Work Experience

  • Todate 2016

    Başhekim

    Girne Üniversitesi, Dr.Suat Günsel Hastanesi

  • 2016 2011

    Sürekli Tıp Eğitimi (STE) Koordinatörü

    YDÜ, Tıp Fakültesi

  • Todate 2011

    Müdür

    YDÜ, Sağlık Hizmetleri Meslek Yüksekokulu

  • Todate 2011

    Anabilim Dalı Başkanı

    YDÜ Tıp Fakültesi, Radyoloji Anabilim Dalı

  • 2011 2010

    Profesör

    Gülhane Askeri Tıp Akademisi, Radyoloji

  • 2010 2002

    Docent

    Gülhane Askeri Tıp Akademisi, Radyoloji

  • 2000 1999

    Research fellow

    US National Institutes of Health Clinical Center , Neuroradiology

  • 2002 1996

    Yardımcı Doçent

    Gülhane Askeri Tıp Fakültesi, Radyoloji

  • 1996 1995

    Uzman

    Erzurum Maraşal Çakmak Hastanesi, Radyoloji

  • 1995 1992

    Uzmanlık Öğrencisi

    Gülhane Askeri Tıp Akademisi, Radyoloji

  • 1992 1990

    Pratisyen Hekim

    Genel Kurmay Başkanlığı Destek Kıta Komutanlığı, Sağlık Kısım Amiri

Education & Training

  • Ph.D. 1995

    Radyoloji

    Gülhane Askeri Tıp Fakültesi

  • Master1989

    Tıp Fakültesi

    Gülhane Askeri Tıp Fakültesi

  • Bachelor...

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Honors, Awards and Grants

  • 2005
    Sözel Bildiri Birincilik Ödülü
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    Bulakbaşı N, Kocaoğlu M, Güvenç İ, Sanal TA, Üçöz T, Somuncu İ. Beyin tümörlerinin ayrımı ve evrelemesinde fosfor 31P manyetik rezonans spektoskopinin etkinliği. 26. Ulusal Radyoloji Kongresi 26-30 Ekim 2005, Antalya. Sözel Bildiri Birincilik Ödülü
  • 2003
    EĞİTİM ÖĞRETİM BAŞARI ROZETİ
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    Genel Kurmay Başkanlığı
  • 2002
    YURT İÇİ ÖĞRENİM BAŞARI ŞERİT ROZETİ
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    Genel Kurmay Başkanlığı
  • 2004
    Dahili Tıp Bilimleri Ödülü
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    GATA Bilimsel Çalışmaları Değerlendirme Kurulunun 2003-2004 yılı "Dahili Tıp Bilimleri" dalında ödülü
  • 2014
    European Diploma in Neuroradiology
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    AB Nöroradyoloji Diploması
  • 2007
    Certificate of Merit
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    Kocaoglu M, Sanal HT, Ilica AT, Bulakbasi N, Tayfun C, Ucoz T. MR urography in children: Technique, Applications and Pitfalls. RSNA 93 rd Scientific assembly and annual Meeting, November 25-30, 2007 Chicago. Certificate of Merit
  • 2016
    European Diploma in Pediatric Neuroradiology
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    AB Pediatrik Nöroradyoloji Diploması
  • 2012
    European Certificate of Neuroradiology
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    AB Nörororadyoloji Sertifikası

Research Projects

  • image

    Evaluation of intracranial mass lesions by diffusion weighted imaging

    We evaluated the efficiency of diffusion weighted imaging and ADC calculation in the differentiation of benign and malignant lesions, in the evaluation cystic lesions and in tumor grading.

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    Comparison of effectiveness of magnetization transfer and diffusion tensor imaging techniques in the evaluation of cerebral lesions in multiple sclerosis

    Superiority of these two techniques to standard contrast enhanced MRI in the early detection and evaluation acute MS plaques was evaluated and magnetization transfer imaging was more useful in detection of acute plaques.

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    Usage of perfusion MRI in the evaluation of brain tumors.

    Efficiency of perfusion MRI in the differential diagnosis of low and high grade glial tumors and cerebral metastasis.

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Embolization of posttraumatic and postsurgical lower gastrointestinal bleeding

Book Chapter Springer & Verlag, Volume 1, Issue -, 2004, Pages 617-634

Abstract

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Özet

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Metastatic Solitary Malignant Brain Tumor: Magnetic Resonance Imaging

Book Chapter Methods of Cancer Diagnosis, Therapy, and Prognosis, Volume *, Issue -, 2011, Pages -

Abstract

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Özet

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Sağlıkta Kalite Standartları. Ağız Diş Sağlığı Hizmetleri

Book Chapter Anıl Reklam Matbaa Ltd.Şti., Volume ., Issue ., 2017, Pages .

Abstract

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Özet

TRUS, CT and MRI findings of hydatid disease of seminal vesicles

Case Report Eur Radiol, Volume 8, Issue 6, 1998, Pages 933-935

Abstract

Hydatid disease of the urogenital system, especially seminal vesicles and prostate, or retroperitoneum is a very rare condition. Secondary dissemination of seminal vesicles has not been described before. We describe the transrectal ultrasonography (TRUS), CT and MRI findings of a secondary solitary hydatid cyst of the left seminal vesicle, in a patient with disseminated hydatid disease involving all abdominal organs except for right kidney. We obtained typical findings of hydatid cyst at all modalities.


Özet

Hydatid disease of the urogenital system, especially seminal vesicles and prostate, or retroperitoneum is a very rare condition. Secondary dissemination of seminal vesicles has not been described before. We describe the transrectal ultrasonography (TRUS), CT and MRI findings of a secondary solitary hydatid cyst of the left seminal vesicle, in a patient with disseminated hydatid disease involving all abdominal organs except for right kidney. We obtained typical findings of hydatid cyst at all modalities.

Percutaneous treatment of hepatic hydatid cyst in pregnancy.

Case Report Arch Gynecol Obstet , Volume 262, Issue 3-4, 1999, Pages 181-184

Abstract

A 20 cm hepatic hydatid cyst with daughter cysts, was diagnosed in a primigravida in the fifteenth week of pregnancy and was managed percutaneously. No complications occurred and the patient subsequently gave birth to a healthy baby.


Özet

A 20 cm hepatic hydatid cyst with daughter cysts, was diagnosed in a primigravida in the fifteenth week of pregnancy and was managed percutaneously. No complications occurred and the patient subsequently gave birth to a healthy baby.

MRI in Joubert Syndrome

Case Report TURKISH JOURNAL OF MEDICAL SCIENCES, Volume *, Issue -, 2000, Pages -

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The value of ultrasonography in interrupted inferior vena cava with azygos continuation

Case Report Eur J Ultrasound , Volume 14, Issue 2-3, 2001, Pages 179-182

Abstract

The cardiosplenic syndromes represent a complex set of abnormalities of the thorax and viscera resulting from abnormal folding of the embryo during early development. Anomalies of venous development include interruption of inferior vena cava (IVC), and in combination with situs inversus referred to as the polysplenia syndrome. We present a 23-year-old male previously diagnosed as having a persistent left IVC on venography whereas ultrasonographic examination clearly demonstrated interrupted IVC with azygos continuation along with situs inversus.


Özet

The cardiosplenic syndromes represent a complex set of abnormalities of the thorax and viscera resulting from abnormal folding of the embryo during early development. Anomalies of venous development include interruption of inferior vena cava (IVC), and in combination with situs inversus referred to as the polysplenia syndrome. We present a 23-year-old male previously diagnosed as having a persistent left IVC on venography whereas ultrasonographic examination clearly demonstrated interrupted IVC with azygos continuation along with situs inversus.

True aneurysm formation in axillofemoral bypass with a reinforced ePTFE graft.

Case Report Vasc Endovascular Surg, Volume 36, Issue 4, 2002, Pages 327-329

Abstract

Since improvement in reinforced expanded polytetrafluoroethylene (ePTFE) grafts, true aneurysm and pseudoaneurysm formation have become relatively rare complications after axillofemoral reconstruction. This is a case report of a true aneurysm of an axillofemoral graft. The true aneurysm occurred 29 months after insertion of a reinforced ePTFE graft for aortoiliac occlusive disease. A mid-graft true aneurysm was identified during examinations without any trauma history. Continuous long-term follow-up is recommended for these reinforced ePTFE grafts because of rare aneurysm formation, preferably using duplex ultrasonography.


Özet

Since improvement in reinforced expanded polytetrafluoroethylene (ePTFE) grafts, true aneurysm and pseudoaneurysm formation have become relatively rare complications after axillofemoral reconstruction. This is a case report of a true aneurysm of an axillofemoral graft. The true aneurysm occurred 29 months after insertion of a reinforced ePTFE graft for aortoiliac occlusive disease. A mid-graft true aneurysm was identified during examinations without any trauma history. Continuous long-term follow-up is recommended for these reinforced ePTFE grafts because of rare aneurysm formation, preferably using duplex ultrasonography.

Walker Warburg syndrome variant.

Case Report Comput Med Imaging Graph, Volume 26, Issue 6, 2002, Pages 453-458

Abstract

A Turkish patient with cobblestone lissencephaly and eye involvement without characteristic muscular changes for congenital muscular dystrophy died at the age of 3 months presented with neonatal apneic periods and generalized seizures. Serum creatine kinase level, electromyography, chromosome analysis and blood biochemistry were normal. Unilateral microphthalmia, retinal dysplasia and internal strabismus were the ocular findings. Magnetic resonance imaging clearly demonstrated the thickened, irregular, nearly agyric cobblestone cerebral cortex with underlying unmyelinated white matter, hydrocephalus, hypoplastic corpus callosum, brain stem and cerebellum with retrocerebellar cyst and posterior cephalocele.


Özet

A Turkish patient with cobblestone lissencephaly and eye involvement without characteristic muscular changes for congenital muscular dystrophy died at the age of 3 months presented with neonatal apneic periods and generalized seizures. Serum creatine kinase level, electromyography, chromosome analysis and blood biochemistry were normal. Unilateral microphthalmia, retinal dysplasia and internal strabismus were the ocular findings. Magnetic resonance imaging clearly demonstrated the thickened, irregular, nearly agyric cobblestone cerebral cortex with underlying unmyelinated white matter, hydrocephalus, hypoplastic corpus callosum, brain stem and cerebellum with retrocerebellar cyst and posterior cephalocele.

Value of magnetic resonance imaging in the depiction of intravenous leiomyomatosis extending to the heart

Case Report Neuroradiology, Volume *, Issue -, 2003, Pages -

Abstract

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Özet

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Schwannoma of the lateral ventricle: eight-year follow-up and literature review.

Case Report Minimally invasive neurosurgery: MIN, Volume *, Issue -, 2003, Pages -

Abstract

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Özet

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Erratum to “Walker–Warburg syndrome variant”[Computerised Medical Imaging and Graphics 26 (2002) 453–458]

Case Report Computerized Medical Imaging and Graphics, Volume *, Issue -, 2003, Pages -

Abstract

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Özet

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Multiple myeloma of the breast: Mammographic, ultrasonographic and magnetic resonance imaging features

Case Report Eur J Radiol Extra , Volume 47, Issue 3, 2003, Pages 112-116

Abstract

Although the incidence of extramedullary plasmacytoma of the breast is quite unusual, the exact recognition of this clinical problem is important in order to prevent unnecessary surgery. We present mammographic, sonographic and magnetic resonance imaging (MRI) characteristics of myeloma infiltration of the breast in a patient who had been treated for skeletal multiple myeloma.


Özet

Although the incidence of extramedullary plasmacytoma of the breast is quite unusual, the exact recognition of this clinical problem is important in order to prevent unnecessary surgery. We present mammographic, sonographic and magnetic resonance imaging (MRI) characteristics of myeloma infiltration of the breast in a patient who had been treated for skeletal multiple myeloma.

Intravenous immunoglobulin therapy in acute disseminated encephalomyelitis associated with hepatitis A infection

Case Report Pediatr Int, Volume 46, Issue 2, 2004, Pages 171-173

Abstract

Intravenous immunoglobulin therapy in acute disseminated encephalomyelitis associated with hepatitis A infection.


Özet

Intravenous immunoglobulin therapy in acute disseminated encephalomyelitis associated with hepatitis A infection.

Imaging findings in idiopathic granulomatous mastitis; A review with emphasis on magnetic resonance imaging

Case Report J Comput Assist Tomogr , Volume 28, Issue 5, 2004, Pages 635-641

Abstract

OBJECTIVE: To describe magnetic resonance (MR) imaging features of patients with a histologic diagnosis of idiopathic granulomatous mastitis (IGM). METHODS: Dynamic contrast-enhanced MR imaging was performed with a 1.5-T MR unit. Postprocessing of images included subtraction and calculation of time-intensity curves of the enhancing regions at several points in all patients. RESULTS: In addition to granulomatous inflammation, biopsy slides of 5 patients demonstrated abscess formation without a specific organism (aseptic abscess). One patient had a fibrotic tissue component. Magnetic resonance imaging findings were heterogeneously enhancing areas with (n = 5) and without (n = 1) multiple ring-like enhanced abscesses and a circumscribed lesion with heterogeneous contrast enhancement (n = 1). Time-intensity curves showed a benign pattern in all but 1 patient. CONCLUSION: Idiopathic granulomatous mastitis has a number of appearances on MR imaging. Magnetic resonance imaging with measurement of time-signal intensity curves may support the findings of ultrasonography and mammography in distinguishing benign inflammatory breast disorders from malignant ones; however, biopsy still remains the only method of definite diagnosis.


Özet

OBJECTIVE: To describe magnetic resonance (MR) imaging features of patients with a histologic diagnosis of idiopathic granulomatous mastitis (IGM). METHODS: Dynamic contrast-enhanced MR imaging was performed with a 1.5-T MR unit. Postprocessing of images included subtraction and calculation of time-intensity curves of the enhancing regions at several points in all patients. RESULTS: In addition to granulomatous inflammation, biopsy slides of 5 patients demonstrated abscess formation without a specific organism (aseptic abscess). One patient had a fibrotic tissue component. Magnetic resonance imaging findings were heterogeneously enhancing areas with (n = 5) and without (n = 1) multiple ring-like enhanced abscesses and a circumscribed lesion with heterogeneous contrast enhancement (n = 1). Time-intensity curves showed a benign pattern in all but 1 patient. CONCLUSION: Idiopathic granulomatous mastitis has a number of appearances on MR imaging. Magnetic resonance imaging with measurement of time-signal intensity curves may support the findings of ultrasonography and mammography in distinguishing benign inflammatory breast disorders from malignant ones; however, biopsy still remains the only method of definite diagnosis.

MRI features of lissencephaly with cerebellar hypoplasia

Case Report Comput Med Imaging Graph Extra , Volume 28, Issue 1, 2004, Pages 4-7

Abstract

Lissencephaly with cerebellar hypoplasia has been recently reported as different group of lissencephaly, which is not included in either classical or cobblestone types. We described magnetic resonance imaging findings of a 8-year-old boy with lissencephaly with cerebellar hypoplasia, to distinguish it from other forms of lissencephaly.


Özet

Lissencephaly with cerebellar hypoplasia has been recently reported as different group of lissencephaly, which is not included in either classical or cobblestone types. We described magnetic resonance imaging findings of a 8-year-old boy with lissencephaly with cerebellar hypoplasia, to distinguish it from other forms of lissencephaly.

Clinical, MR imaging and MR spectroscopy findings in Cohen syndrome. A case report.

Case Report Riv Neuroradiol , Volume 18, Issue 1, 2005, Pages 82-86

Abstract

We describe a 20-year-old, non-Finnish man with Cohen syndrome (MIM: 216550). Besides the essential clinical and MR imaging findings including non-progressive psychomotor retardation, motor clumsiness, microcephaly, typical facial features, retinochoroidal dystrophy, myopia and thick corpus callosum, he also had infertility, pituitary hyperplasia and low-lying tentorium. No diffusion changes were recorded. MR spectroscopy (40 and 270 ms TE) revealed normal spectra.


Özet

We describe a 20-year-old, non-Finnish man with Cohen syndrome (MIM: 216550). Besides the essential clinical and MR imaging findings including non-progressive psychomotor retardation, motor clumsiness, microcephaly, typical facial features, retinochoroidal dystrophy, myopia and thick corpus callosum, he also had infertility, pituitary hyperplasia and low-lying tentorium. No diffusion changes were recorded. MR spectroscopy (40 and 270 ms TE) revealed normal spectra.

Lhermitte–Duclos disease (dysplastic cerebellar gangliocytoma): Magnetic resonance and diffusion imaging findings

Case Report European Journal of Radiology Extra , Volume 55, Issue 1, 2005, Pages 11-14

Abstract

Lhermitte–Duclos disease (LDD) is a tumor-like but non-neoplastic developmental abnormality of the cerebellar cortex caused primarily by massive enlargement of the neurons in the internal granular cell layer. The exact pathogenesis, genetic alterations and the radiologic findings have not been fully understood since it is a rare disease. We would like to present magnetic resonance and diffusion imaging findings of a patient with histopathologically confirmed LDD who has increased signal on apparent diffusion coefficient (ADC) maps.


Özet

Lhermitte–Duclos disease (LDD) is a tumor-like but non-neoplastic developmental abnormality of the cerebellar cortex caused primarily by massive enlargement of the neurons in the internal granular cell layer. The exact pathogenesis, genetic alterations and the radiologic findings have not been fully understood since it is a rare disease. We would like to present magnetic resonance and diffusion imaging findings of a patient with histopathologically confirmed LDD who has increased signal on apparent diffusion coefficient (ADC) maps.

Univentricular heart and supramitral ring: an unusual association.

Case Report Int J Cardiovasc Imaging, Volume 21, Issue 6, 2005, Pages 645-647

Abstract

Univentricular heart, which is rarely seen cardiac anomaly, is associated with various cardiac anomalies. The presence of supramitral ring and univentricular heart in the same patient is very interesting association which, to the best of our knowledge, was not reported previously.


Özet

Univentricular heart, which is rarely seen cardiac anomaly, is associated with various cardiac anomalies. The presence of supramitral ring and univentricular heart in the same patient is very interesting association which, to the best of our knowledge, was not reported previously.

Magnetic resonance imaging characteristics of a gliosarcoma. A case report

Case Report Riv Neuroradiol , Volume 18, Issue 1, 2005, Pages 59-63

Abstract

In this case report, we define THE MR characteristics of a gliosarcoma surgically removed from the left cerebral hemisphere of a 67-year-old man who presented with right hemiparesis and headache. The tumor was located in the gray-white matter interface abutting the dural surface. It showed slightly high signal on T2-weighted images with hemorrhagic and necrotic components and irregular ring-like enhancement on post-contrast T1-weighted images. Apparent diffusion coefficient of the tumor was measured as 1.09 × 10-3 cm2/s. Tumoral and peritumoral cerebral blood volume (rCBV) ratios were calculated as 8.4 and 2.2, and choline/creatine ratios were 1.78 and 1.11 respectively. The tumor primarily compromised the secondary motor area and affected the left primary motor area on BOLD images. Although MR characteristics of gliosarcoma did not allow an exact differential diagnosis, they were very useful in surgical planning to decrease post-treatment morbidity.


Özet

In this case report, we define THE MR characteristics of a gliosarcoma surgically removed from the left cerebral hemisphere of a 67-year-old man who presented with right hemiparesis and headache. The tumor was located in the gray-white matter interface abutting the dural surface. It showed slightly high signal on T2-weighted images with hemorrhagic and necrotic components and irregular ring-like enhancement on post-contrast T1-weighted images. Apparent diffusion coefficient of the tumor was measured as 1.09 × 10-3 cm2/s. Tumoral and peritumoral cerebral blood volume (rCBV) ratios were calculated as 8.4 and 2.2, and choline/creatine ratios were 1.78 and 1.11 respectively. The tumor primarily compromised the secondary motor area and affected the left primary motor area on BOLD images. Although MR characteristics of gliosarcoma did not allow an exact differential diagnosis, they were very useful in surgical planning to decrease post-treatment morbidity.

MR cholangiopancreatography of a case with a biliary tract variation and postoperative biliary duct injury

Case Report Diagn Interv Radiol , Volume 11, Issue 4, 2005, Pages 219-221

Abstract

Because of the increasing frequency of surgical pro- cedures such as hepatic resection, partial liver trans- plantation, and laparoscopic cholecystectomy, the number of patients requiring biliary imaging has increased. In this report, magnetic resonance cholan- giopancreatography findings of a case with an ab- errant right posterior hepatic duct draining directly into the gallbladder, which was overlooked prior to laparoscopic cholecystectomy, is presented and the importance of magnetic resonance cholangiopan- creatography in the evaluation of congenital biliary anomalies and iatrogenic bile duct injury is discussed.


Özet

Because of the increasing frequency of surgical pro- cedures such as hepatic resection, partial liver trans- plantation, and laparoscopic cholecystectomy, the number of patients requiring biliary imaging has increased. In this report, magnetic resonance cholan- giopancreatography findings of a case with an ab- errant right posterior hepatic duct draining directly into the gallbladder, which was overlooked prior to laparoscopic cholecystectomy, is presented and the importance of magnetic resonance cholangiopan- creatography in the evaluation of congenital biliary anomalies and iatrogenic bile duct injury is discussed.

Duodenal intramural hematoma due to blunt abdominal trauma.

Case Report Ulus Travma Acil Cerrahi Derg , Volume 11, Issue 2, 2005, Pages 165-168

Abstract

A 14-year-old boy was admitted to the hospital with the complaints of epigastric pain and vomiting for three days following epigastric trauma. Physical examination revealed a palpable mass in the epigastrium without any signs of peritoneal irritation. Vital signs, biochemical analysis, chest and abdominal x-rays were normal. Abdominal US, CT and upper gastrointestinal endoscopy showed that there was a well-defined duodenal intramural mass suggesting hematoma. Intraabdominal solid organs were normal and we did not observe free air or extravasation of contrast media. Therefore, we followed up the patient by US. The hematoma completely resolved 48 days after the trauma.


Özet

A 14-year-old boy was admitted to the hospital with the complaints of epigastric pain and vomiting for three days following epigastric trauma. Physical examination revealed a palpable mass in the epigastrium without any signs of peritoneal irritation. Vital signs, biochemical analysis, chest and abdominal x-rays were normal. Abdominal US, CT and upper gastrointestinal endoscopy showed that there was a well-defined duodenal intramural mass suggesting hematoma. Intraabdominal solid organs were normal and we did not observe free air or extravasation of contrast media. Therefore, we followed up the patient by US. The hematoma completely resolved 48 days after the trauma.

MRI findings of renal lymphangiectasia

Case Report J Magn Reson Imaging , Volume 22, Issue 5, 2005, Pages 681-683

Abstract

We present the case of a 20-year-old male with renal lymphangiectasia who presented with hypertension and hematuria. We discuss the role of magnetic resonance imaging (MRI) with gadolinium-enhanced MR urography in confirming the diagnosis, extensions of this rare benign entity, and associated conditions.


Özet

We present the case of a 20-year-old male with renal lymphangiectasia who presented with hypertension and hematuria. We discuss the role of magnetic resonance imaging (MRI) with gadolinium-enhanced MR urography in confirming the diagnosis, extensions of this rare benign entity, and associated conditions.

Cranial nerve lymphomatosis

Case Report Neurology India, Volume *, Issue -, 2006, Pages -

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Özet

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An unusual form of double outlet right ventricle

Case Report Anadolu Kardiyol Derg , Volume 6, 2006, Pages 403-404

Abstract


Özet

Detection of widespread neurolymphomatosis with (18)F-FDG PET.

Case Report Eur J Nucl Med Mol Imaging , Volume 33, Issue 8, 2006, Pages 975-976

Abstract

The article reports on the detection of widespread neurolymphomatosis with 18F-FDG PET. It presents a brain MRI taken from a 21-year-old male patient with diffuse large B-cell lymphoma which revealed lymphomatous infiltration in bilateral cavernous sinuses and fifth cranial nerves. The interpretation of the findings are presented.


Özet

The article reports on the detection of widespread neurolymphomatosis with 18F-FDG PET. It presents a brain MRI taken from a 21-year-old male patient with diffuse large B-cell lymphoma which revealed lymphomatous infiltration in bilateral cavernous sinuses and fifth cranial nerves. The interpretation of the findings are presented.

A rare cause of flank mass: Psoas abscess due to extensive primary thoracolumbar tuberculous spondylodiskitis

Case Report AJNR Am J Neuroradiol , Volume 27, Issue 8, 2006, Pages 1735-1737

Abstract

Psoas abscess secondary to tuberculous spondylodiskitis is usually a complication of thoracolumbar vertebrae disease. The psoas abscess may be difficult clinically to diagnose because of its rarity, insidious onset of the disease, and nonspecific clinical presentation. We report multidetector CT and MR imaging findings of a psoas abscess secondary to primary tuberculous spondylodiskitis of the spine from the T3 to L2 vertebrae, which presented as a flank mass.


Özet

Psoas abscess secondary to tuberculous spondylodiskitis is usually a complication of thoracolumbar vertebrae disease. The psoas abscess may be difficult clinically to diagnose because of its rarity, insidious onset of the disease, and nonspecific clinical presentation. We report multidetector CT and MR imaging findings of a psoas abscess secondary to primary tuberculous spondylodiskitis of the spine from the T3 to L2 vertebrae, which presented as a flank mass.

An unusual complication of the use of stapler after Hartmann's procedure

Case Report West Afr J Med , Volume 25, Issue 4, 2006, Pages 289-291

Abstract

Circular anastomotic staplers have been used in colorectal surgery for several years with low complication rates. We report here an extremely rare case of direct colovaginal anastomosis and rectovaginal fistula occurred by using a 31 end-to-end anastomosis stapler after reversal of Hartmann's Procedure. A 33-year-old woman with complaint of rectal bleeding had undergone low anterior resection and end colostomy for rectal adenocarcinoma in 1995. In spite of making recommendation for colostomy closure, she had postponed the operation until 2003 due to afraid of incontinence. After reversal of Hartmann's procedure achieved by using circular stapler and diverting ileostomy, she developed complaints of vaginal gas and minimal vaginal fecal discharge. Endoscopic examination and imaging methods revealed a rectovaginal fistula with a blind Hartmann's pouch. After a certain verification of complexity of the case, a reoperation which comprises true intestinal anastomosis and repair of fistula was performed. Postoperative period was uneventful except an incisional infection, and ileostomy was closed subsequently. A rectovaginal fistula, though encountered rarely, must be taken into account in cases with suspicious complaints after using circular stapler for pelvic intestinal anastomosis. Careful placement of stapler in accurate direction has a great importance to avoid stapling related complications.


Özet

Circular anastomotic staplers have been used in colorectal surgery for several years with low complication rates. We report here an extremely rare case of direct colovaginal anastomosis and rectovaginal fistula occurred by using a 31 end-to-end anastomosis stapler after reversal of Hartmann's Procedure. A 33-year-old woman with complaint of rectal bleeding had undergone low anterior resection and end colostomy for rectal adenocarcinoma in 1995. In spite of making recommendation for colostomy closure, she had postponed the operation until 2003 due to afraid of incontinence. After reversal of Hartmann's procedure achieved by using circular stapler and diverting ileostomy, she developed complaints of vaginal gas and minimal vaginal fecal discharge. Endoscopic examination and imaging methods revealed a rectovaginal fistula with a blind Hartmann's pouch. After a certain verification of complexity of the case, a reoperation which comprises true intestinal anastomosis and repair of fistula was performed. Postoperative period was uneventful except an incisional infection, and ileostomy was closed subsequently. A rectovaginal fistula, though encountered rarely, must be taken into account in cases with suspicious complaints after using circular stapler for pelvic intestinal anastomosis. Careful placement of stapler in accurate direction has a great importance to avoid stapling related complications.

Left ventricular mass

Case Report Anadolu Kardiyol Derg , Volume 6, 2006, Pages 407

Abstract


Özet

Symptomatic epidural gas after open discectomy: CT and MR imaging findings.

Case Report AJNR Am J Neuroradiol, Volume 27, Issue 5, 2006, Pages 998-999

Abstract

We report a case of symptomatic epidural gas accumulation after open diskectomy, causing lumbar radiculopathy. Surgery had been performed in a 44-year-old man for disk extrusion; however, he was readmitted to the hospital with increased lower back pain 5 months after the operation. CT and MR studies demonstrated accumulation of gas in the lumbar epidural space compressing the dural sac and nerve root. Symptoms disappeared after surgical removal of the gas.


Özet

We report a case of symptomatic epidural gas accumulation after open diskectomy, causing lumbar radiculopathy. Surgery had been performed in a 44-year-old man for disk extrusion; however, he was readmitted to the hospital with increased lower back pain 5 months after the operation. CT and MR studies demonstrated accumulation of gas in the lumbar epidural space compressing the dural sac and nerve root. Symptoms disappeared after surgical removal of the gas.

Behçet’s disease presenting with acute transverse myelitis: MRI findings and review of the nosology

Case Report Neuroradiol J , Volume 20, Issue 2, 2007, Pages 233-236

Abstract

Spinal cord involvement, either isolated or together with brain, in Behçet's disease (BD) has been reported. In these cases the existence of the disease was previously known or the classical triad of disease such as oral and genital ulcers with uveitis/iritis was present. Here we describe a 22-year-old man in whom acute transverse myelitis diagnosed with MRI was the first finding of BD


Özet

Spinal cord involvement, either isolated or together with brain, in Behçet's disease (BD) has been reported. In these cases the existence of the disease was previously known or the classical triad of disease such as oral and genital ulcers with uveitis/iritis was present. Here we describe a 22-year-old man in whom acute transverse myelitis diagnosed with MRI was the first finding of BD

Epilepsy surgery in children and adolescents: Gulhane military medical school epilepsy surgery groups experience

Case Report EPILEPSIA, Volume *, Issue -, 2007, Pages -

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Özet

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Psoas muscle lipoma: CT and MRI findings

Case Report JBR-BTR , Volume 90, Issue 6, 2007, Pages 540

Abstract


Özet

Pelvic hydatid disease: CT and MRI findings of an unusual cause of sciatica.

Case Report Korean J Radiol , Volume 8, Issue 6, 2007, Pages 548-551

Abstract

Pelvic masses, especially hydatid disease, rarely present with sciatica (1, 2). We present the computed tomography (CT) and the magnetic resonance imaging (MRI) findings of a 49-year-old female patient with presacral hydatid disease, who was evaluated for her sciatica. We also want to emphasize the importance of assessing the pelvis of patients with symptoms and clinical findings that are inconsistent and that cannot be satisfactorily explained by the spinal imaging findings.


Özet

Pelvic masses, especially hydatid disease, rarely present with sciatica (1, 2). We present the computed tomography (CT) and the magnetic resonance imaging (MRI) findings of a 49-year-old female patient with presacral hydatid disease, who was evaluated for her sciatica. We also want to emphasize the importance of assessing the pelvis of patients with symptoms and clinical findings that are inconsistent and that cannot be satisfactorily explained by the spinal imaging findings.

Craniospinal involvement in a patient with isolated bone marrow mastocytosis.

Case Report Neuroradiol J , Volume 20, Issue 3, 2007, Pages A1. 359-363

Abstract

Central nervous system involvement in systemic mastocytosis (SM) is very rare. This case report describes the computed tomography and magnetic resonance (MR) imaging findings of central nervous system involvement in a patient with isolated bone marrow mastocystosis. Bone marrow infiltration in SM caused cranial nerve dysfunction and meningeal irritation secondary to narrowing of cranial apertures and meningeal involvement, respectively. MR imaging is the modality of choice in both detection and follow-up of SM and also useful for differential diagnosis and detection of complications.


Özet

Central nervous system involvement in systemic mastocytosis (SM) is very rare. This case report describes the computed tomography and magnetic resonance (MR) imaging findings of central nervous system involvement in a patient with isolated bone marrow mastocystosis. Bone marrow infiltration in SM caused cranial nerve dysfunction and meningeal irritation secondary to narrowing of cranial apertures and meningeal involvement, respectively. MR imaging is the modality of choice in both detection and follow-up of SM and also useful for differential diagnosis and detection of complications.

Mirizzi syndrome in an icteric patient : MRI and MRCP findings

Case Report JBR-BTR , Volume 90, Issue 6, 2007, Pages 545

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Özet

Yenidoğan kız çocukta vulval kitle şeklinde izlenen prolabe ektopik üreterosel

Case Report Diagn Interv Radiol, Volume *, Issue -, 2008, Pages -

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Özet

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Prolapsing ectopic ureterocele presenting as a vulval mass in a newborn girl

Case Report Diagn Interv Radiol, Volume *, Issue -, 2008, Pages -

Abstract

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Özet

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Symptomatic epidural gas accumulation originating from vacuum phenomenon in the intervertebral disc: CT imaging findings

Case Report The Internet Journal of Radiology, Volume 10, Issue 1, 2008, Pages 1-4

Abstract

Gas production as a part of disc degeneration can occur but rarely causes nerve compression syndromes. We report a case of symptomatic epidural free gas accumulation originating from vacuum phenomenon in the intervertebral disc, causing lumbo-sacral radiculopathy. A 74-year-old woman suffered from sciatica for 6 months. The condition worsened in recent days, and a slight motor deficiency of the right S1 had developed. CT images demonstrated intradiscal vacuum phenomenon with degenerative disc disease, and accumulation of gas in the lumbar epidural space compressing the dural sac and nerve root. The patient treated conservatively and symptoms gradually resolved within 15 days.


Özet

Gas production as a part of disc degeneration can occur but rarely causes nerve compression syndromes. We report a case of symptomatic epidural free gas accumulation originating from vacuum phenomenon in the intervertebral disc, causing lumbo-sacral radiculopathy. A 74-year-old woman suffered from sciatica for 6 months. The condition worsened in recent days, and a slight motor deficiency of the right S1 had developed. CT images demonstrated intradiscal vacuum phenomenon with degenerative disc disease, and accumulation of gas in the lumbar epidural space compressing the dural sac and nerve root. The patient treated conservatively and symptoms gradually resolved within 15 days.

Giant infantile gliosarcoma: Magnetic resonance imaging findings

Case Report J Child Neurol, Volume 23, Issue 8, 2008, Pages 926-929

Abstract

Gliosarcoma is an uncommon variant of glioblastoma multi- forme, which is composed of gliomatous and sarcomatous elements. The tumor is rarely encountered in childhood. This case report presents the magnetic resonance imaging characteristics of a giant gliosarcoma in a 3-year-old girl. Size and location of the tumor are described.


Özet

Gliosarcoma is an uncommon variant of glioblastoma multi- forme, which is composed of gliomatous and sarcomatous elements. The tumor is rarely encountered in childhood. This case report presents the magnetic resonance imaging characteristics of a giant gliosarcoma in a 3-year-old girl. Size and location of the tumor are described.

Prolapsing ectopic ureterocele presenting as a vulval mass in a newborn girl

Case Report Diagn Interv Radiol, Volume 14, Issue 1, 2008, Pages 33-34

Abstract

Prolapse of the ureterocele and its presentation as a vulval mass is an extremely rare condition. There are no detailed imaging findings of such cases in the lit- erature. We present voiding cystourethrography and MRI findings of a newborn girl with a ureterocele ex- tending through the urethra.


Özet

Prolapse of the ureterocele and its presentation as a vulval mass is an extremely rare condition. There are no detailed imaging findings of such cases in the lit- erature. We present voiding cystourethrography and MRI findings of a newborn girl with a ureterocele ex- tending through the urethra.

Case report. Isolated complete congenital sternal cleft in an adult: MDCT imaging findings.

Case Report Br J Radiol. , Volume 82, Issue 982, 2009, Pages e202-203

Abstract

Sternal cleft is a very rare midline defect. Incomplete forms are more common than complete ones. In this challenging anomaly, the underlying mediastinal structures (especially the heart and great vessels) can easily be injured by external trauma. In addition, the deformity is cosmetically unpleasant and quite alarming to the young patient and the patient’s family. In this report, we describe the multidetector CT (MDCT) images that demonstrate the complete sternal cleft.


Özet

Sternal cleft is a very rare midline defect. Incomplete forms are more common than complete ones. In this challenging anomaly, the underlying mediastinal structures (especially the heart and great vessels) can easily be injured by external trauma. In addition, the deformity is cosmetically unpleasant and quite alarming to the young patient and the patient’s family. In this report, we describe the multidetector CT (MDCT) images that demonstrate the complete sternal cleft.

Atypical mycobacterial tenosynovitis and bursitis of the wirst.

Case Report Diagn Interv Radiol, Volume 15, Issue 4, 2009, Pages 266-268

Abstract

Atypical mycobacterial tenosynovitis of the wrist can easily be misdiagnosed as synovial chondromatosis. Both sonography and magnetic resonance imaging plays an important role in depicting “rice bodies” within the distended tendon sheaths and bursae of atypical mycobacterial infection. An endemic place for Mycobacterium species and the occupation of the patient should raise the suspicion for the disease. Polymerase chain reaction of the distended tendon fluid is a sensitive, spe- cific and rapid method in identification of the mycobacteria.


Özet

Atypical mycobacterial tenosynovitis of the wrist can easily be misdiagnosed as synovial chondromatosis. Both sonography and magnetic resonance imaging plays an important role in depicting “rice bodies” within the distended tendon sheaths and bursae of atypical mycobacterial infection. An endemic place for Mycobacterium species and the occupation of the patient should raise the suspicion for the disease. Polymerase chain reaction of the distended tendon fluid is a sensitive, spe- cific and rapid method in identification of the mycobacteria.

Double chambered left ventricle with non-sustained ventricular tachycardia

Case Report Anadolu Kardiyol Derg, Volume 9, Issue 3, 2009, Pages E5

Abstract


Özet

Multifocal peliosis hepatis: MR and diffusion-weighted MR-imaging findings of an atypical case

Case Report Ups J Med Sci. , Volume 115, Issue 2, 2010, Pages 153-156

Abstract

Peliosis is a rare benign disorder that is characterized by the presence of diffuse blood-filled cystic spaces and can occur in the liver, spleen, bone-marrow, and lungs. We present a 10-year-old boy with Fanconi anemia who presented with peliosis hepatis due to androgen treatment. Magnetic resonance (MR) imaging revealed multiple non-enhancing masses. Some of the lesions revealed fluid-fluid levels and extrahepatic extension on MR images. Diffusion-weighted (DW) imaging showed restricted diffusion. Fluid-fluid levels and extrahepatic extensions are unusual findings for hepatic peliotic lesions. In addition, DW imaging findings of peliosis hepatis have not been reported previously.


Özet

Peliosis is a rare benign disorder that is characterized by the presence of diffuse blood-filled cystic spaces and can occur in the liver, spleen, bone-marrow, and lungs. We present a 10-year-old boy with Fanconi anemia who presented with peliosis hepatis due to androgen treatment. Magnetic resonance (MR) imaging revealed multiple non-enhancing masses. Some of the lesions revealed fluid-fluid levels and extrahepatic extension on MR images. Diffusion-weighted (DW) imaging showed restricted diffusion. Fluid-fluid levels and extrahepatic extensions are unusual findings for hepatic peliotic lesions. In addition, DW imaging findings of peliosis hepatis have not been reported previously.

Avulsion fracture and myositis ossificans in a professional teenage dancer: a case report.

Case Report Med Probl Perform Art, Volume 30, Issue 2, 2015, Pages 111-114

Abstract

Fractures of the transverse processes in the lumbar vertebrae occur as the result of major forces such as direct blunt trauma, violent lateral flexion-extension forces, avulsion of the psoas muscle, or Malgaigne fractures of the pelvis. Dancers make repeated and forceful hyperextension and flexions of the spine, which may cause fractures of the transverse processes of the lumbar vertebrae. Repeated trauma of muscles in dancers may cause avulsion fractures and myositis ossificans. Herein, we report MRI and CT findings of an avulsion from the right transverse process of the L2 and L3 vertebrae in a 16-year-old professional teenage dancer, who responded to conservative treatment.


Özet

Fractures of the transverse processes in the lumbar vertebrae occur as the result of major forces such as direct blunt trauma, violent lateral flexion-extension forces, avulsion of the psoas muscle, or Malgaigne fractures of the pelvis. Dancers make repeated and forceful hyperextension and flexions of the spine, which may cause fractures of the transverse processes of the lumbar vertebrae. Repeated trauma of muscles in dancers may cause avulsion fractures and myositis ossificans. Herein, we report MRI and CT findings of an avulsion from the right transverse process of the L2 and L3 vertebrae in a 16-year-old professional teenage dancer, who responded to conservative treatment.

Endovascular treatment of a case presented as isolated superior mesenteric artery dissection

Case Report Saudi Med J, Volume 37, Issue 9, 2016, Pages 1033-1035

Abstract

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Özet

Cranial nerve lymphomatosis Magnetic Resonance Imaging findings in a case of mantle cell lymphoma

Case Report Iranian Journal of Medical Sciences , Volume 42, Issue 5, 2017, Pages 512-513

Abstract

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Özet

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A variation of colon cut off sign in acute pancreatitis and its mechanism: Double cut-off sign

Case Report International Journal of Diagnostic Imaging, Volume 5, Issue 1, 2017, Pages 1

Abstract

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Özet

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http://journals.lww.com/nuclearmed/Abstract/2001/08000/Comparison_of_In_111_Octreotide_and_Tc_99m__V_.4.aspx

General Publication Comparison of In-111 octreotide and Tc-99m (V) DMSA scintigraphy in the detection of medullary thyroid tumor foci in patients with elevated levels of tumor markers after surgery, 2016

Abstract


Özet

http://www.ajnr.org/content/27/9/1983.short

General Publication Transient splenial lesion of the corpus callosum in clinically mild influenza-associated encephalitis/encephalopathy, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S1052514907001220

General Publication Central nervous system infections of herpesvirus family, 2016

Abstract


Özet

http://www.ajnr.org/content/24/2/225.short

General Publication Combination of single-voxel proton MR spectroscopy and apparent diffusion coefficient calculation in the evaluation of common brain tumors, 2016

Abstract


Özet

http://www.tandfonline.com/doi/abs/10.1080/02841850600803834

General Publication Thin-section axial multidetector computed tomography and multiplanar reformatted imaging of children with suspected foreign-body aspiration: is virtual bronchoscopy overemphasized?, 2016

Abstract


Özet

http://www.ajnr.org/content/26/9/2187.short

General Publication Assessment of diagnostic accuracy of perfusion MR imaging in primary and metastatic solitary malignant brain tumors, 2016

Abstract


Özet

http://www.birpublications.org/doi/full/10.1259/bjr/66206791

General Publication Cerebrospinal fluid flow imaging by using phase-contrast MR technique, 2016

Abstract


Özet

http://journals.lww.com/jcat/Abstract/2004/11000/The_Added_Value_of_the_Apparent_Diffusion.3.aspx

General Publication The added value of the apparent diffusion coefficient calculation to magnetic resonance imaging in the differentiation and grading of malignant brain tumors, 2016

Abstract


Özet

http://journals.lww.com/nuclearmedicinecomm/Abstract/2001/05000/Utility_of_ventilation_and_perfusion_scan_in_the.10.aspx

General Publication Utility of ventilation and perfusion scan in the diagnosis of young military recruits with an incidental finding of hyperlucent lung, 2016

Abstract


Özet

http://press.endocrine.org/doi/abs/10.1210/jc.2002-021438

General Publication Spoiled gradient recalled acquisition in the steady state technique is superior to conventional postcontrast spin echo technique for magnetic resonance imaging detection of adrenocorticotropin-secreting pituitary tumors, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0730725X08002233

General Publication Central neurocytoma: proton MR spectroscopy and diffusion weighted MR imaging findings, 2016

Abstract


Özet

http://search.proquest.com/openview/b71cf572e517c0a80d7514d9b389f615/1?pq-origsite=gscholar

General Publication Testicular microlithiasis in pediatric age group: ultrasonography findings and literature review, 2016

Abstract


Özet

http://journals.lww.com/jcat/Abstract/2004/09000/Imaging_Findings_in_Idiopathic_Granulomatous.9.aspx

General Publication Imaging findings in idiopathic granulomatous mastitis: a review with emphasis on magnetic resonance imaging, 2016

Abstract


Özet

http://link.springer.com/article/10.1007/s002709900433

General Publication Massive lower gastrointestinal hemorrhage from the surgical anastomosis in patients with multiorgan trauma: treatment by subselective embolization with polyvinyl alcohol particles, 2016

Abstract


Özet

http://www.angle.org/doi/abs/10.1043/0003-3219(2006)076[0400:IEOTTC]2.0.CO;2

General Publication Initial effects of the tongue crib on tongue movements during deglutition: a cine-magnetic resonance imaging study, 2016

Abstract


Özet

http://link.springer.com/article/10.1007/s00234-007-0263-8

General Publication Dysembryoplastic neuroepithelial tumors: proton MR spectroscopy, diffusion and perfusion characteristics, 2016

Abstract


Özet

http://search.proquest.com/openview/f5becfced12db5d56b60bbf8601856bd/1?pq-origsite=gscholar

General Publication HASTE diffusion-weighted MRI for the reliable detection of cholesteatoma, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0730725X10000627

General Publication Pediatric abdominal masses: diagnostic accuracy of diffusion weighted MRI, 2016

Abstract


Özet

https://www.researchgate.net/profile/Nail_Bulakbasi/publication/8645502_Intravenous_immunoglobulin_therapy_in_acute_disseminated_encephalomyelitis_associated_with_hepatitis_A_infection/links/55e57ffe08aecb1a7ccbafc2.pdf

General Publication Intravenous immunoglobulin therapy in acute disseminated encephalomyelitis associated with hepatitis A infection, 2016

Abstract


Özet

http://journals.lww.com/jcat/Abstract/2011/05000/Diffusion_Weighted_Imaging_in_the_Characterization.2.aspx

General Publication Diffusion-weighted imaging in the characterization of focal liver lesions: efficacy of visual assessment, 2016

Abstract


Özet

http://search.proquest.com/openview/cd5ab92440d32228e8cddcd77f60159f/1?pq-origsite=gscholar

General Publication CT and MRI in the evaluation of craniospinal involvement with polyostotic fibrous dysplasia in McCune-Albright syndrome, 2016

Abstract


Özet

http://link.springer.com/article/10.1007/s00234-003-1006-0

General Publication Comparison of contrast-enhanced T1-weighted and 3D constructive interference in steady state images for predicting outcome after hearing-preservation surgery for vestibular schwannoma, 2016

Abstract


Özet

http://link.springer.com/article/10.1007/s003300050490

General Publication TRUS, CT and MRI findings of hydatid disease of seminal vesicles, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0720048X06003251

General Publication Imaging features of benign adrenal cysts, 2016

Abstract


Özet

http://search.proquest.com/openview/a04366b1fd926fdd7edf01015378cc80/1?pq-origsite=gscholar

General Publication MR urography in pediatric uropathies with dilated urinary tracts, 2016

Abstract


Özet

http://journals.lww.com/jcat/Abstract/2003/07000/Value_of_Magnetic_Resonance_Imaging_in_the.33.aspx

General Publication Value of magnetic resonance imaging in the depiction of intravenous leiomyomatosis extending to the heart, 2016

Abstract


Özet

http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2842.2005.01605.x/full

General Publication Real time balanced turbo field echo Cine‐MRI in the analysis of deglutition events and transit times, 2016

Abstract


Özet

https://www.thieme-connect.com/products/ejournals/html/10.1055/s-2003-37969

General Publication Schwannoma of the lateral ventricle: eight-year follow-up and literature review, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0889540605010978

General Publication Real-time balanced turbo field echo cine-magnetic resonance imaging evaluation of tongue movements during deglutition in subjects with anterior open bite, 2016

Abstract


Özet

http://www.ajnr.org/content/27/8/1735.short

General Publication A rare cause of flank mass: psoas abscess due to extensive primary thoracolumbar tuberculous spondylodiskitis, 2016

Abstract


Özet

http://synapse.koreamed.org/DOIx.php?id=10.5021/ad.2012.24.4.420

General Publication Clinical features and etiology of adult patients with Fever and rash, 2016

Abstract


Özet

https://www.researchgate.net/profile/Nail_Bulakbasi/publication/5546623_Prolapsing_ectopic_ureterocele_presenting_as_a_vulval_mass_in_a_newborn_girl/links/00b7d536b48491bc70000000.pdf

General Publication Prolapsing ectopic ureterocele presenting as a vulval mass in a newborn girl, 2016

Abstract


Özet

http://www.springerlink.com/index/500NJ3Q11GL58715.pdf

General Publication Detection of widespread neurolymphomatosis with 18 F-FDG PET, 2016

Abstract


Özet

http://link.springer.com/article/10.1007/s004040050246

General Publication Percutaneous treatment of hepatic hydatid cyst in pregnancy, 2016

Abstract


Özet

http://link.springer.com/article/10.1007/s11604-012-0125-0

General Publication Magnetic resonance imaging predictors of surgical outcome in degenerative lumbar spinal stenosis, 2016

Abstract


Özet

http://onlinelibrary.wiley.com/doi/10.1002/jmri.20437/full

General Publication MRI findings of renal lymphangiectasia, 2016

Abstract


Özet

http://synapse.koreamed.org/DOIx.php?id=10.3348/kjr.2007.8.6.548

General Publication Pelvic hydatid disease: CT and MRI findings causing sciatica, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0895611103000156

General Publication A different approach to missile induced head injuries, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0889540611000801

General Publication Tongue movements in patients with skeletal Class III malocclusions evaluated with real-time balanced turbo field echo cine magnetic resonance imaging, 2016

Abstract


Özet

http://onlinelibrary.wiley.com/doi/10.1111/j.1754-9485.2010.02218.x/full

General Publication Corpus callosum: normal imaging appearance, variants and pathologic conditions, 2016

Abstract


Özet

http://www.ajnr.org/content/27/5/998.short

General Publication Symptomatic epidural gas after open diskectomy: CT and MR imaging findings, 2016

Abstract


Özet

http://onlinelibrary.wiley.com/doi/10.1002/jmri.20637/full

General Publication Intravenous contrast‐enhanced dynamic MR urography: Diagnosis of vesicoureteral reflux during bladder filling with time‐signal intensity curves, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0929826601001604

General Publication The value of ultrasonography in interrupted inferior vena cava with azygos continuation, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=11424394222172534005&hl=en&oi=scholarr

General Publication True Aneurysm Formation in Axillofemoral Bypass with a Reinforced ePTFE Graft A Case Report, 2016

Abstract


Özet

http://www.academia.edu/download/44309449/Atypical_mycobacterial_tenosynovitis_and20160401-29799-1xa7i8e.pdf

General Publication Atypical mycobacterial tenosynovitis and bursitis of the wrist, 2016

Abstract


Özet

http://www.tandfonline.com/doi/abs/10.3109/03009730903262118

General Publication Multifocal peliosis hepatis: MR and diffusion-weighted MR-imaging findings of an atypical case, 2016

Abstract


Özet

http://www.dirjournal.org/sayilar/8/buyuk/pdf_DIR_51.pdf

General Publication MR cholangiopancreatography of a case with a biliary tract variation and postoperative biliary duct injury, 2016

Abstract


Özet

http://europepmc.org/abstract/med/17402518

General Publication An unusual complication of the use of stapler after Hartmanns procedure., 2016

Abstract


Özet

http://www.ajronline.org/doi/abs/10.2214/AJR.09.2773

General Publication Diuretic-induced renal length changes in the estimation of renal function with MR urography, 2016

Abstract


Özet

General Publication Isolated complete congenital sternal cleft in an adult: MDCT imaging findings, 2016

Abstract


Özet

http://content.iospress.com/articles/spectroscopy/spe233

General Publication Clinical applications of proton MR spectroscopy in the diagnosis of brain tumours, 2016

Abstract


Özet

http://search.proquest.com/openview/c7dfffbe14267280796bd1a740e18f30/1?pq-origsite=gscholar

General Publication Neuro-otologic applications of MRI, 2016

Abstract


Özet

http://www.springerlink.com/index/1544874767233512.pdf

General Publication Common pitfalls in paediatric imaging: head and spine, 2016

Abstract


Özet

http://dergipark.ulakbim.gov.tr/bmj/article/download/5000060412/5000056989

General Publication Morphometric Assessment of Corpus Callosum and Cerebral Hemispheres with Magnetic Resonance Imaging, 2016

Abstract


Özet

http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2842.2011.02272.x/full

General Publication Effect of complete denture wearing on deglutition time: a cine‐magnetic resonance imaging study, 2016

Abstract


Özet

http://journals.tubitak.gov.tr/medical/abstract.htm?id=4368

General Publication Results of Acute Cerebral Anoxia in Adults: is it a Reversal Sign?, 2016

Abstract


Özet

https://www.sciandmed.com/mppa/journalviewer.aspx?issue=1209&article=2100

General Publication Avulsion Fracture and Myositis Ossificans in a Professional Teenage Dancer: A Case Report, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0889540611000527

General Publication Tongue movements in patients with skeletal Class II malocclusion evaluated with real-time balanced turbo field echo cine magnetic resonance imaging, 2016

Abstract


Özet

https://www.researchgate.net/profile/Nail_Bulakbasi/publication/298812301_Cerebral_and_orbital_magnetic_resonance_imaging_findings_in_methyl_alcohol_intoxication/links/5718b66f08ae986b8b79f9a3.pdf

General Publication Cerebral and orbital magnetic resonance imaging findings in methyl alcohol intoxication, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S1572349603000039

General Publication MRI features of lissencephaly with cerebellar hypoplasia, 2016

Abstract


Özet

General Publication Double chambered left ventricle with non-sustained ventricular tachycardia, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S1571467503000646

General Publication Multiple myeloma of the breast: mammographic, ultrasonographic and magnetic resonance imaging features, 2016

Abstract


Özet

http://www.journalagent.com/z4/download_fulltext.asp?pdir=travma&plng=eng&un=UTD-348973

General Publication Duodenal intramural hematoma due to blunt abdominal trauma, 2016

Abstract


Özet

http://synapse.koreamed.org/DOIx.php?id=10.4184/asj.2012.6.2.98

General Publication Radiological analysis of the triangular working zone during transforaminal endoscopic lumbar discectomy, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=17057714948824220212&hl=en&oi=scholarr

General Publication Magnetic Resonance Imaging Characteristics of a Gliosarcoma A Case Report, 2016

Abstract


Özet

http://pmr.cuni.cz/file/5657/PMR2013A0013.pdf

General Publication Interrelationship between liver hemodynamics and tumor metabolism in liver metastases: diagnostic value of Doppler perfusion index revisited, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S089970711300017X

General Publication Utility of semiquantitative parameters to differentiate benign and malignant focal hepatic lesions, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=6583812049809487089&hl=en&oi=scholarr

General Publication Giant infantile gliosarcoma: magnetic resonance imaging findings, 2016

Abstract


Özet

http://link.springer.com/article/10.1007/s10554-005-3206-7

General Publication Univentricular heart and supramitral ring: an unusual association, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=4579809248447379097&hl=en&oi=scholarr

General Publication Can Magnesium Sulphate Prevent Cerebral Ischemic Injury? An Experimental Study and Neuroradiological Evidence, 2016

Abstract


Özet

http://www.dirjournal.org/sayilar/62/buyuk/1-15178.pdf

General Publication Monitorization of chemotherapy response using diffusion-weighted imaging in neuroblastoma, 2016

Abstract


Özet

http://www.dirjournal.org/eng/makale/661/42/Paylas

General Publication Departments of Radiology, Gülhane Military Medical School, Ankara, Turkey 2 Departments of Head and Neck Surgery, Gülhane Military Medical School, Ankara, Turkey 3 Department of Radiology, Near East University School of Medicine, Nicosia, Northern Cyprus 4 Departments of Anatomy, Gülhane Military Medical School, Ankara, Turkey, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S1571467505000453

General Publication Lhermitte–Duclos disease (dysplastic cerebellar gangliocytoma): Magnetic resonance and diffusion imaging findings, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-cok-kesitli-bilgisayarli-tomografi-ile-kardiyak-bilgisayarli-tomografi-ve-radyasyon-maruziyeti-hasta-ve-saglik-personeli-acisindan-onemi-76558.html

General Publication Çok Kesitli Bilgisayarlı Tomografi ile Kardiyak Bilgisayarlı Tomografi ve Radyasyon Maruziyeti: Hasta ve Sağlık Personeli Açısından Önemi, 2016

Abstract


Özet

http://search.proquest.com/openview/f58dedfee110dcce9d076e045a45e64b/1?pq-origsite=gscholar

General Publication Patient Management Symposium in Emergency Medicine at North Cyprus Emergency Medicine Days, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-difuzyon-tensor-manyetik-rezonans-goruntuleme-ve-klinik-uygulamalari-69594.html

General Publication Difüzyon Tensör Manyetik Rezonans Görüntüleme ve Klinik Uygulamaları, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=3943379953430535727&hl=en&oi=scholarr

General Publication Endovascular treatment of a case presented as isolated superior mesenteric artery dissection, 2016

Abstract


Özet

http://link.springer.com/10.1007/978-90-481-8665-5_24

General Publication Metastatic Solitary Malignant Brain Tumor: Magnetic Resonance Imaging, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=285487489297600651&hl=en&oi=scholarr

General Publication Efficacy of in vivo 31Phosphorus Magnetic Resonance Spectroscopy in Differentiation and Staging of Adult Human Brain Tumors, 2016

Abstract


Özet

General Publication Gliom dışı intra-aksiyal beyin tümörleri, 2016

Abstract


Özet

https://www.researchgate.net/profile/Banu_Alicioglu/publication/230833222_Magnetic_resonance_imaging_predictors_of_surgical_outcome_in_degenerative_lumbar_spinal_stenosis/links/542afecc0cf277d58e8a0fc6.pdf

General Publication Banu Alicioglu, Baris Yilmaz, Nail Bulakbasi, Cem Copuroglu, Erol Yalniz, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-manyetik-rezonans-anjiografi-artefakt-ve-sinirlamalari-54527.html

General Publication Manyetik Rezonans Anjiografi Artefakt ve Sınırlamaları, 2016

Abstract


Özet

http://www.birpublications.org/doi/abs/10.1259/bjr.20160115

General Publication The middle interhemispheric variant of holoprosencephaly: magnetic resonance and diffusion tensor imaging findings, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=18304788550815018345&hl=en&oi=scholarr

General Publication P6-1 Effect of vagus nerve stimulation on EEG and seizure frequency in children with intractable epilepsy, 2016

Abstract


Özet

http://thejournalofbreasthealth.com/sayilar/39/buyuk/22-251.pdf

General Publication KKTC Yakın Doğu Üniversite Hastanesinde Erken Tanı ve Tarama Programında Tanı Konulan Meme Kanser Olgularının Değerlendirilmesi, 2016

Abstract


Özet

General Publication Yenidoğan kız çocukta vulval kitle şeklinde izlenen prolabe ektopik üreterosel, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-beyin-tumorlerinde-nororadyoloji-53294.html

General Publication Beyin Tümörlerinde Nöroradyoloji, 2016

Abstract


Özet

http://www.dirjournal.org/eng/arsivsayi/65/Archive/Issue

General Publication GENERAL RADIOLOGY ORIGINAL ARTICLE, 2016

Abstract


Özet

General Publication McCune-Albright sendromunda izlenen poliositik fibröz displaziye bağlı kraniospinal tutulumunun değerlendirilmesinde BT ve MR görüntülemenin etkinliği, 2016

Abstract


Özet

http://www.futuremedicine.com/doi/abs/10.2217/iim.09.20

General Publication Diffusion-tensor imaging in brain tumors, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=8261620931150835558&hl=en&oi=scholarr

General Publication Craniospinal Involvement in a Patient with Isolated Bone Marrow Mastocytosis A Case Report, 2016

Abstract


Özet

http://www.sciencedirect.com/science/article/pii/S0720048X06004864

General Publication MRI in long-term evaluation of reconstructed hind-feet of land–mine trauma patients, 2016

Abstract


Özet

General Publication Symptomatic epidural gas accumulation originating from vacuum phenomenon in the intervertebral disc: CT imaging findings, 2016

Abstract


Özet

http://www.springerlink.com/index/01526651321U1337.pdf

General Publication ESPR ABSTRACTS 2010, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=17897071581132012331&hl=en&oi=scholarr

General Publication Behçets Disease Presenting with Acute Transverse Myelitis: MRI Findings and Review of the Nosology A Case Report, 2016

Abstract


Özet

http://www.dirjournal.org/eng/ozet/374/25/Paylas

General Publication Departments of Radiology, Gülhane Military Medical Academy, Ankara, Turkey 2 Departments of Plastic and Reconstructive Surgery, Gülhane Military Medical Academy, Ankara, Turkey 3 Department of Radiology, Gülhane Military Medical Academy, Ankara, Turkey 4 From the Department of Radiology (MK*), Gülhane Military Medical Academy, Ankara, Turkey., 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=11449677660479698493&hl=en&oi=scholarr

General Publication RADIOLOGICAL EVALUATION OF CRANIOSPINAL INVOLVEMENT IN VON HIPPEL LINDAU SYNDROME, 2016

Abstract


Özet

http://www.dirjournal.org/eng/ozet/232/21/Paylas

General Publication Department of Radiology, Near East University School of Medicine, Nicosia, Northern Cyprus 2 Department of Radiology, Gülhane Military Medical Academy, Ankara, Turkey 3 From the Department of Radiology, Gülhane Military Medical Academy School of Medicine, Ankara, Turkey 4 Department of Radiology (MK*), Gülhane Military Medical Academy, Ankara, Turkey., 2016

Abstract


Özet

http://www.dirjournal.org/eng/makale/172/16/Full-Text

General Publication From the Department of Radiology (MK*), Gülhane Military Medical Academy, Ankara, Turkey. 2 Department of Radiology, Celal Bayar University School of Medicine, Manisa, Turkey, 2016

Abstract


Özet

http://www.dirjournal.org/eng/makale/202/18/Paylas

General Publication From the Departments of Radiology, Gülhane Military Academy of Medicine, Ankara, Turkey 2 Department of Radiology, Gülhane Military Medical Academy, Ankara, Turkey 3 From the Department of Radiology (MK*), Gülhane Military Medical Academy, Ankara, Turkey. 4 From the Departments of Pediatric Surgery, Gülhane Military Medical Academy, Ankara, Turkey, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-temporal-kemik-52318.html

General Publication Temporal Kemik, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-over-tumorlerinde-radyolojik-goruntuleme-48750.html

General Publication Over Tümörlerinde Radyolojik Görüntüleme, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=11997568344207145607&hl=en&oi=scholarr

General Publication IMAGES IN CLINICAL RADIOLOGY-Psoas muscle lipoma., 2016

Abstract


Özet

General Publication Osteogenezis imperfektada izlenen kranyoservikal bileşke değişikliklerine bağlı BOS akım bozukluklarının dinamik sine-MR incelemesi, 2016

Abstract


Özet

General Publication Left ventricular mass, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=13372092978765189433&hl=en&oi=scholarr

General Publication Clinical, MR Imaging and MR Spectroscopy Findings in Cohen Syndrome A Case Report, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=2031314648071638753&hl=en&oi=scholarr

General Publication Epilepsy surgery in children and adolescents: Gulhane military medical school epilepsy surgery groups experience, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=9287366476675855346&hl=en&oi=scholarr

General Publication Mirizzi syndrome in an icteric patient: MRI and MRCP findings, 2016

Abstract


Özet

General Publication An usual form of double outlet right ventricle, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=542940067495023039&hl=en&oi=scholarr

General Publication Real-time balanced turbo field echo cine-magnetic resonance imaging evaluation of tongue movements during deglutition in subjects with anterior open bite (vol 129, pg 24, 2006), 2016

Abstract


Özet

General Publication Preoperative evaluation of solitary malignant brain tumors with MR spectroscopy and diffusion weighted imaging, 2016

Abstract


Özet

https://www.researchgate.net/profile/Nail_Bulakbasi/publication/250715961_Erratum_to_Walker-Warburg_syndrome_variant_Computerised_Medical_Imaging_and_Graphics_26_2002_453-458/links/00b7d536b4838a15ae000000.pdf

General Publication Erratum to “Walker–Warburg syndrome variant”[Computerised Medical Imaging and Graphics 26 (2002) 453–458] q, 2016

Abstract


Özet

http://www.ejmanager.com/mnstemps/7/pdf_GMJ_236.pdf

General Publication Yenidoğanda overin inguinal herniasyonu: torsiyon tanısında renkli doppler ultrasonografi, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=12463965072448594716&hl=en&oi=scholarr

General Publication Erratum to “Walker–Warburg syndrome variant”[Computerised Medical Imaging and Graphics 26 (2002) 453–458], 2016

Abstract


Özet

http://www.ejmanager.com/mnstemps/7/pdf_GMJ_207.pdf

General Publication Horizontal şaşılık olgularında manyetik rezonans görüntüleme ile iç ve dış rektus kas kalınlıklarının değerlendirilmesi: ambliyopinin etkisi, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=8246780385058053883&hl=en&oi=scholarr

General Publication Endocrine Care-Of Special Interest to the Practice of Endocrinology-Spoiled Gradient Recalled Acquisition in the Steady State Technique Is Superior to Conventional Postcontrast Spin Echo, 2016

Abstract


Özet

http://www.ejmanager.com/mnstemps/7/pdf_GMJ_240.pdf

General Publication İntradiploik yerleşimli epidermoid kist: bilgisayarlı tomografi, manyetik rezonans görüntüleme ve difüzyon ağırlıklı manyetik rezonans görüntüleme bulguları (olgu sunumu), 2016

Abstract


Özet

https://www.researchgate.net/profile/Nail_Bulakbasi/publication/43555722_Meuroimage_-_Cranial_nerve_lymphomatosis/links/00b7d536b483c2a7c4000000.pdf

General Publication Cranial nerve lymphomatosis, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=5483075623806720468&hl=en&oi=scholarr

General Publication Vagal nerve stimulation in drug resistant epilepsy: Experience with 7 cases, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-dil-paravaninin-yutkunma-sirasinda-dil-hareketleri-uzerindeki-etkilerinin-acik-kapanisli-bir-hastada-sine-mr-goruntuleme-teknigi-ile-degerlendirilmesi-44694.html

General Publication Dil Paravanının Yutkunma Sırasında Dil Hareketleri Üzerindeki Etkilerinin Açık Kapanışlı Bir Hastada Sine-MR Görüntüleme Tekniği ile Değerlendirilmesi, 2016

Abstract


Özet

General Publication Embolization of posttraumatic and postsurgical lower gastrointestinal bleeding, 2016

Abstract


Özet

General Publication Von Hippel-Lindau sendromunda izlenen kranyospinal tutulumun radyolojik deÄŸerlendirmesi, 2016

Abstract


Özet

http://www.journalagent.com/z4/download_fulltext.asp?pdir=anatoljcardiol&plng=eng&un=AJC-13914

General Publication E-page Original Images E-sayfa Özgün Görüntüler E-5, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=13539078536680877391&hl=en&oi=scholarr

General Publication GEREÇ VE YÖNTEM, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=14616706416961491440&hl=en&oi=scholarr

General Publication DYNAMIC CINE MR IMAGING IN THE DEMONSTRATION OF CSF FLOW DISTURBANCES DUE TO CRANIOCERVICAL JUNCTION ANOMALIES IN OSTEOGENESIS IMPERFECTA, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=10274491005460042126&hl=en&oi=scholarr

General Publication EFFICACY OF MAGNETIC RESONANCE SPECTROSCOPY IN THE DETERMINATION OF AN EPILEPTOGENIC FOCUS IN HYPOTHALAMIC HAMARTOMAS, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=2868316810165217227&hl=en&oi=scholarr

General Publication Hipotalamik hamartomlarda epileptojenik odağın ortaya konmasında MR spektroskopinin etkinliği, 2016

Abstract


Özet

http://www.thejournalofbreasthealth.com/sayilar/39/buyuk/22-25.pdf

General Publication Evaluation of Breast Cancer Cases Diagnosed In the Breast Cancer Screening Program In the Near East University Hospital of North Cyprus, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-spinal-yaralanmalarin-tanisinda-direkt-radyografi-ve-bilgisayarli-tomografi-bulgulari-31205.html

General Publication Spinal Yaralanmaların Tanısında Direkt Radyografi ve Bilgisayarlı Tomografi Bulguları, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=15073974592127563714&hl=en&oi=scholarr

General Publication MRI in Joubert Syndrome, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=13324012215638512226&hl=en&oi=scholarr

General Publication Role of fine needle aspiration biopsy in the diagnosis of orbital masses, 2016

Abstract


Özet

http://www.turkiyeklinikleri.com/article/en-spinal-yaralanmalarin-tanisindamanyetik-rezonans-goruntuleme-bulgulari-31199.html

General Publication Spinal Yaralanmaların TanısındaManyetik Rezonans Görüntüleme Bulguları, 2016

Abstract


Özet

General Publication Hipokampal skleroz tanısında proton manyetik rezonans spektroskopinin tanıya olan katkısı, 2016

Abstract


Özet

http://www.bioline.org.br/pdf?ni06038

General Publication Meuroimage-Cranial nerve lymphomatosis, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=1029373798910151680&hl=en&oi=scholarr

General Publication PROTON MAGNETIC RESONANCE SPECTROSCOPY IN THE DIAGNOSIS OF HIPPOCAMPAL SCLEROSIS, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=2808242492782099118&hl=en&oi=scholarr

General Publication Percutaneous treatment of bilomas secondary to laparoscopic cholecystectomy, 2016

Abstract


Özet

http://scholar.google.com/scholar?cluster=17357859662991583224&hl=en&oi=scholarr

General Publication Percutaneous management of solitary splenic abscesses, 2016

Abstract


Özet

Monitorization of chemotherapy response by using diffusion weighted imaging in neuroblastoma

Letter to the Editor Diagn Interv Radiol, Volume doi: 10.5152/dir.2015.15178. , 2015

Abstract


Özet

Massive lower gastrointestinal hemorrhage from the surgical anastomosis in patients with multiorgan trauma: Treatment by subselective embolization with polyvinyl alcohol particles.

Original Article Cardiovasc Intervent Radio, Volume 22, Issue 6, 1999, Pages 461-467

Abstract

PURPOSE: To evaluate the efficacy and safety of subselective arterial embolization with polyvinyl alcohol (PVA) particles with or without microcoil augmentation to control postoperative lower gastrointestinal (GI) bleeding. METHODS: Ten patients with clinical, scintigraphic, and angiographic evidence of postoperative lower GI bleeding were considered for subselective embolization. Subselective embolizations were performed through coaxial microcatheters with 355-500 micron PVA particles with or without additional coil embolization. RESULTS: Embolization was technically successful in 9 of 10 (90%) patients. In one patient, subselective embolization was not possible; consequently no embolization was performed. Clinical success was achieved after a single embolization in 6 of 10 (60%) patients and after a second embolization in an additional 3 of the 10 (30%) patients. While there was no rebleeding in patients with normal coagulation parameters, all three patients (100%) with coagulopathy rebled, two of them from another source. Although no acute ischemic effects developed, no long-term sequela such as ischemic stricture were specifically looked for. Seven patients developed abdominal discomfort and/or fever within 24-48 hr. Four of 10 patients died of complications other than hemorrhage or ischemia. CONCLUSION: Subselective PVA embolization with or without a microcoil embolization is an effective and safe means of managing postoperative lower GI hemorrhage in patients with multiorgan trauma.


Özet

PURPOSE: To evaluate the efficacy and safety of subselective arterial embolization with polyvinyl alcohol (PVA) particles with or without microcoil augmentation to control postoperative lower gastrointestinal (GI) bleeding. METHODS: Ten patients with clinical, scintigraphic, and angiographic evidence of postoperative lower GI bleeding were considered for subselective embolization. Subselective embolizations were performed through coaxial microcatheters with 355-500 micron PVA particles with or without additional coil embolization. RESULTS: Embolization was technically successful in 9 of 10 (90%) patients. In one patient, subselective embolization was not possible; consequently no embolization was performed. Clinical success was achieved after a single embolization in 6 of 10 (60%) patients and after a second embolization in an additional 3 of the 10 (30%) patients. While there was no rebleeding in patients with normal coagulation parameters, all three patients (100%) with coagulopathy rebled, two of them from another source. Although no acute ischemic effects developed, no long-term sequela such as ischemic stricture were specifically looked for. Seven patients developed abdominal discomfort and/or fever within 24-48 hr. Four of 10 patients died of complications other than hemorrhage or ischemia. CONCLUSION: Subselective PVA embolization with or without a microcoil embolization is an effective and safe means of managing postoperative lower GI hemorrhage in patients with multiorgan trauma.

Cerebral and orbital magnetic resonance imaging findings in methyl alcohol intoxication.

Original Article Int J Neuroradiol , Volume 5, 1999, Pages 145-150

Abstract


Özet

-

Original Article -, Volume -, Issue -, 2000, Pages -

Abstract

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Özet

DÜZGÜN YILDIRIM, BENGİ GÜRSES, KENAN KIBICI, İNANÇ GÜVENÇ, NAİL BULAKBAŞI, CEM TAYFUN. MRI CHARACTERISTICS OF ATYPICALLY WIDE PERIVASCULAR SPACES. Yeditepe Medical Journal Yıl: 2010 Cilt: 14 Sayfa: 288-294

Results of Acute Cerebral Anoxia in Adults: is it a Reversal Sign?

Original Article Turkish Journal of Medical Sciences , Volume 30, Issue 6, 2000, Pages 571-577

Abstract

Objective: The aim of this study is to describe the results of acute cerebral anoxia in adults as a reversal sign. Methods: We retrospectively examined the CT and MR images of 9 patients in a vegetative state due to acute prolonged anoxia. Each of them had at least one MRI and 4 CT exams 6-12 hours, 10-14 days, 6-8 months and 1 year after the anoxic event. The degree of the cerebral atrophy and the mean density values of cerebral white matter were measured and calculated to demonstrate quantitative changes over time. Results: We detected a diffuse density decrease of cerebral cortical gray and white matter with a decreased or lost gray/white matter interface and relative preservation of the densities of the thalami, brain stem and cerebellum in CT scans. In addition to CT findings, we found hyperintense areas in periventricular white matter on T2W SE sequences probably due to myelin loss, glial proliferation, microinfarcts and extracellular edema, and bright signals on T1W SE sequences due to paramagnetic pigment deposits. Conclusions: As a result, we thought that the reversal sign was a characteristic finding of the ischemic state of the adult brain in CT, and it demonstrated irreversible brain damage and carried a poor prognosis.


Özet

Objective: The aim of this study is to describe the results of acute cerebral anoxia in adults as a reversal sign. Methods: We retrospectively examined the CT and MR images of 9 patients in a vegetative state due to acute prolonged anoxia. Each of them had at least one MRI and 4 CT exams 6-12 hours, 10-14 days, 6-8 months and 1 year after the anoxic event. The degree of the cerebral atrophy and the mean density values of cerebral white matter were measured and calculated to demonstrate quantitative changes over time. Results: We detected a diffuse density decrease of cerebral cortical gray and white matter with a decreased or lost gray/white matter interface and relative preservation of the densities of the thalami, brain stem and cerebellum in CT scans. In addition to CT findings, we found hyperintense areas in periventricular white matter on T2W SE sequences probably due to myelin loss, glial proliferation, microinfarcts and extracellular edema, and bright signals on T1W SE sequences due to paramagnetic pigment deposits. Conclusions: As a result, we thought that the reversal sign was a characteristic finding of the ischemic state of the adult brain in CT, and it demonstrated irreversible brain damage and carried a poor prognosis.

Utility of ventilation and perfusion scan in the diagnosis of young military recruits with an incidental finding of hyperlucent lung

Original Article Nuclear medicine communications, Volume *, Issue -, 2001, Pages -

Abstract

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Özet

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Comparison of In-111 octreotide and Tc-99m (V) DMSA scintigraphy in the detection of medullary thyroid tumor foci in patients with elevated levels of tumor markers after surgery

Original Article Clin Nucl Med , Volume 26, Issue 8, 2001, Pages 683-688

Abstract


Özet

Combination of single voxel proton MR spectroscopy and apparent diffusion coefficients calculation in the evaluation of common brain tumors

Original Article AJNR Am J Neuroradiol , Volume 24, Issue 2, 2003, Pages 225-233

Abstract

Aim: This work aims to study the role of combined apparent diffusion coefficient (ADC) and Magnetic resonance spectroscopy (MRS) in grading malignant brain neoplasms. Methods: A prospective study included 40 patients who were evaluated by standard contrast enhanced MRI, diffusion weighted imaging and multivoxel spectroscopy. Results: Statistically significant difference was found between tumoral ADC values in low grade versus high grade tumors and metastasis and also between the peritumoral ADC values in metastasis versus low and high grade tumors. Statistically significant difference is noticed between tumoral Cho/Cr ratio values in low grade versus high grade tumors and metastasis, and also peritumoral Cho/Cr ratio values in low grade and metastasis versus high grade tumors. Statistically significant difference between tumoral Cho/NAA ratio in low grade versus high grade tumors and metastasis and lastly between peritumoral Cho/NAA ratio in low grade and metastasis versus high grade tumors was found. Lipid and lactate peaks were found frequently in high grade tumors and metastasis. Conclusion: The combination of calculated ADC values and MR spectroscopy is useful in grading of malignant brain tumors and were more useful together than each on its own.


Özet

Aim: This work aims to study the role of combined apparent diffusion coefficient (ADC) and Magnetic resonance spectroscopy (MRS) in grading malignant brain neoplasms. Methods: A prospective study included 40 patients who were evaluated by standard contrast enhanced MRI, diffusion weighted imaging and multivoxel spectroscopy. Results: Statistically significant difference was found between tumoral ADC values in low grade versus high grade tumors and metastasis and also between the peritumoral ADC values in metastasis versus low and high grade tumors. Statistically significant difference is noticed between tumoral Cho/Cr ratio values in low grade versus high grade tumors and metastasis, and also peritumoral Cho/Cr ratio values in low grade and metastasis versus high grade tumors. Statistically significant difference between tumoral Cho/NAA ratio in low grade versus high grade tumors and metastasis and lastly between peritumoral Cho/NAA ratio in low grade and metastasis versus high grade tumors was found. Lipid and lactate peaks were found frequently in high grade tumors and metastasis. Conclusion: The combination of calculated ADC values and MR spectroscopy is useful in grading of malignant brain tumors and were more useful together than each on its own.

Spoiled gradient recalled acquisition in the steady state technique is superior to conventional post-contrast spin echo technique for MRI detection of adrenocorticotropin-secreting pituitary tumors

Original Article J Clin Endocrinol Metab , Volume 88, Issue 4, 2003, Pages 1565-1569

Abstract

Recent studies show that the standard T1-weighted spin echo (SE) technique for magnetic resonance imaging (MRI) fails to identify 40% of corticotrope adenomas. We hypothesized that the superior soft tissue contrast and thinner sections obtained with spoiled gradient recalled acquisition in the steady state (SPGR) would improve tumor detection. We compared the performance of SE and SPGR MRI in 50 patients (age, 7-67 yr) with surgically confirmed corticotrope adenoma. Coronal SE and SPGR MR images were obtained before and after administration of gadolinium contrast, using a 1.5 T scanner. SE scans were obtained over 5.1 min (12-cm field of view; interleaved sections, 3 mm). SPGR scans were obtained over 3.45 min (12- or 18-cm field of view, contiguous 1- or 2-mm slices). The MRI interpretations of two radiologists were compared with findings at surgical resection. Compared with SE for detection of tumor, SPGR had superior sensitivity (80%; confidence interval, 68-91; vs. 49%; confidence interval, 34-63%), but a higher false positive rate (2% vs. 4%). We recommend the addition of SPGR to SE sequences using pituitary-specific technical parameters to improve the MRI detection of ACTH-secreting pituitary tumors.


Özet

Recent studies show that the standard T1-weighted spin echo (SE) technique for magnetic resonance imaging (MRI) fails to identify 40% of corticotrope adenomas. We hypothesized that the superior soft tissue contrast and thinner sections obtained with spoiled gradient recalled acquisition in the steady state (SPGR) would improve tumor detection. We compared the performance of SE and SPGR MRI in 50 patients (age, 7-67 yr) with surgically confirmed corticotrope adenoma. Coronal SE and SPGR MR images were obtained before and after administration of gadolinium contrast, using a 1.5 T scanner. SE scans were obtained over 5.1 min (12-cm field of view; interleaved sections, 3 mm). SPGR scans were obtained over 3.45 min (12- or 18-cm field of view, contiguous 1- or 2-mm slices). The MRI interpretations of two radiologists were compared with findings at surgical resection. Compared with SE for detection of tumor, SPGR had superior sensitivity (80%; confidence interval, 68-91; vs. 49%; confidence interval, 34-63%), but a higher false positive rate (2% vs. 4%). We recommend the addition of SPGR to SE sequences using pituitary-specific technical parameters to improve the MRI detection of ACTH-secreting pituitary tumors.

A different approach to missile induced head injuries.

Original Article Comput Med Imaging Graph , Volume 27, Issue 5, 2003, Pages 397-409

Abstract

Missile induced head injuries can be influenced by the anatomical location of the injury, i.e. type of tissue and by the ballistic properties such as the design of the weapon and the mass, shape and construction of the projectile, as well as its velocity characteristics and trajectory angle. In the diagnostic work up of the patients with missile induced head injuries, every available modality can be used. It is important, however, to recognize that CT scan is the primary and most efficacious diagnostic tool in such patients. In this article we have identified risk factors for both morbidity and mortality in patients with missile induced head injury with excluding the patients who had also extracranial serious trauma and systemic disease.


Özet

Missile induced head injuries can be influenced by the anatomical location of the injury, i.e. type of tissue and by the ballistic properties such as the design of the weapon and the mass, shape and construction of the projectile, as well as its velocity characteristics and trajectory angle. In the diagnostic work up of the patients with missile induced head injuries, every available modality can be used. It is important, however, to recognize that CT scan is the primary and most efficacious diagnostic tool in such patients. In this article we have identified risk factors for both morbidity and mortality in patients with missile induced head injury with excluding the patients who had also extracranial serious trauma and systemic disease.

Comparison of contrast-enhanced T1 weighted and 3D constructive interference in steady state images for predicting outcome after hearing-preservation surgery for vestibular schwannoma

Original Article Neuroradiology, Volume 45, Issue 7, 2003, Pages 476-481

Abstract

We compared contrast-enhanced T1-weighted and 3D constructive interference in steady state (CISS) sequences for demonstrating possible prognostic factors in hearing-preservation surgery for vestibular schwannoma. We studied 22 patients with vestibular schwannomas having hearing-preservation surgery. Postoperatively six (27%) had a facial palsy and eight (36%) had hearing loss. There was a significant correlation between the size of the tumour and facial palsy (r=-0.72). Both techniques adequately demonstrated all tumours. Involvement of the fundus of the internal auditory canal (IAC) and a small distance between the lateral border of the tumour and the fundus were correlated significantly with hearing loss (r=-0.81 and -0.75, respectively). The 3D-CISS sequence, by virtue of its high contrast resolution was superior to T1-weighted images (P<0.05) for detection of the fundal involvement. The direction of displacement of the facial nerve did not correlate with facial palsy or hearing loss. We think that 3D-CISS images better show the features influencing surgical outcome, but that contrast-enhanced T1-weighted images are required for diagnosis.


Özet

We compared contrast-enhanced T1-weighted and 3D constructive interference in steady state (CISS) sequences for demonstrating possible prognostic factors in hearing-preservation surgery for vestibular schwannoma. We studied 22 patients with vestibular schwannomas having hearing-preservation surgery. Postoperatively six (27%) had a facial palsy and eight (36%) had hearing loss. There was a significant correlation between the size of the tumour and facial palsy (r=-0.72). Both techniques adequately demonstrated all tumours. Involvement of the fundus of the internal auditory canal (IAC) and a small distance between the lateral border of the tumour and the fundus were correlated significantly with hearing loss (r=-0.81 and -0.75, respectively). The 3D-CISS sequence, by virtue of its high contrast resolution was superior to T1-weighted images (P<0.05) for detection of the fundal involvement. The direction of displacement of the facial nerve did not correlate with facial palsy or hearing loss. We think that 3D-CISS images better show the features influencing surgical outcome, but that contrast-enhanced T1-weighted images are required for diagnosis.

Imaging findings in idiopathic granulomatous mastitis: a review with emphasis on magnetic resonance imaging

Original Article Journal of computer assisted tomography, Volume *, Issue -, 2004, Pages -

Abstract

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Özet

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The added value of the apparent diffusion coeficient calculation to magnetic resonance imaging in the differentiation and grading of malignant brain tumors.

Original Article J Comput Assist Tomogr , Volume 28, Issue 6, 2004, Pages 735-746

Abstract

Results: Tumoral ADC values (r = -0.738, P < 0.000) and ratios (r = -0.746, P < 0.000) were well correlated with higher degree of malignancy and quite effective in grading of malignant brain tumors (P < 0.000). By using cutoff values of 0.99 for tumoral ADC value and 1.22 for normalized ADC ratio, the sensitivity of MR imaging could be increased from 72.22% to 93.75% and 90.63%, the specificity from 81.08% to 92.68% and 90.24%, PPV from 78.79% to 90.91% and 87.88%, and NPV from 75.00% to 95.00% and 92.50%, respectively. Conclusion: ADC calculation was quite effective in grading of malignant brain tumors but not in differentiation of them and added more information to conventional contrast-enhanced MR imaging.


Özet

Objective: ADC calculation can improve the diagnostic efficacy of MR imaging in brain tumor grading and differentiation. Methods: Apparent diffusion coefficient (ADC) values and ratios of 33 low-grade (23 astrocytomas, 10 oligodendrogliomas) and 40 high-grade (25 metastases and 15 high-grade astrocytomas) malignant tumors were prospectively evaluated. Results: Tumoral ADC values (r = -0.738, P < 0.000) and ratios (r = -0.746, P < 0.000) were well correlated with higher degree of malignancy and quite effective in grading of malignant brain tumors (P < 0.000). By using cutoff values of 0.99 for tumoral ADC value and 1.22 for normalized ADC ratio, the sensitivity of MR imaging could be increased from 72.22% to 93.75% and 90.63%, the specificity from 81.08% to 92.68% and 90.24%, PPV from 78.79% to 90.91% and 87.88%, and NPV from 75.00% to 95.00% and 92.50%, respectively. Conclusion: ADC calculation was quite effective in grading of malignant brain tumors but not in differentiation of them and added more information to conventional contrast-enhanced MR imaging.

Testicular microlithiasis in pediatric age group:ultrasonography findings and literature review

Original Article Diagn Interv Radiol , Volume 11, Issue 1, 2005, Pages 60-65

Abstract

PURPOSE To evaluate the occurrence of testicular microlithiasis in pediatric age group by means of ultrasonography (US) examinations and to review the literature for pediatric testicular microlithiasis cases accompanied by testicular and extratesticular tumors. MATERIALS AND METHODS Nine children aged 3-16 years (mean age, 9.2 years) with testicular microlithiasis had been evaluated with US in a period ranging from 6 months to 6 years. In addition to the testicular ultrasonographic evaluation, liver US and abdominopelvic US were performed in all patients. RESULTS Typical testicular microlithiasis ndings were seen in a total of 17 testicles. In one patient, testis did not exist in either the scrotum or the inguinal canal or the abdomen unilaterally. None of the patients displayed a focal lesion during the evaluation. The abdominal ultrasonographic ndings were normal in all patients. CONCLUSION Although no tumoral lesion accompanying testicular microlithiasis or occurring in the course of evaluation was detected in this study, larger population and longer control periods are required, considering the co-existence of benign and malign lesions with tes- ticular microlithiasis in the literature.


Özet

PURPOSE To evaluate the occurrence of testicular microlithiasis in pediatric age group by means of ultrasonography (US) examinations and to review the literature for pediatric testicular microlithiasis cases accompanied by testicular and extratesticular tumors. MATERIALS AND METHODS Nine children aged 3-16 years (mean age, 9.2 years) with testicular microlithiasis had been evaluated with US in a period ranging from 6 months to 6 years. In addition to the testicular ultrasonographic evaluation, liver US and abdominopelvic US were performed in all patients. RESULTS Typical testicular microlithiasis ndings were seen in a total of 17 testicles. In one patient, testis did not exist in either the scrotum or the inguinal canal or the abdomen unilaterally. None of the patients displayed a focal lesion during the evaluation. The abdominal ultrasonographic ndings were normal in all patients. CONCLUSION Although no tumoral lesion accompanying testicular microlithiasis or occurring in the course of evaluation was detected in this study, larger population and longer control periods are required, considering the co-existence of benign and malign lesions with tes- ticular microlithiasis in the literature.

Assessment of diagnostic accuracy of perfusion MR imaging in primary and metastatic solitary malignant brain tumors

Original Article AJNR Am J Neuroradiol , Volume 26, Issue 9, 2005, Pages 2187-2199

Abstract

PURPOSE: The purpose of this study was to estimate the diagnostic accuracy of relative cerebral blood volume (rCBV) measurement in preoperative grading and differentiation of solitary intra-axial malignant brain tumors. METHODS: Thirty-six low-grade glial tumors (LGGTs), 22 high-grade glial tumors (HGGTs), and 17 metastases (METs) were prospectively evaluated by MR imaging and standard dynamic susceptibility contrast-enhanced gradient echo, echoplanar imaging during first pass of a bolus injection of contrast material. Normalized rCBV values from tumoral (rCBVT) and peritumoral (rCBVP) areas were calculated by standard software and statistically tested independently. RESULTS: The mean differences of rCBVT and rCBVP values between LGGT (2.30 1.12 and 1.18 0.24) and HGGT (5.42 1.52 and 2.17 0.82) (P < .001); HGGTs and METs (3.21 0.98 and 0.97 0.09) (P < .001); and LGGTs and METs (P < .05 and P < .001, respectively) were significant. No clear cutoff value was present. A clear rCBVT cutoff value of 2.6 was detected for differentiation of low- (1.75 0.38; LGA) versus high-grade (4.78 0.99; HGA) astrocytomas when nonastrocytic glial tumors were excluded. The rCBVT values were linearly correlated with degree of malignancy (r 0.869; P < .001). Cutoff rCBVP values of 1.1 and 1.2 were quite effective in differentiation of METs from LGGTs and HGGTs, respectively. The overall efficacy of rCBV was higher in grading than in differentiation. CONCLUSION: The diagnostic accuracy of rCBV measurement is higher in grading of glial brain tumors than in differentiation of HGGTs from solitary intra-axial METs. The astrocytic and nonastrocytic glial tumors have to be evaluated separately for precise grading.


Özet

PURPOSE: The purpose of this study was to estimate the diagnostic accuracy of relative cerebral blood volume (rCBV) measurement in preoperative grading and differentiation of solitary intra-axial malignant brain tumors. METHODS: Thirty-six low-grade glial tumors (LGGTs), 22 high-grade glial tumors (HGGTs), and 17 metastases (METs) were prospectively evaluated by MR imaging and standard dynamic susceptibility contrast-enhanced gradient echo, echoplanar imaging during first pass of a bolus injection of contrast material. Normalized rCBV values from tumoral (rCBVT) and peritumoral (rCBVP) areas were calculated by standard software and statistically tested independently. RESULTS: The mean differences of rCBVT and rCBVP values between LGGT (2.30 1.12 and 1.18 0.24) and HGGT (5.42 1.52 and 2.17 0.82) (P < .001); HGGTs and METs (3.21 0.98 and 0.97 0.09) (P < .001); and LGGTs and METs (P < .05 and P < .001, respectively) were significant. No clear cutoff value was present. A clear rCBVT cutoff value of 2.6 was detected for differentiation of low- (1.75 0.38; LGA) versus high-grade (4.78 0.99; HGA) astrocytomas when nonastrocytic glial tumors were excluded. The rCBVT values were linearly correlated with degree of malignancy (r 0.869; P < .001). Cutoff rCBVP values of 1.1 and 1.2 were quite effective in differentiation of METs from LGGTs and HGGTs, respectively. The overall efficacy of rCBV was higher in grading than in differentiation. CONCLUSION: The diagnostic accuracy of rCBV measurement is higher in grading of glial brain tumors than in differentiation of HGGTs from solitary intra-axial METs. The astrocytic and nonastrocytic glial tumors have to be evaluated separately for precise grading.

MR urography in pediatric uropathies with dilated urinary tracts

Original Article Diagn Interv Radiol , Volume 11, Issue 4, 2005, Pages 225-232

Abstract

PURPOSE To determine the diagnostic value of magnetic reso- nance (MR) urography in children with urinary tract dilatation. MATERIALS AND METHODS Twenty-five children between the ages of 4 months and 13 years (19 males and 6 females, mean age 6.5 years) were evaluated with T2 weighted and contrast- enhanced T1 weighted MR sequences. Results were compared with findings obtained with ultrasonogra- phy (n=25), intravenous urography (n=18), Tc99m- DTPA scintigraphy (n=16), and/or micturating cys- touretrography (n=13). RESULTS MR urography provided a superior imaging of uri- nary system dilatation, the site and the etiology of obstruction, and both regular and complicated kidney duplication than did conventional imaging methods. MR urography that used T2 weighted se- quences was able to demonstrate 29 of 32 (90.6%) abnormal renal collecting systems. Fourteen of 21 (66.7%) normal systems were revealed by heavily T2 weighted images. Forty-six of 51 (90.2%) renal collecting systems could be shown by T1 weighted sequences. With this sequence, however, five collect- ing systems (9.8%) could not be shown secondary to poor renal function and/or dilution of contrast agent within the dilated urinary tract. CONCLUSION In children, MR urography may replace conventional uroradiological methods.


Özet

PURPOSE To determine the diagnostic value of magnetic reso- nance (MR) urography in children with urinary tract dilatation. MATERIALS AND METHODS Twenty-five children between the ages of 4 months and 13 years (19 males and 6 females, mean age 6.5 years) were evaluated with T2 weighted and contrast- enhanced T1 weighted MR sequences. Results were compared with findings obtained with ultrasonogra- phy (n=25), intravenous urography (n=18), Tc99m- DTPA scintigraphy (n=16), and/or micturating cys- touretrography (n=13). RESULTS MR urography provided a superior imaging of uri- nary system dilatation, the site and the etiology of obstruction, and both regular and complicated kidney duplication than did conventional imaging methods. MR urography that used T2 weighted se- quences was able to demonstrate 29 of 32 (90.6%) abnormal renal collecting systems. Fourteen of 21 (66.7%) normal systems were revealed by heavily T2 weighted images. Forty-six of 51 (90.2%) renal collecting systems could be shown by T1 weighted sequences. With this sequence, however, five collect- ing systems (9.8%) could not be shown secondary to poor renal function and/or dilution of contrast agent within the dilated urinary tract. CONCLUSION In children, MR urography may replace conventional uroradiological methods.

Transient splenial lesion of the corpus callosum in clinically mild influenza-associated encephalitis/encephalopathy

Original Article American journal of neuroradiology, Volume *, Issue -, 2006, Pages -

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Özet

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Dil Paravanının Yutkunma Sırasında Dil Hareketleri Üzerindeki Etkilerinin Açık Kapanışlı Bir Hastada Sine-MR Görüntüleme Tekniği ile Değerlendirilmesi

Original Article Turkiye Klinikleri Journal of Dental Sciences, Volume *, Issue -, 2006, Pages -

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Real time balanced turbo field echo cine-magnetic resonance imaging evaluation of tounge movements during deglution in subjects with anterior open bite.

Original Article Am J Orthod Dentofacial Orthop , Volume 129, Issue 1, 2006, Pages 24-28

Abstract

Tongue thrust usually develops in the presence of anterior open bite in order to achieve anterior valve function. In the literature, tongue thrust is described both as the result and the cause of open bite. If it is an adaptation to malocclusion, then tongue posture and deglutitive tongue movements should change after treatment. In this case report, an adult who had skeletal open bite and Class II malocclusion caused by mandibular retrusion was treated surgically. The mandible was advanced in a forward and upward direction with a sagittal split osteotomy. The open bite and Class II malocclusion were corrected and an increase in the posterior airway space (PAS) was observed. Pretreatment and posttreatment dynamic magnetic resonance imaging (MRI) revealed that tongue tip was retruded behind the incisors and contact of the tongue with the palate increased. It was also determined that the anterior and middle portions descended, whereas the posterior portion was elevated at all stages. Advancement of the mandible, correction of open bite, and an increase in PAS affected not only the tongue posture and deglutitive movements, but also the breathing pattern of the patient.


Özet

Tongue thrust usually develops in the presence of anterior open bite in order to achieve anterior valve function. In the literature, tongue thrust is described both as the result and the cause of open bite. If it is an adaptation to malocclusion, then tongue posture and deglutitive tongue movements should change after treatment. In this case report, an adult who had skeletal open bite and Class II malocclusion caused by mandibular retrusion was treated surgically. The mandible was advanced in a forward and upward direction with a sagittal split osteotomy. The open bite and Class II malocclusion were corrected and an increase in the posterior airway space (PAS) was observed. Pretreatment and posttreatment dynamic magnetic resonance imaging (MRI) revealed that tongue tip was retruded behind the incisors and contact of the tongue with the palate increased. It was also determined that the anterior and middle portions descended, whereas the posterior portion was elevated at all stages. Advancement of the mandible, correction of open bite, and an increase in PAS affected not only the tongue posture and deglutitive movements, but also the breathing pattern of the patient.

Intravenous contrast-enhanced dynamic MR urography: Diagnosis of vesicoureteral reflux during bladder filling with time-signal intensity curves.

Original Article J Magn Reson Imaging , Volume 24, Issue 2, 2006, Pages 349-355

Abstract

To evaluate the time-signal intensity (SI) curves generated from intravenous (IV) gadodiamide-enhanced dynamic magnetic resonance (MR) urographic scans for identifying vesicoureteral reflux (VUR) during bladder filling. MR urographic studies of children were retrospectively reviewed, and 52 ureterorenal units of 26 patients (15 females and 11 males, mean age = 5.5 years) who had also undergone voiding cystourethrographic (VCUG) examination were included in this study. The patients were examined on a 1.5T scanner. For functional MR urography and to generate time-SI curves, we used a post IV contrast-enhanced two-dimensional (2D) fast field echo (FFE) sequence (TR = 17 msec, TE = 3.2 msec, flip angle (FA) = 90 degrees ) in the coronal plane. MR urographic time-SI curves that demonstrated a prompt and concave fall of the initial third phase followed by intermittent or constantly increasing SI peaks above the baseline from which the second phase starts were considered to have VUR. We compared the differences in time-SI curves between the control group and patients with VUR during bladder filling. Twelve ureterorenal units of eight patients (four bilateral and four unilateral) had VUR during bladder filling on VCUG. The time-SI curves of these patients showed intermittent (N = 8 ureterorenal units), and constantly increasing (N = 4 ureterorenal units) SI peaks consistent with VUR. One patient also had bilateral abnormal time-SI curves suggesting VUR despite the normal VCUG study. In the control group, 25 units had normal triphase time-SI curves, six renal units had urinary dilatation with good washout after diuretic injection, and four renal units had upper urinary dilatation without contrast washout, while five renal units did not show any function. None of the patients in the control group revealed distortion in the time-SI curve. The differences in time-SI curves patterns between the control group and patients with VUR during bladder filling were statistically significant (P < 0.001). After a prompt and concave decrease of the initial third phase of the time-SI curve, intermittent spikes or a constant rise in SI above the baseline suggest the existence of VUR.


Özet

To evaluate the time-signal intensity (SI) curves generated from intravenous (IV) gadodiamide-enhanced dynamic magnetic resonance (MR) urographic scans for identifying vesicoureteral reflux (VUR) during bladder filling. MR urographic studies of children were retrospectively reviewed, and 52 ureterorenal units of 26 patients (15 females and 11 males, mean age = 5.5 years) who had also undergone voiding cystourethrographic (VCUG) examination were included in this study. The patients were examined on a 1.5T scanner. For functional MR urography and to generate time-SI curves, we used a post IV contrast-enhanced two-dimensional (2D) fast field echo (FFE) sequence (TR = 17 msec, TE = 3.2 msec, flip angle (FA) = 90 degrees ) in the coronal plane. MR urographic time-SI curves that demonstrated a prompt and concave fall of the initial third phase followed by intermittent or constantly increasing SI peaks above the baseline from which the second phase starts were considered to have VUR. We compared the differences in time-SI curves between the control group and patients with VUR during bladder filling. Twelve ureterorenal units of eight patients (four bilateral and four unilateral) had VUR during bladder filling on VCUG. The time-SI curves of these patients showed intermittent (N = 8 ureterorenal units), and constantly increasing (N = 4 ureterorenal units) SI peaks consistent with VUR. One patient also had bilateral abnormal time-SI curves suggesting VUR despite the normal VCUG study. In the control group, 25 units had normal triphase time-SI curves, six renal units had urinary dilatation with good washout after diuretic injection, and four renal units had upper urinary dilatation without contrast washout, while five renal units did not show any function. None of the patients in the control group revealed distortion in the time-SI curve. The differences in time-SI curves patterns between the control group and patients with VUR during bladder filling were statistically significant (P < 0.001). After a prompt and concave decrease of the initial third phase of the time-SI curve, intermittent spikes or a constant rise in SI above the baseline suggest the existence of VUR.

Thin-section axial multidetector computed tomography and multiplanar reformatted imaging of children with suspected foreign-body aspiration: Is virtual bronchoscopy overemphasized?

Original Article Acta Radiol, Volume 47, Issue 7, 2006, Pages 746-751

Abstract

Purpose: To determine the added value of multidetector computed tomography (MDCT)-assisted virtual bronchoscopy (VB) to axial MDCT and multiplanar reformatted (MPR) imaging with respect to conventional bronchoscopy in the evaluation of children with suspected foreign-body aspiration (FBA). Material and Methods: Twenty-one consecutive children (14 male, seven female, age 8 months–7 years, mean age 3.5 years) presenting with the suspicion of FBA were examined with 16-slice MDCT using 100–120 kV, 30–50 mA, 1-mm section thickness, 1.2 pitch ratio, and 0.6–1.0-mm reconstruction interval. Before CT examinations, chest radiographies were also obtained in all cases. VB and MPR imaging were carried out after MDCT examinations. Results: Nine foreign bodies were identified by gold-standard conventional broncho- scopy. VB, thin-section axial MDCT, and MPR images identified eight of nine foreign bodies. CT scans with MPR images and VB did not reveal a chronic foreign body; and, in one patient, endobronchial mucous was diagnosed as the foreign body. The sensitivity, specificity, and accuracy of thin-section axial MDCT and MPR images alone in the diagnosis of FBA were 88.9%, 91.7%, and 90.5%, respectively. Results were the same as those obtained when VB was also included. Conclusion: MDCT with VB and axial/MPR images provide equally valuable information in children with suspected foreign-body aspiration and prevent unnecessary conventional bronchoscopic examinations. However, VB increases total examination time and cost, and it does not provide additional information over MPR images in the evaluation of foreign-body aspiration.


Özet

Purpose: To determine the added value of multidetector computed tomography (MDCT)-assisted virtual bronchoscopy (VB) to axial MDCT and multiplanar reformatted (MPR) imaging with respect to conventional bronchoscopy in the evaluation of children with suspected foreign-body aspiration (FBA). Material and Methods: Twenty-one consecutive children (14 male, seven female, age 8 months–7 years, mean age 3.5 years) presenting with the suspicion of FBA were examined with 16-slice MDCT using 100–120 kV, 30–50 mA, 1-mm section thickness, 1.2 pitch ratio, and 0.6–1.0-mm reconstruction interval. Before CT examinations, chest radiographies were also obtained in all cases. VB and MPR imaging were carried out after MDCT examinations. Results: Nine foreign bodies were identified by gold-standard conventional broncho- scopy. VB, thin-section axial MDCT, and MPR images identified eight of nine foreign bodies. CT scans with MPR images and VB did not reveal a chronic foreign body; and, in one patient, endobronchial mucous was diagnosed as the foreign body. The sensitivity, specificity, and accuracy of thin-section axial MDCT and MPR images alone in the diagnosis of FBA were 88.9%, 91.7%, and 90.5%, respectively. Results were the same as those obtained when VB was also included. Conclusion: MDCT with VB and axial/MPR images provide equally valuable information in children with suspected foreign-body aspiration and prevent unnecessary conventional bronchoscopic examinations. However, VB increases total examination time and cost, and it does not provide additional information over MPR images in the evaluation of foreign-body aspiration.

Real time balanced turbo field echo Cine-MRI in the analysis of deglutition events and tranit times

Original Article J Oral Rehabil , Volume 33, Issue 9, 2006, Pages 646-653

Abstract

Investigation of swallowing is an important part of oral diagnosis. It usually plays a role in the aetiology of some orofacial deformities and open-bite as well as in the relapse of treated open-bite patients. In recent years, the movements of the anatomical structures that participate in deglutition have been investigated by several methods such as cineradiography, electromyography, electropalatography, electromagnetic articulography and ultrasonography. However, all these techniques have various disadvantages. Recently, dynamic magnetic resonance imaging has become available in the evaluation of swallowing function. In this study we intended to present this new technique to the dental literature and aimed to obtain dynamic images of the deglutition process. We also compared the timing of events in subjects with anterior open-bite and normal overbite during swallowing 10 mL water.


Özet

Investigation of swallowing is an important part of oral diagnosis. It usually plays a role in the aetiology of some orofacial deformities and open-bite as well as in the relapse of treated open-bite patients. In recent years, the movements of the anatomical structures that participate in deglutition have been investigated by several methods such as cineradiography, electromyography, electropalatography, electromagnetic articulography and ultrasonography. However, all these techniques have various disadvantages. Recently, dynamic magnetic resonance imaging has become available in the evaluation of swallowing function. In this study we intended to present this new technique to the dental literature and aimed to obtain dynamic images of the deglutition process. We also compared the timing of events in subjects with anterior open-bite and normal overbite during swallowing 10 mL water.

Initial effects of the tounge crib on tounge movements during deglutition: A cine-magnetic resonance imaging study

Original Article Angle Orthod, Volume 76, Issue 3, 2006, Pages 400-405

Abstract

The objective of this study was to investigate the initial effects of a tongue crib on tongue movements during deglutition by using real time balanced turbo field echo (B-TFE) Cine-MR imaging. A total of 21 patients were evaluated in this study. The open-bite group (OBG) consisted of 11 patients (seven girls, four boys) who had a mean age of 11.09 +/- 2.02 years and a mean overbite of -5.14 +/- 1.83 mm. These patients were evaluated initially (T1) and while wearing a tongue crib (T2). A total of 10 patients (five girls, five boys) with a mean age of 14.5 +/- 2.6 years and with a mean overbite of 1.6 +/- 0.5 mm served as controls (CG), and only initial records were obtained from these patients. T2 was compared with T1 and CG. T1 was also compared with CG. We evaluated deglutition during three stages matching oral (1), pharyngeal (2), and esophageal (3) stages. Our results indicated that the tongue's tip positioned more posteriorly when the crib was in place (T2) compared with both T1 and CG; the anterior portion of the tongue's dorsum was at a lower position in T2 compared with both T1 and CG at stage 3; the midportion of the tongue's dorsum was at a lower position in T2 than in T1 and CG at stages 1 and 2. To compensate for the posterior position of the tongue's tip (caused by the tongue crib), adaptive changes occurred in the anterior and midportions of the dorsum of the tongue.


Özet

The objective of this study was to investigate the initial effects of a tongue crib on tongue movements during deglutition by using real time balanced turbo field echo (B-TFE) Cine-MR imaging. A total of 21 patients were evaluated in this study. The open-bite group (OBG) consisted of 11 patients (seven girls, four boys) who had a mean age of 11.09 +/- 2.02 years and a mean overbite of -5.14 +/- 1.83 mm. These patients were evaluated initially (T1) and while wearing a tongue crib (T2). A total of 10 patients (five girls, five boys) with a mean age of 14.5 +/- 2.6 years and with a mean overbite of 1.6 +/- 0.5 mm served as controls (CG), and only initial records were obtained from these patients. T2 was compared with T1 and CG. T1 was also compared with CG. We evaluated deglutition during three stages matching oral (1), pharyngeal (2), and esophageal (3) stages. Our results indicated that the tongue's tip positioned more posteriorly when the crib was in place (T2) compared with both T1 and CG; the anterior portion of the tongue's dorsum was at a lower position in T2 compared with both T1 and CG at stage 3; the midportion of the tongue's dorsum was at a lower position in T2 than in T1 and CG at stages 1 and 2. To compensate for the posterior position of the tongue's tip (caused by the tongue crib), adaptive changes occurred in the anterior and midportions of the dorsum of the tongue.

RADIOLOGICAL EVALUATION OF CRANIOSPINAL INVOLVEMENT IN VON HIPPEL LINDAU SYNDROME

Original Article Diagnostic and Interventional Radiology (Tanısal ve Girişimsel Radyoloji), Volume *, Issue -, 2007, Pages -

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Efficacy of in vivo 31Phosphorus Magnetic Resonance Spectroscopy in Differentiation and Staging of Adult Human Brain Tumors

Original Article The neuroradiology journal, Volume *, Issue -, 2007, Pages -

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Dysembrioplastic neuroepithelial tumors: Proton MR spectroscopy, diffusion and perfusion characteristics

Original Article Neuroradiology , Volume 49, Issue 10, 2007, Pages 805-812

Abstract

Introduction We describe the magnetic resonance (MR) imaging characteristics of dysembryoplastic neuroepithelial tumors (DNT) and discuss their differential diagnosis. Material and methods Proton MR spectroscopy (TE 30 and 136 ms), diffusion-weighted and perfusion images were retrospectively evaluated in 22 patients with pathologically proven DNT (17 male and 5 female, mean age 18.7 years) and 14 control subjects (10 male and 4 female, mean age 16.9 years). The results from the DNT patients and from the control subjects were compared using an independent sample t-test and the degree of correlation was tested by Pearson’s correlation. Results All DNTs were solitary and in a supratentorial cortical or subcortical location (ten temporal, eight frontal and four parietal). They had low-signal on T1-weighted images and high-signal on T2-weighted images without a prominent mass effect. Additionally a cystic appearance (six patients, 27.3%), cortical dysplasia (six patients, 27.3%) and contrast enhancement (four patients, 18.2%) were also noted. No significant differences were detected in NAA/Cho, NAA/Cr, NAA/Cho+Cr or Cho/Cr ratios between DNT and normal brain. DNTs had a significantly higher mI/Cr ratio and apparent diffusion coefficient (ADC) values and lower cerebral blood values than normal parenchyma (P?<?0.001). ADC had the highest correlation with the diagnosis of DNT (r?=?0.996) followed by relative cerebral blood volume (rCBV) (r?=?-0.883) and mI/Cr ratio (r?=?0.663). Conclusion Proton MR spectroscopy, diffusion-weighted and perfusion imaging characteristics of DNTs provide additional information to their MR imaging findings. The MR spectrum showing a slight increase in mI/Cr ratio, and higher ADC and lower rCBV values than normal parenchyma help to differentiate DNTs from other cortical tumors, which had higher rCBV and lower ADC values than DNTs.


Özet

Introduction We describe the magnetic resonance (MR) imaging characteristics of dysembryoplastic neuroepithelial tumors (DNT) and discuss their differential diagnosis. Material and methods Proton MR spectroscopy (TE 30 and 136 ms), diffusion-weighted and perfusion images were retrospectively evaluated in 22 patients with pathologically proven DNT (17 male and 5 female, mean age 18.7 years) and 14 control subjects (10 male and 4 female, mean age 16.9 years). The results from the DNT patients and from the control subjects were compared using an independent sample t-test and the degree of correlation was tested by Pearson’s correlation. Results All DNTs were solitary and in a supratentorial cortical or subcortical location (ten temporal, eight frontal and four parietal). They had low-signal on T1-weighted images and high-signal on T2-weighted images without a prominent mass effect. Additionally a cystic appearance (six patients, 27.3%), cortical dysplasia (six patients, 27.3%) and contrast enhancement (four patients, 18.2%) were also noted. No significant differences were detected in NAA/Cho, NAA/Cr, NAA/Cho+Cr or Cho/Cr ratios between DNT and normal brain. DNTs had a significantly higher mI/Cr ratio and apparent diffusion coefficient (ADC) values and lower cerebral blood values than normal parenchyma (P?<?0.001). ADC had the highest correlation with the diagnosis of DNT (r?=?0.996) followed by relative cerebral blood volume (rCBV) (r?=?-0.883) and mI/Cr ratio (r?=?0.663). Conclusion Proton MR spectroscopy, diffusion-weighted and perfusion imaging characteristics of DNTs provide additional information to their MR imaging findings. The MR spectrum showing a slight increase in mI/Cr ratio, and higher ADC and lower rCBV values than normal parenchyma help to differentiate DNTs from other cortical tumors, which had higher rCBV and lower ADC values than DNTs.

MRI in long term evaluation of reconstructed hind-feet of land-mine trauma patients.

Original Article Eur J Radiol , Volume 63, Issue 2, 2007, Pages 270-273

Abstract

INTRODUCTION: The purpose of this study was to assess the flap reconstructed hind feet of patients with MRI who were traumatized by land-mine. MATERIALS AND METHODS: T1 and T2 weighted images were obtained in 7 patients, 12 months later the reconstruction of their hind feet by myocutaneous flaps after land-mine trauma. RESULTS: In all patients T2 signal intensities of the myocutaneous flaps were slightly high compared to normal undisturbed muscle. Slight vascular engorgement was noted in the vicinity of the flaps in all cases. There were ankle joint ankylose (n=1), tarsal coalition (n=3), sklerosis within the calcaneus (n=1), bone cortex irregularities (n=3), absence of calcaneus (n=4), deformity in talus and bone marrow edema (n=1), navicular edema (n=2), remodeling in the superior aspect of talus neck (n=2), absence of talus (n=2), talocalcaneal ankylose (n=1), small collection in the superior aspect of flap (n=1), drenage canules (n=1). CONCLUSION: In reconstructed hind feet by myocutaneus flaps done for land-mine traumas, MRI presents useful information by displaying detailed anatomy of the flaps, bones, joints, soft tissues and associated complications.


Özet

INTRODUCTION: The purpose of this study was to assess the flap reconstructed hind feet of patients with MRI who were traumatized by land-mine. MATERIALS AND METHODS: T1 and T2 weighted images were obtained in 7 patients, 12 months later the reconstruction of their hind feet by myocutaneous flaps after land-mine trauma. RESULTS: In all patients T2 signal intensities of the myocutaneous flaps were slightly high compared to normal undisturbed muscle. Slight vascular engorgement was noted in the vicinity of the flaps in all cases. There were ankle joint ankylose (n=1), tarsal coalition (n=3), sklerosis within the calcaneus (n=1), bone cortex irregularities (n=3), absence of calcaneus (n=4), deformity in talus and bone marrow edema (n=1), navicular edema (n=2), remodeling in the superior aspect of talus neck (n=2), absence of talus (n=2), talocalcaneal ankylose (n=1), small collection in the superior aspect of flap (n=1), drenage canules (n=1). CONCLUSION: In reconstructed hind feet by myocutaneus flaps done for land-mine traumas, MRI presents useful information by displaying detailed anatomy of the flaps, bones, joints, soft tissues and associated complications.

Efficacy of in vivo 31 phosphorus magnetic resonance spectroscopy in differentiation and staging of adult human brain tumors.

Original Article Neuroradiol J , Volume 20, Issue 6, 2007, Pages 646-655

Abstract

The aim of this study was to evaluate the efficacy of (31)P magnetic resonance spectroscopy ((31)P-MRS) in the differentiation and staging of brain tumors. Fifteen volunteers and 44 patients with brain tumors (14 meningiomas, 13 low- and 17 high-grade gliomas) were prospectively evaluated by (31)P-MRS. The pH (r=0.493, p<0.001), [Mg(+2)] (r=0.850, p<0.001) PME/?-ATP (r=0.776, p<0.001), PDE/?-ATP (r=-0.569, p<0.001) and (PCr+ß-ATP)/Pi ratios were well correlated with tumor differentiation. High-grade gliomas had significantly higher pH (r=0.912, p<0.001) and [Mg(+2)] (r=0.855, p<0.001) and PME/?-ATP (r=0.894, p<0.001) ratio, and lower PCr/?-ATP (r=-0.959, p<0.001), Pi/?-ATP (r=-0.788, p<0.001) and PDE/?-ATP ratios (r=-0.968, p<0.001) than those of low-grade gliomas. Changes in (31)P-MRS parameters by the degree of malignancy are good indicators of increased anaerobic metabolism and hypoxia of tumoral tissue to compensate intratumoral energy deficiency. (31)P-MRS parameters are very useful for grading and differentiation of brain tumors.


Özet

The aim of this study was to evaluate the efficacy of (31)P magnetic resonance spectroscopy ((31)P-MRS) in the differentiation and staging of brain tumors. Fifteen volunteers and 44 patients with brain tumors (14 meningiomas, 13 low- and 17 high-grade gliomas) were prospectively evaluated by (31)P-MRS. The pH (r=0.493, p<0.001), [Mg(+2)] (r=0.850, p<0.001) PME/?-ATP (r=0.776, p<0.001), PDE/?-ATP (r=-0.569, p<0.001) and (PCr+ß-ATP)/Pi ratios were well correlated with tumor differentiation. High-grade gliomas had significantly higher pH (r=0.912, p<0.001) and [Mg(+2)] (r=0.855, p<0.001) and PME/?-ATP (r=0.894, p<0.001) ratio, and lower PCr/?-ATP (r=-0.959, p<0.001), Pi/?-ATP (r=-0.788, p<0.001) and PDE/?-ATP ratios (r=-0.968, p<0.001) than those of low-grade gliomas. Changes in (31)P-MRS parameters by the degree of malignancy are good indicators of increased anaerobic metabolism and hypoxia of tumoral tissue to compensate intratumoral energy deficiency. (31)P-MRS parameters are very useful for grading and differentiation of brain tumors.

Central neurocytoma: proton MR spectroscopy and diffusion weighted MR imaging findings

Original Article Magn Reson Imaging, Volume 27, Issue 3, 2008, Pages 434-440

Abstract

PURPOSE: To present proton magnetic resonance spectroscopy and diffusion-weighted imaging (DWI) findings of central neurocytoma (CN). METHODS AND MATERIALS: Imaging findings of seven patients with the histopathological diagnosis of CN (five male and two female; age range, 21-28 years of age) were evaluated retrospectively. In addition to conventional magnetic resonance imaging features, we also assessed the metabolite ratios and tumor normalized apparent diffusion coefficient (NADC), which was calculated by dividing the tumor apparent diffusion coefficient (ADC) values by normal ADC. Approval from our institutional review board was obtained for this review. RESULTS: The tumor choline/creatine ratios were 5.17+/-2.38, while N-acetyl aspartate/choline and N-acetyl aspartate/creatine ratios were 0.33+/-0.15 and 1.84+/-1.38, respectively. On DWI, tumors had heterogeneous hyperintense appearances when compared with the contralateral parietal lobe white matter and tumor NADC values were 0.63+/-0.05. CONCLUSION: Significantly increased choline/creatine and decreased N-acetyl aspartate/choline ratios with lower NADC values in CN resemble high-grade gliomas and complicate the diagnosis. Familiarity its physiologic features would help to presurgical diagnosis of ventricular and exraventricular CNs.


Özet

PURPOSE: To present proton magnetic resonance spectroscopy and diffusion-weighted imaging (DWI) findings of central neurocytoma (CN). METHODS AND MATERIALS: Imaging findings of seven patients with the histopathological diagnosis of CN (five male and two female; age range, 21-28 years of age) were evaluated retrospectively. In addition to conventional magnetic resonance imaging features, we also assessed the metabolite ratios and tumor normalized apparent diffusion coefficient (NADC), which was calculated by dividing the tumor apparent diffusion coefficient (ADC) values by normal ADC. Approval from our institutional review board was obtained for this review. RESULTS: The tumor choline/creatine ratios were 5.17+/-2.38, while N-acetyl aspartate/choline and N-acetyl aspartate/creatine ratios were 0.33+/-0.15 and 1.84+/-1.38, respectively. On DWI, tumors had heterogeneous hyperintense appearances when compared with the contralateral parietal lobe white matter and tumor NADC values were 0.63+/-0.05. CONCLUSION: Significantly increased choline/creatine and decreased N-acetyl aspartate/choline ratios with lower NADC values in CN resemble high-grade gliomas and complicate the diagnosis. Familiarity its physiologic features would help to presurgical diagnosis of ventricular and exraventricular CNs.

P6-1 Effect of vagus nerve stimulation on EEG and seizure frequency in children with intractable epilepsy

Original Article Clinical Neurophysiology, Volume *, Issue -, 2010, Pages -

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Corpus callosum: normal imaging appearance, variants and pathologic conditions

Original Article Journal of medical imaging and radiation oncology, Volume *, Issue -, 2010, Pages -

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Multifocal peliosis hepatis: MR and diffusion-weighted MR-imaging findings of an atypical case

Original Article Upsala journal of medical sciences, Volume *, Issue -, 2010, Pages -

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Morphometric assessment of corpus callosum and cerebral hemispheres with magnetic resonance imaging

Original Article Balkan Medical Journal , Volume 27, Issue 3, 2010, Pages 378-384

Abstract

Objective: In this study, our purpose was to assess the relationship between handedness, footedness and the morphological differences of certain intracranial structures on MR images. Material and Methods: 63 healthy male and 52 healthy female individuals were included in the study. In each subject, 16 measurements of intracranial structures were taken on MR images. Area of corpus callosum, also left and right cerebral hemispheres, length of CC, width of genu (r1), truncus (r2), isthmus (r3) and splenium of CC (r4) and width of corresponding cerebral hemisphere were measured. Results: There was a statistically significant difference in R3 (width of the corresponding cerebral hemisphere to r3) distance between those using their right feet and those using their left feet. Angle of genu in right-handed people was greater in males than in females. Angle of genu in cases using the left foot was greater in females than in males for standing on one leg. Conclusion: Morphometric assessment of CC with MR imaging related to handedness and footedness may be useful in demonstrating the relationship between callosal morphology, gender differences and extremity preference in neuroscience.


Özet

Objective: In this study, our purpose was to assess the relationship between handedness, footedness and the morphological differences of certain intracranial structures on MR images. Material and Methods: 63 healthy male and 52 healthy female individuals were included in the study. In each subject, 16 measurements of intracranial structures were taken on MR images. Area of corpus callosum, also left and right cerebral hemispheres, length of CC, width of genu (r1), truncus (r2), isthmus (r3) and splenium of CC (r4) and width of corresponding cerebral hemisphere were measured. Results: There was a statistically significant difference in R3 (width of the corresponding cerebral hemisphere to r3) distance between those using their right feet and those using their left feet. Angle of genu in right-handed people was greater in males than in females. Angle of genu in cases using the left foot was greater in females than in males for standing on one leg. Conclusion: Morphometric assessment of CC with MR imaging related to handedness and footedness may be useful in demonstrating the relationship between callosal morphology, gender differences and extremity preference in neuroscience.

Diuretic-induced renal length changes in the estimation of renal function with MR urography

Original Article AJR Am J Roentgenol, Volume 194, Issue 2, 2010, Pages W218-W220

Abstract

OBJECTIVE. The objective of this study was to evaluate whether administration of a diuretic agent in MR urography has an effect on renal length and to determine whether the increase in length can be used for the assessment of renal function. CONCLUSION. Renal length may change after diuretic injection, and these changes correlate with renal function.


Özet

OBJECTIVE. The objective of this study was to evaluate whether administration of a diuretic agent in MR urography has an effect on renal length and to determine whether the increase in length can be used for the assessment of renal function. CONCLUSION. Renal length may change after diuretic injection, and these changes correlate with renal function.

Pediatric abdominal masses: diagnostic accuracy of diffusion weighted MRI

Original Article Magn Reson Imaging, Volume 28, Issue 5, 2010, Pages 629-636

Abstract

Purpose: To retrospectively identify apparent diffusion coefficient (ADC) values of pediatric abdominal mass lesions, to determine whether measured ADC of the lesions and signal intensity on diffusion-weighted (DW) images allow discrimination between benign and malignant mass lesions. Materials and Methods: Approval for this retrospective study was obtained from the institutional review board. Children with abdominal mass lesions, who were examined by DW magnetic resonance imaging (MRI) were included in this study. DW MR images were obtained in the axial plane by using a non breath-hold single-shot spin-echo sequence on a 1.5-T MR scanner. ADCs were calculated for each lesion. ADC values were compared with Mann–Whitney U test. Receiver operating characteristic curve analysis was performed to determine cut-off values for ADC. The results of visual assessment on b800 images and ADC map images were compared with chi-square test. Results: Thirty-one abdominal mass lesions (16 benign, 15 malignant) in 26 patients (15 girls, 11 boys, ranging from 2 days to 17 years with 6.9 years mean) underwent MRI. Benign lesions had significantly higher ADC values than malignant ones (Pb.001). The mean ADCs of malignant lesions were 0.84±1.7×10-3 mm2/s, while the mean ADCs of the benign ones were 2.28±1.00×10-3 mm2/s. With respect to cutoff values of ADC: 1.11×10-3 mm2/s, sensitivity and negative predictive values were 100%, specificity was 78.6% and positive predictive value was 83.3%. For b800 and ADC map images, there were statistically significant differences on visual assessment. All malignant lesions had variable degrees of high signal intensity whereas eight of the 16 benign ones had low signal intensities on b800 images (Pb.001). On ADC map images, all malignant lesions were hypointense and most of the benign ones (n=11, 68.7%) were hyperintense (Pb.001). Conclusion: DW imaging can be used for reliable discrimination of benign and malignant pediatric abdominal mass lesions based on considerable differences in the ADC values and signal intensity changes.


Özet

Purpose: To retrospectively identify apparent diffusion coefficient (ADC) values of pediatric abdominal mass lesions, to determine whether measured ADC of the lesions and signal intensity on diffusion-weighted (DW) images allow discrimination between benign and malignant mass lesions. Materials and Methods: Approval for this retrospective study was obtained from the institutional review board. Children with abdominal mass lesions, who were examined by DW magnetic resonance imaging (MRI) were included in this study. DW MR images were obtained in the axial plane by using a non breath-hold single-shot spin-echo sequence on a 1.5-T MR scanner. ADCs were calculated for each lesion. ADC values were compared with Mann–Whitney U test. Receiver operating characteristic curve analysis was performed to determine cut-off values for ADC. The results of visual assessment on b800 images and ADC map images were compared with chi-square test. Results: Thirty-one abdominal mass lesions (16 benign, 15 malignant) in 26 patients (15 girls, 11 boys, ranging from 2 days to 17 years with 6.9 years mean) underwent MRI. Benign lesions had significantly higher ADC values than malignant ones (Pb.001). The mean ADCs of malignant lesions were 0.84±1.7×10-3 mm2/s, while the mean ADCs of the benign ones were 2.28±1.00×10-3 mm2/s. With respect to cutoff values of ADC: 1.11×10-3 mm2/s, sensitivity and negative predictive values were 100%, specificity was 78.6% and positive predictive value was 83.3%. For b800 and ADC map images, there were statistically significant differences on visual assessment. All malignant lesions had variable degrees of high signal intensity whereas eight of the 16 benign ones had low signal intensities on b800 images (Pb.001). On ADC map images, all malignant lesions were hypointense and most of the benign ones (n=11, 68.7%) were hyperintense (Pb.001). Conclusion: DW imaging can be used for reliable discrimination of benign and malignant pediatric abdominal mass lesions based on considerable differences in the ADC values and signal intensity changes.

Tongue movements in patients with skeletal Class III malocclusions evaluated with real-time balanced turbo field echo cine magnetic resonance imaging

Original Article Am J Orthod Dentofacial Orthop, Volume 139, Issue 5, 2011, Pages e405-e414

Abstract

INTRODUCTION: The aim of this study was to evaluate the position and movements of the tongue in patients with skeletal Class III malocclusion. METHODS: Sixty-six patients (31 male, 35 female) with Class III malocclusion were divided into 3 groups according to cephalometric analysis. The first group comprised 23 patients (13 male, 10 female) with mandibular prognathism, the second group comprised 21 patients (9 male, 12 female) with maxillary retrognathism, and the third group comprised 22 patients (9 male, 13 female) with both maxillary retrognathism and mandibular prognathism. Twenty-two skeletal Class I patients (10 male, 12 female) were also included as the control group. RESULTS: Dentofacial morphology affects the position and the movements of the tongue during deglutition. Contact of the anterior portion of the tongue with the rugae area of the hard palate decreased in the Class III malocclusion groups. The posterior portion of the dorsal tongue was positioned more inferiorly, and the root of the tongue was positioned more inferiorly and anteriorly in patients with Class III malocclusion than in the control group. The tip of the tongue was also in a more anterior position in the Class III groups. When the deglutition stages were evaluated, we observed that the manner of bolus transfer was different in patients with skeletal Class III malocclusion than in those with skeletal Class I malocclusion. CONCLUSIONS: Tongue posture is affected by dentofacial structures, and adaptive changes occur in the tip, dorsum, and root of the tongue. Deglutitive tongue movements in patients with skeletal Class III malocclusion are also different from those with skeletal Class I malocclusion.


Özet

INTRODUCTION: The aim of this study was to evaluate the position and movements of the tongue in patients with skeletal Class III malocclusion. METHODS: Sixty-six patients (31 male, 35 female) with Class III malocclusion were divided into 3 groups according to cephalometric analysis. The first group comprised 23 patients (13 male, 10 female) with mandibular prognathism, the second group comprised 21 patients (9 male, 12 female) with maxillary retrognathism, and the third group comprised 22 patients (9 male, 13 female) with both maxillary retrognathism and mandibular prognathism. Twenty-two skeletal Class I patients (10 male, 12 female) were also included as the control group. RESULTS: Dentofacial morphology affects the position and the movements of the tongue during deglutition. Contact of the anterior portion of the tongue with the rugae area of the hard palate decreased in the Class III malocclusion groups. The posterior portion of the dorsal tongue was positioned more inferiorly, and the root of the tongue was positioned more inferiorly and anteriorly in patients with Class III malocclusion than in the control group. The tip of the tongue was also in a more anterior position in the Class III groups. When the deglutition stages were evaluated, we observed that the manner of bolus transfer was different in patients with skeletal Class III malocclusion than in those with skeletal Class I malocclusion. CONCLUSIONS: Tongue posture is affected by dentofacial structures, and adaptive changes occur in the tip, dorsum, and root of the tongue. Deglutitive tongue movements in patients with skeletal Class III malocclusion are also different from those with skeletal Class I malocclusion.

Diffusion-weighted imaging in the characterization of focal liver lesions: efficacy of visual assessment

Original Article J Comput Assist Tomogr, Volume 35, Issue 3, 2011, Pages 326-331

Abstract

OBJECTIVES: The objective of the study was to assess the value of visual assessment of signal intensities on b800 diffusion-weighted images and apparent diffusion coefficient (ADC) maps in differentiation of benign and malignant focal liver lesions (FLLs). METHODS: Approval for this retrospective study was obtained from the institutional review board. One hundred forty-three FLLs in 65 patients (38 women, 27 men; mean age, 50.8 years) underwent magnetic resonance (MR) imaging and diffusion-weighted imaging (DWI) with a respiratory-triggered single-shot echo-planar imaging sequence. Focal liver lesions were evaluated visually according to the signal intensities on b800 and ADC map images, and ADC values were also calculated. The conventional MR imaging, follow-up imaging findings, and histopathologic data were regarded as gold standard. Normal distribution was assessed with Kolmogorov-Smirnov test. The accuracies of visual assessment and ADC values in differentiating benign and malignant FLLs were assessed with the Student t test, and threshold values were determined with receiver operating characteristic curve analysis. RESULTS: By using a cutoff value of 1.21 × 10?³ mm²/s, ADC had a sensitivity of 100%, a specificity of 89.3%, and an accuracy of 92.3% in the discrimination of malignant FLLs. With the visual assessment of the DWIs and ADC maps, malignant lesions were differentiated from benign ones, with 100% sensitivity, 92.2% specificity, and 94.4% accuracy. Although some benign lesions were interpreted as malignant, no malignant lesion was determined as benign in visual assessment. CONCLUSIONS: Most FLLs are benign ones such as hemangiomas and cysts, which can be readily and practically characterized only by using visual assessment of DWIs without requiring time-consuming conventional and dynamic contrast-enhanced imaging sequences. Some benign lesions that are falsely interpreted as malignant can be further characterized by using conventional and contrast-enhanced MR studies.


Özet

OBJECTIVES: The objective of the study was to assess the value of visual assessment of signal intensities on b800 diffusion-weighted images and apparent diffusion coefficient (ADC) maps in differentiation of benign and malignant focal liver lesions (FLLs). METHODS: Approval for this retrospective study was obtained from the institutional review board. One hundred forty-three FLLs in 65 patients (38 women, 27 men; mean age, 50.8 years) underwent magnetic resonance (MR) imaging and diffusion-weighted imaging (DWI) with a respiratory-triggered single-shot echo-planar imaging sequence. Focal liver lesions were evaluated visually according to the signal intensities on b800 and ADC map images, and ADC values were also calculated. The conventional MR imaging, follow-up imaging findings, and histopathologic data were regarded as gold standard. Normal distribution was assessed with Kolmogorov-Smirnov test. The accuracies of visual assessment and ADC values in differentiating benign and malignant FLLs were assessed with the Student t test, and threshold values were determined with receiver operating characteristic curve analysis. RESULTS: By using a cutoff value of 1.21 × 10?³ mm²/s, ADC had a sensitivity of 100%, a specificity of 89.3%, and an accuracy of 92.3% in the discrimination of malignant FLLs. With the visual assessment of the DWIs and ADC maps, malignant lesions were differentiated from benign ones, with 100% sensitivity, 92.2% specificity, and 94.4% accuracy. Although some benign lesions were interpreted as malignant, no malignant lesion was determined as benign in visual assessment. CONCLUSIONS: Most FLLs are benign ones such as hemangiomas and cysts, which can be readily and practically characterized only by using visual assessment of DWIs without requiring time-consuming conventional and dynamic contrast-enhanced imaging sequences. Some benign lesions that are falsely interpreted as malignant can be further characterized by using conventional and contrast-enhanced MR studies.

Tongue movements in patients with skeletal Class II malocclusion evaluated with real-time balanced turbo field echo cine magnetic resonance imaging

Original Article Am J Orthod Dentofacial Orthop, Volume 139, Issue 5, 2011, Pages e415-e425

Abstract

INTRODUCTION: The aim of this study was to evaluate the deglutitive tongue movements in patients with skeletal Class II malocclusion. METHODS: Fifty-nine patients (26 male, 33 female) with skeletal Class II relationship were divided into 3 groups according to cephalometric analysis. Group 1 (n = 19) had mandibular retrognathism, group 2 (n = 20) had maxillary prognathism, and group 3 (n = 20) had both mandibular retrognathism and maxillary prognathism. Twenty-two skeletal Class I patients (10 male, 12 female) were also included as the controls. RESULTS: In the mandibular retrusion group, the posterior portion of the dorsal tongue moved downward at stage 2 and upward at stage 3; the root of the dorsal tongue was in an inferior and anterior position at stage 2. In patients with both mandibular retrognathism and maxillary prognathism, the middle portion of the dorsal tongue was positioned superiorly at stage 3 relative to stage 1; the tongue tip was retruded at stage 3 relative to stages 1 and 2. In the control group, the middle portion of dorsal tongue was positioned superiorly at stage 3 relative to stages 1 and 2; the posterior portion of the tongue moved upward at stage 2 and downward at stage 3, and tongue-tip retrusion was observed at stage 2 relative to stage 1. Contact of the anterior portion of the tongue with the rugae area of the hard palate decreased in the Class II malocclusion groups relative to the control group. The middle portion of the dorsal tongue was positioned more superiorly in patients with Class II malocclusion during all stages of deglutition. The root of the tongue was more inferior and anterior, and the tongue tip was retruded in patients with Class II malocclusion compared with the control group. The posterior portion of the dorsal tongue was more inferiorly positioned in patients with mandibular retrusion than in the other Class II groups or the controls. In the third stage of deglutition, this portion of the tongue had a superior position in groups 2 and 3 relative to the control group. CONCLUSIONS: Dentofacial morphology affects the position and movements of the tongue during deglutition, and adaptive changes occur in the tip, dorsum, and root of the tongue. Deglutitive tongue movements in patients with a skeletal Class II relationship are different from those with a skeletal Class I relationship.


Özet

INTRODUCTION: The aim of this study was to evaluate the deglutitive tongue movements in patients with skeletal Class II malocclusion. METHODS: Fifty-nine patients (26 male, 33 female) with skeletal Class II relationship were divided into 3 groups according to cephalometric analysis. Group 1 (n = 19) had mandibular retrognathism, group 2 (n = 20) had maxillary prognathism, and group 3 (n = 20) had both mandibular retrognathism and maxillary prognathism. Twenty-two skeletal Class I patients (10 male, 12 female) were also included as the controls. RESULTS: In the mandibular retrusion group, the posterior portion of the dorsal tongue moved downward at stage 2 and upward at stage 3; the root of the dorsal tongue was in an inferior and anterior position at stage 2. In patients with both mandibular retrognathism and maxillary prognathism, the middle portion of the dorsal tongue was positioned superiorly at stage 3 relative to stage 1; the tongue tip was retruded at stage 3 relative to stages 1 and 2. In the control group, the middle portion of dorsal tongue was positioned superiorly at stage 3 relative to stages 1 and 2; the posterior portion of the tongue moved upward at stage 2 and downward at stage 3, and tongue-tip retrusion was observed at stage 2 relative to stage 1. Contact of the anterior portion of the tongue with the rugae area of the hard palate decreased in the Class II malocclusion groups relative to the control group. The middle portion of the dorsal tongue was positioned more superiorly in patients with Class II malocclusion during all stages of deglutition. The root of the tongue was more inferior and anterior, and the tongue tip was retruded in patients with Class II malocclusion compared with the control group. The posterior portion of the dorsal tongue was more inferiorly positioned in patients with mandibular retrusion than in the other Class II groups or the controls. In the third stage of deglutition, this portion of the tongue had a superior position in groups 2 and 3 relative to the control group. CONCLUSIONS: Dentofacial morphology affects the position and movements of the tongue during deglutition, and adaptive changes occur in the tip, dorsum, and root of the tongue. Deglutitive tongue movements in patients with a skeletal Class II relationship are different from those with a skeletal Class I relationship.

Effect of complete denture wearing on deglutition time: a cine-magnetic resonance imaging study

Original Article Journal of oral rehabilitation, Volume *, Issue -, 2012, Pages -

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HASTE diffusion-weighted MRI for the reliable detection of cholesteatoma

Original Article Diagn Interv Radiol, Volume *, Issue -, 2012, Pages -

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Magnetic resonance imaging predictors of surgical outcome in degenerative lumbal spinal stenosis

Original Article Jpn J Radiol, Volume 30, Issue 10, 2012, Pages 811-818

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HASTE diffusion-weighted MRI for the reliable detection of cholesteatoma

Original Article Diagn Interv Radiol. , Volume 18, Issue 2, 2012, Pages 153-158

Abstract

PURPOSE To assess the detection efficiency of Half-Fourier acquisition single-shot turbo spin-echo (HASTE) diffusion-weighted mag- netic resonance imaging (MRI) for cholesteatoma. MATERIALS AND METHODS A total of 21 patients with suspected primary (n=16) or re- current cholesteatoma (n=5) underwent MRI in a 1.5 Tesla scanner using an adapted protocol for cholesteatoma detec- tion that included a coronal HASTE diffusion-weighted MRI se- quence. The cholesteatoma diagnosis was based on evidence of a hyperintense lesion at b-1000 on diffusion-weighted im- ages. The imaging findings were correlated with findings from surgery or clinical evaluations in all patients. RESULTS HASTE diffusion-weighted MRI successfully detected 11 pri- mary and 5 recurrent lesions out of 17 cholesteatomas (sensi- tivity, 94.1%). One primary cholesteatoma with a diameter of 4–5 mm was missed. MRI of patients without cholesteatoma were correctly interpreted as negative for cholesteatoma (spe- cificity, 100%). The positive and negative predictive values for the HASTE diffusion-weighted MRI in detecting cholesteato- ma were 100% and 80%, respectively. CONCLUSION HASTE diffusion-weighted MRI offers great promise for chole- steatoma screening. The addition of this sequence to the pos- terior fossa MRI protocol may preclude unnecessary cholest- eatoma surgery.


Özet

PURPOSE To assess the detection efficiency of Half-Fourier acquisition single-shot turbo spin-echo (HASTE) diffusion-weighted mag- netic resonance imaging (MRI) for cholesteatoma. MATERIALS AND METHODS A total of 21 patients with suspected primary (n=16) or re- current cholesteatoma (n=5) underwent MRI in a 1.5 Tesla scanner using an adapted protocol for cholesteatoma detec- tion that included a coronal HASTE diffusion-weighted MRI se- quence. The cholesteatoma diagnosis was based on evidence of a hyperintense lesion at b-1000 on diffusion-weighted im- ages. The imaging findings were correlated with findings from surgery or clinical evaluations in all patients. RESULTS HASTE diffusion-weighted MRI successfully detected 11 pri- mary and 5 recurrent lesions out of 17 cholesteatomas (sensi- tivity, 94.1%). One primary cholesteatoma with a diameter of 4–5 mm was missed. MRI of patients without cholesteatoma were correctly interpreted as negative for cholesteatoma (spe- cificity, 100%). The positive and negative predictive values for the HASTE diffusion-weighted MRI in detecting cholesteato- ma were 100% and 80%, respectively. CONCLUSION HASTE diffusion-weighted MRI offers great promise for chole- steatoma screening. The addition of this sequence to the pos- terior fossa MRI protocol may preclude unnecessary cholest- eatoma surgery.

Radiological analysis of the triangular working zone during transforaminal endoscopic lumbar discectomy

Original Article Asian Spine J, Volume 6, Issue 2, 2012, Pages 98-104

Abstract

PURPOSE: The dimensions of the working zone for endoscopic lumbar discectomy should be evaluated by preoperative magnetic resonance images. The aim of this study was to analyze the angle of the roots, root area, and foraminal area. OVERVIEW OF LITERATURE: Few studies have reported on the triangular working zone during transforaminal endoscopic lumbar discectomy. Many risk factors and restrictions for this procedure have been proposed. METHODS: Images of 39 patients were analyzed bilaterally at the levels of L3-L4 and L4-L5. Bilateral axial and coronal angles of the roots, root area, and foraminal area were calculated. RESULTS: No significant difference was observed between the axial angle of the left and right L3 root. A significant difference was found between the axial angle of right and left L4 roots. A significant difference was observed when the coronal angle of the right and left L3 roots were compared, but no significant difference was found when the coronal angle of the right and left L4 roots were compared. No significant difference was observed when the foraminal area of the right and left L3 and L4 roots were compared, but a significant difference was observed when the root area of right and left L3 and L4 roots were compared. CONCLUSIONS: We suggest that these radiological measurements should be obtained for safety reasons before endoscopic discectomy surgery.


Özet

PURPOSE: The dimensions of the working zone for endoscopic lumbar discectomy should be evaluated by preoperative magnetic resonance images. The aim of this study was to analyze the angle of the roots, root area, and foraminal area. OVERVIEW OF LITERATURE: Few studies have reported on the triangular working zone during transforaminal endoscopic lumbar discectomy. Many risk factors and restrictions for this procedure have been proposed. METHODS: Images of 39 patients were analyzed bilaterally at the levels of L3-L4 and L4-L5. Bilateral axial and coronal angles of the roots, root area, and foraminal area were calculated. RESULTS: No significant difference was observed between the axial angle of the left and right L3 root. A significant difference was found between the axial angle of right and left L4 roots. A significant difference was observed when the coronal angle of the right and left L3 roots were compared, but no significant difference was found when the coronal angle of the right and left L4 roots were compared. No significant difference was observed when the foraminal area of the right and left L3 and L4 roots were compared, but a significant difference was observed when the root area of right and left L3 and L4 roots were compared. CONCLUSIONS: We suggest that these radiological measurements should be obtained for safety reasons before endoscopic discectomy surgery.

Magnetic resonance imaging predictors of surgical outcome in degenerative lumbal spinal stenosis.

Original Article Jpn J Radiol, Volume 30, Issue 10, 2012, Pages 811-818

Abstract

Purpose To identify any MRI predictors for surgical outcomes of patients with degenerative lumbar spinal stenosis (DLSS) having instrumented posterior decompression (IPD) surgery. Materials and methods Seventy patients with DLSS who underwent IPD were reviewed retrospectively. The clinical score of each patient was assessed using the JOAS (Japanese Orthopedics Association Scoring) system, which is mainly based on the subjective symptoms and physical signs of the patients before (JOAS-I) and after (JOAS-II) surgery. Healing rate (HR) was calculated as: [(JOAS-II) - (JOAS-I)] × 100/[15 - (JOAS-I)]. HR >50 % was considered clinical improvement. Radiological stenosis was assessed on MRI and was graded from 0 to 3 at the laminectomy level in terms of thecal sac-nerve root compression, foraminal stenosis, and facet degeneration. Results Mean HR of the improved patients (n = 39) was 81.94; HR of the unimproved patients (n = 31) was 34.75 (p < 0.05). There was no statistical difference in radiological stenosis parameters between the two groups (p > 0.05). HR was worse in patients with severe facet degeneration. Conclusions Surgical outcomes of DLSS depend on multiple variables. It is not possible to predict the outcomes by assessing only one parameter. The possible outcomes should be analyzed by considering all the factors individually.


Özet

Purpose To identify any MRI predictors for surgical outcomes of patients with degenerative lumbar spinal stenosis (DLSS) having instrumented posterior decompression (IPD) surgery. Materials and methods Seventy patients with DLSS who underwent IPD were reviewed retrospectively. The clinical score of each patient was assessed using the JOAS (Japanese Orthopedics Association Scoring) system, which is mainly based on the subjective symptoms and physical signs of the patients before (JOAS-I) and after (JOAS-II) surgery. Healing rate (HR) was calculated as: [(JOAS-II) - (JOAS-I)] × 100/[15 - (JOAS-I)]. HR >50 % was considered clinical improvement. Radiological stenosis was assessed on MRI and was graded from 0 to 3 at the laminectomy level in terms of thecal sac-nerve root compression, foraminal stenosis, and facet degeneration. Results Mean HR of the improved patients (n = 39) was 81.94; HR of the unimproved patients (n = 31) was 34.75 (p < 0.05). There was no statistical difference in radiological stenosis parameters between the two groups (p > 0.05). HR was worse in patients with severe facet degeneration. Conclusions Surgical outcomes of DLSS depend on multiple variables. It is not possible to predict the outcomes by assessing only one parameter. The possible outcomes should be analyzed by considering all the factors individually.

Effect of complete denture wearing on deglutition time: a cine-magnetic resonance imaging study

Original Article J Oral Rehabil. , Volume 39, Issue 3, 2012, Pages 198-209

Abstract

Purpose of the study was to evaluate the effect of complete denture wearing on deglutition time (DT), hyoid bone and larynx movements in edentulous patients with real-time balanced turbo field echo cine-magnetic resonance imaging. Subjects were examined by cine-magnetic resonance imaging in supine position during swallowing water. Two sets of images for 23 edentulous (with/without wearing complete dentures) and one for 23 dentulous patients were obtained. Radiographic outputs representing three consecutive deglutition stages (oral, pharyngeal and oesophageal) were provided to perform measurements. Deglutition time significantly increased when edentulous patients wore their dentures (mean 0·75 s increased to 1·17 s), whereas dentulous patients' DT was about 0·91 s (P ? 0.05). The duration of deglutition is crucial because prolonged pharyngeal transit times increases the risk of aspiration. Within the limitations of the study, complete denture wearing could increase the shortened DT of the edentulous patients.


Özet

Purpose of the study was to evaluate the effect of complete denture wearing on deglutition time (DT), hyoid bone and larynx movements in edentulous patients with real-time balanced turbo field echo cine-magnetic resonance imaging. Subjects were examined by cine-magnetic resonance imaging in supine position during swallowing water. Two sets of images for 23 edentulous (with/without wearing complete dentures) and one for 23 dentulous patients were obtained. Radiographic outputs representing three consecutive deglutition stages (oral, pharyngeal and oesophageal) were provided to perform measurements. Deglutition time significantly increased when edentulous patients wore their dentures (mean 0·75 s increased to 1·17 s), whereas dentulous patients' DT was about 0·91 s (P ? 0.05). The duration of deglutition is crucial because prolonged pharyngeal transit times increases the risk of aspiration. Within the limitations of the study, complete denture wearing could increase the shortened DT of the edentulous patients.

Can Magnesium sulphate prevent cerebral ischemic injury? An experimental study and neuroradiological evidence

Original Article Journal of Neurological Sciences [Turkish] , Volume 30, Issue 1, 2013, Pages 30-39

Abstract

This study was designed to investigate whether magnesium sulphate prevents cerebral ischemic injury on an experimental rat model. Forty Sprague-Dawley rats were divided into 4 groups: I) the sham group; II) the group to which saline was applied prior to ischemia (control); III) the group that received MgSO4 (90 mg/ kg) intraperitoneally 30 minutes before ischemia; IV) the group that received MgSO4 (90 mg/ kg) intraperitoneally 30 minutes after ischemia. Infarct volumes were measured in all the rat groups by the use of MRI subsequently analyzed by the Workstation: Philips Easy Vision 5.2.1.1 Measurement analysis program. Total infarct volumes in the ischemic group that received saline without MgSO4, in the group that received MgSO4 after occlusion of the MCA and in the group that received MgSO4 before MCA occlusion were 231.7±34.03 mm3, 158.85±32.16 mm3 and 87.35±22.27 mm3 respectively. Total infarct volumes were significantly reduced in both the pre-occlusive and post-occlusive MgSO4 treatment groups (p<0.001). Our results support that magnesium displays a neuroprotective impact against cerebral ischemic injury. This therapeutic potential may have important clinical applicability if applied before neurovascular surgical interventions. However, the actual therapeutic potential of magnesium in humans and standardization of protocols need to be unveiled in further studies.


Özet

This study was designed to investigate whether magnesium sulphate prevents cerebral ischemic injury on an experimental rat model. Forty Sprague-Dawley rats were divided into 4 groups: I) the sham group; II) the group to which saline was applied prior to ischemia (control); III) the group that received MgSO4 (90 mg/ kg) intraperitoneally 30 minutes before ischemia; IV) the group that received MgSO4 (90 mg/ kg) intraperitoneally 30 minutes after ischemia. Infarct volumes were measured in all the rat groups by the use of MRI subsequently analyzed by the Workstation: Philips Easy Vision 5.2.1.1 Measurement analysis program. Total infarct volumes in the ischemic group that received saline without MgSO4, in the group that received MgSO4 after occlusion of the MCA and in the group that received MgSO4 before MCA occlusion were 231.7±34.03 mm3, 158.85±32.16 mm3 and 87.35±22.27 mm3 respectively. Total infarct volumes were significantly reduced in both the pre-occlusive and post-occlusive MgSO4 treatment groups (p<0.001). Our results support that magnesium displays a neuroprotective impact against cerebral ischemic injury. This therapeutic potential may have important clinical applicability if applied before neurovascular surgical interventions. However, the actual therapeutic potential of magnesium in humans and standardization of protocols need to be unveiled in further studies.

Interrelationship between liver hemodynamics and tumor metabolism in liver metastasis: Diagnostic value of Doppler perfusion index revisited.

Original Article Praque Medical Report , Volume 114, Issue 2, 2013, Pages 103-112

Abstract

It should be expected that the hepatic blood flow increase in the cases with liver metastasis. We aimed to find out if there is a correlation between Doppler parameters and hepatic metabolic activity in oncology patients. 35 patients with hepatic metastases who were identified by 18F-fluorodeoxyglucose positron emission tomography scan and assessed with Doppler ultrasound were included in this prospective study. Patients with hepatic disease, cardiac dysfunction, dehydration, history of alcoholism, intake of antihypertensive or vasoactive medication were excluded. Volume flow of the proper hepatic artery and the portal vein were measured in the hepatoduodenal ligament by Doppler sonography. Doppler perfusion index (the ratio of the hepatic artery flow to the total liver blood flow) and flow volumes of 31 age matched subjects were compared. Both flow of the proper hepatic artery and portal vein were found to be significantly higher in patients with liver metastasis. The mean Doppler perfusion index value was 0.2 ± 0.13 in hepatic metastases whereas 0.13 ± 0.05 in control group. Doppler perfusion index was significantly higher in liver metastases (p=0.008). A positive correlation was found between the maximum standardized uptake value of the liver and flow volume of the proper hepatic artery (r=0.774, p=0). Blood flow of the proper hepatic artery and Doppler perfusion index correlates with hepatic standardized uptake value. Flow measurements of the liver may become an important parameter for selecting patients for further positron emission tomography scan and following-up the response after systemic and local therapeutic procedures.


Özet

It should be expected that the hepatic blood flow increase in the cases with liver metastasis. We aimed to find out if there is a correlation between Doppler parameters and hepatic metabolic activity in oncology patients. 35 patients with hepatic metastases who were identified by 18F-fluorodeoxyglucose positron emission tomography scan and assessed with Doppler ultrasound were included in this prospective study. Patients with hepatic disease, cardiac dysfunction, dehydration, history of alcoholism, intake of antihypertensive or vasoactive medication were excluded. Volume flow of the proper hepatic artery and the portal vein were measured in the hepatoduodenal ligament by Doppler sonography. Doppler perfusion index (the ratio of the hepatic artery flow to the total liver blood flow) and flow volumes of 31 age matched subjects were compared. Both flow of the proper hepatic artery and portal vein were found to be significantly higher in patients with liver metastasis. The mean Doppler perfusion index value was 0.2 ± 0.13 in hepatic metastases whereas 0.13 ± 0.05 in control group. Doppler perfusion index was significantly higher in liver metastases (p=0.008). A positive correlation was found between the maximum standardized uptake value of the liver and flow volume of the proper hepatic artery (r=0.774, p=0). Blood flow of the proper hepatic artery and Doppler perfusion index correlates with hepatic standardized uptake value. Flow measurements of the liver may become an important parameter for selecting patients for further positron emission tomography scan and following-up the response after systemic and local therapeutic procedures.

Utility of semiquantitative parameters to differentiate benign and malignant focal hepatic lesions

Original Article Clin Imaging, Volume 37, Issue 4, 2013, Pages 692-696

Abstract

OBJECTIVE: Any distinction and the usefulness of semiquantitative parameters derived from dynamic-contrast-enhanced (DCE) MRI obtained with extracellular gadolinium contrast agent in hemangiomas, hepatocellular carcinomas (HCC) and metastases of the liver was studied prospectively. METHODS: Seventy-four focal liver lesions (consisted of 34 hemangiomas, 23 HCC, and 17 metastases) of the 37 patients underwent DCE-MRI (six phases). Functional coloured maps and subsequently semiquantitative parameters were obtained using the FuncTool. Maximum and average (avg) values of mean time to enhancement (MTE), positive enhancement integral (PEI), time to peak (TP), maximum slope of increase (MSI), maximum slope of decrease (MSD) values were measured by placing the region of interest. The diagnosis of HCC and metastases were proven histopathologically and/or clinically. RESULTS: The mean values of the paremeters were: In hemangiomas, avgMTE: 271.2 ± 4.7; avgPEI: 840.3 ± 77.3; avgTP: 146.6 ± 13.1; avgMSI: 999.1 ± 108.4; avgMSD: 254.1 ± 30.4. In HCC, avgMTE: 246 ± 3.6; avgPEI: 424.9 ± 31.6; avgTP: 132.8 ± 9.5; avgMSI: 484.1 ± 36.5; avgMSD: 109.1 ± 13.3. In metastases, avgMTE: 248.1 ± 8.2, avgPEI: 453.9 ± 39.6; avgTP: 142.8 ± 13.9; avgMSI: 472.6 ± 50.4 and avg MSD: 200.1 ± 38.2. Both maximum and avg values of MTE, PEI, MSI, and MSD were significantly higher in hemangiomas (P<.05). The most significant difference was found in avgPEI with 82.1% sensitivity and 67.6% specificity when 570 cutoff value was considered. The values however were not significantly different among HCC and metastases (P>.05). CONCLUSIONS: Semiquantitative DCE-MRI parameters provide useful, complementary, and quantitative information. This technique increases diagnostic value of extracellular gadolinium contrast agent to characterize focal liver lesions and may be useful for follow-up after local-regional therapies.


Özet

OBJECTIVE: Any distinction and the usefulness of semiquantitative parameters derived from dynamic-contrast-enhanced (DCE) MRI obtained with extracellular gadolinium contrast agent in hemangiomas, hepatocellular carcinomas (HCC) and metastases of the liver was studied prospectively. METHODS: Seventy-four focal liver lesions (consisted of 34 hemangiomas, 23 HCC, and 17 metastases) of the 37 patients underwent DCE-MRI (six phases). Functional coloured maps and subsequently semiquantitative parameters were obtained using the FuncTool. Maximum and average (avg) values of mean time to enhancement (MTE), positive enhancement integral (PEI), time to peak (TP), maximum slope of increase (MSI), maximum slope of decrease (MSD) values were measured by placing the region of interest. The diagnosis of HCC and metastases were proven histopathologically and/or clinically. RESULTS: The mean values of the paremeters were: In hemangiomas, avgMTE: 271.2 ± 4.7; avgPEI: 840.3 ± 77.3; avgTP: 146.6 ± 13.1; avgMSI: 999.1 ± 108.4; avgMSD: 254.1 ± 30.4. In HCC, avgMTE: 246 ± 3.6; avgPEI: 424.9 ± 31.6; avgTP: 132.8 ± 9.5; avgMSI: 484.1 ± 36.5; avgMSD: 109.1 ± 13.3. In metastases, avgMTE: 248.1 ± 8.2, avgPEI: 453.9 ± 39.6; avgTP: 142.8 ± 13.9; avgMSI: 472.6 ± 50.4 and avg MSD: 200.1 ± 38.2. Both maximum and avg values of MTE, PEI, MSI, and MSD were significantly higher in hemangiomas (P<.05). The most significant difference was found in avgPEI with 82.1% sensitivity and 67.6% specificity when 570 cutoff value was considered. The values however were not significantly different among HCC and metastases (P>.05). CONCLUSIONS: Semiquantitative DCE-MRI parameters provide useful, complementary, and quantitative information. This technique increases diagnostic value of extracellular gadolinium contrast agent to characterize focal liver lesions and may be useful for follow-up after local-regional therapies.

KKTC Yakın Doğu Üniversite Hastanesinde Erken Tanı ve Tarama Programında Tanı Konulan Meme Kanser Olgularının Değerlendirilmesi

Original Article Meme Sagligi Dergisi/Journal of Breast Health, Volume *, Issue -, 2015, Pages -

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The middle interhemispheric variant of holoprosencephaly: magnetic resonance and diffusion tensor imaging findings.

Original Article Br J Radiol, Volume May, Issue 5:20160115. [Epub ahead of print], 2016, Pages 5:20160115. [Epub ahead of print]

Abstract

OBJECTIVE: The middle interhemispheric (MIH) variant of holoprosencephaly (HPE) is the incomplete separation of midline cerebral hemispheres with the absence of callosal body. We aimed to describe the additional knowledge of diffusion tensor imaging (DTI) over conventional MRI in the evaluation of patients with MIH variant of HPE. METHODS: Conventional MRI and DTI data of five patients were retrospectively evaluated. The parenchymal anomalies as well as changes at white matter tracts were systematically reviewed. RESULTS: Except the callosal body and central cingulum fibres, which were missing in all patients, all other major white matter tracts (superior and inferior longitudinal, superior and inferior fronto-occipital, subcallosal and uncinate fasciculi and anterior commissure) had a normal course, thickness and integrity on diffusion tensor images. The genial and splenial callosal fibres were altered and rarefied on tractography. All patients had a central ventricular notch extending into the non-cleaved heterotopic grey matter involving the body of the corpus callosum, which is very typical for the MIH variant of HPE. The remnant traversing white matter fibres above the non-cleaved heterotopic grey matter and incomplete partition of the interhemispheric fissure were also identified. No Probst bundles were detected. A single common ventricle without the septum pellucidum was noted in all patients. One patient had incomplete partition of the thalami, and two patients had abnormally oriented thalami without any prominent interthalamic connection. Vertically oriented hippocampi were detected in four out of five patients. Three patients had relatively flat and vertically oriented Sylvian fissures and in two patients, fissures were abnormally connected over the vertex. CONCLUSION: Additional DTI findings can not only clearly reveal the white matter alterations better than conventional MRI but also provide a better understanding of the aetiological changes that cause the MIH variant of HPE. Advances in knowledge: DTI can provide a better analysis of cerebral white matter connectivity and promotes understanding of the underlying microstructural changes that occur in patients with the MIH variant of HPE.


Özet

Diffusion-weighted magnetic resonance imaging in the assessment of choroid plexus aging.

Original Article Neuroradiology Journal, Volume 1, Issue Jan 1:1971400917714280. , 2017, Pages Jan 1:1971400917714280.

Abstract

Recent studies have pointed out dysfunction and histopathological changes of the choroid plexuses (CPs) with aging. This paper reviews apparent diffusion coefficient (ADC) values of the CPs for age-related changes. All the brain MR images of the patients between January 2013 and June 2014 in our Radiology Department were retrospectively investigated. Patients with major cranial abnormalities (brain tumors, hyperacute or acute ischemia, developmental anomalies, hemorrhage, hydrocephaly) were excluded. Diffusion-weighted images were obtained at the parameter values of b?=?1000?s/mm2 in the axial plane. The transverse diameters of the lateral ventricles (LVs) and ADC values of both CPs were measured. Brain MRIs of 202 individuals, 97 men (48%), 105 women (52%), were studied. There were statistically significant positive correlations between the ADC values of CP and patient ages. (Right CP: r?=?0.623; p?<?0.05. Left CP: r?=?0.654; p?<?0.05). There were positive correlations between LV diameters and age ( r?=?0.624, p?<?0.05 for the right LV; r?=?0.621, p?<?0.05 for the left LV). The ADC values of age groups significantly differed ( p?<?0.05); the ?61-year-old group was significantly higher compared to younger individuals. There is a progressive increase of water diffusivity in the CPs during aging. ADC values should be considered as a neuroimaging quantitative biomarker in normal aging-dementia syndromes.


Özet

The role of diffusion-weighted imaging in prediction liver iron concentration in beta-thalassaemia patients.

Original Article J Med Imaging Radiat Oncol. , Volume Jul 11, Issue -, 2017, Pages -

Abstract

OBJECTIVE: The aim of this study was to analyse the value of diffusion-weighted magnetic resonance imaging (DWI) to determine the liver parenchyma iron concentration in ß-thalassaemia major patients. METHODS: Abdominal magnetic resonance (MR) imaging, including gradient echo sequences and DWI sequences, was undertaken of 55 ß-thalassaemia major patients. The apparent diffusion coefficient (ADC) values of liver parenchyma were measured in seven regions at the level of the portal bifurcation and compared with liver iron concentration (LIC). Patients with normal and mild liver dry weight (LDW) results were classified as group 1, whereas patients with moderate and severe values were classified as group 2. RESULTS: There was a dramatic decrease in ADC values as the severity of LIC increased. The median ADC values were 1.6-1.9 × 10-3 mm2 /sec in group 1 and 0.6-0.9 × 10-3 mm2 /sec in group 2. A negative correlation was observed between ADC and the LDW values in both groups. The ADC and LIC correlation in each subgroup was statistically significant with asymptotic 95% confidence intervals of 0.820-0.997. CONCLUSION: Diffusion-weighted imaging is sensitive to tissue changes as a result of iron accumulation and may be used to predict liver iron overload in ß-thalassaemia major patients with a high sensitivity and specificity.


Özet

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Diffusion-weighted magnetic resonance imaging in the assessment of choroid plexus aging.

Original Article Neuroradiology Journal , Volume 30, Issue 5, 2017, Pages 490-495

Abstract

Recent studies have pointed out dysfunction and histopathological changes of the choroid plexuses (CPs) with aging. This paper reviews apparent diffusion coefficient (ADC) values of the CPs for age-related changes. All the brain MR images of the patients between January 2013 and June 2014 in our Radiology Department were retrospectively investigated. Patients with major cranial abnormalities (brain tumors, hyperacute or acute ischemia, developmental anomalies, hemorrhage, hydrocephaly) were excluded. Diffusion-weighted images were obtained at the parameter values of b?=?1000?s/mm2 in the axial plane. The transverse diameters of the lateral ventricles (LVs) and ADC values of both CPs were measured. Brain MRIs of 202 individuals, 97 men (48%), 105 women (52%), were studied. There were statistically significant positive correlations between the ADC values of CP and patient ages. (Right CP: r?=?0.623; p?<?0.05. Left CP: r?=?0.654; p?<?0.05). There were positive correlations between LV diameters and age ( r?=?0.624, p?<?0.05 for the right LV; r?=?0.621, p?<?0.05 for the left LV). The ADC values of age groups significantly differed ( p?<?0.05); the ?61-year-old group was significantly higher compared to younger individuals. There is a progressive increase of water diffusivity in the CPs during aging. ADC values should be considered as a neuroimaging quantitative biomarker in normal aging-dementia syndromes.


Özet

The role of diffusion-weighted imaging in prediction liver iron concentration in beta-thalassaemia patients.

Original Article J Med Imaging Radiat Oncol., Volume july 11, Issue -, 2017, Pages -

Abstract

Abstract OBJECTIVE: The aim of this study was to analyse the value of diffusion-weighted magnetic resonance imaging (DWI) to determine the liver parenchyma iron concentration in ß-thalassaemia major patients. METHODS: Abdominal magnetic resonance (MR) imaging, including gradient echo sequences and DWI sequences, was undertaken of 55 ß-thalassaemia major patients. The apparent diffusion coefficient (ADC) values of liver parenchyma were measured in seven regions at the level of the portal bifurcation and compared with liver iron concentration (LIC). Patients with normal and mild liver dry weight (LDW) results were classified as group 1, whereas patients with moderate and severe values were classified as group 2. RESULTS: There was a dramatic decrease in ADC values as the severity of LIC increased. The median ADC values were 1.6-1.9 × 10-3 mm2 /sec in group 1 and 0.6-0.9 × 10-3 mm2 /sec in group 2. A negative correlation was observed between ADC and the LDW values in both groups. The ADC and LIC correlation in each subgroup was statistically significant with asymptotic 95% confidence intervals of 0.820-0.997. CONCLUSION: Diffusion-weighted imaging is sensitive to tissue changes as a result of iron accumulation and may be used to predict liver iron overload in ß-thalassaemia major patients with a high sensitivity and specificity.


Özet

Spinal Yaralanmaların Tanısında Direkt Radyografi ve Bilgisayarlı Tomografi Bulguları

Review Turkiye Klinikleri Journal of Physical Medicine Rehabilitation, Volume *, Issue -, 2001, Pages -

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Spinal Yaralanmaların TanısındaManyetik Rezonans Görüntüleme Bulguları

Review Turkiye Klinikleri Journal of Physical Medicine Rehabilitation, Volume *, Issue -, 2001, Pages -

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Clinical applications of proton MR spectroscopy in the diagnosis of brain tumours

Review Spectroscopy Int J , Volume 18, Issue 1, 2004, Pages 143-153

Abstract

Abstract. There are few but important problems in magnetic resonance (MR) diagnosis of the brain tumours such as predicting the grade, exact definition of the tumour borders, differentiation of the cystic tumours from abscess, the tumoral core from peritumoral oedema, and the tumour recurrence from radiation necrosis. MR spectroscopy (MRS) can add more information to MR imaging (MRI) in solving many of these problems. Widespread usage of faster MRS applications with higher signalto- noise ratio (SNR) and spatial resolution, allows us to detect functional metabolic changes, which provides more data to understand the exact nature of the tumour and the morphological and physiological changes occurring in the surrounding brain parenchyma


Özet

Abstract. There are few but important problems in magnetic resonance (MR) diagnosis of the brain tumours such as predicting the grade, exact definition of the tumour borders, differentiation of the cystic tumours from abscess, the tumoral core from peritumoral oedema, and the tumour recurrence from radiation necrosis. MR spectroscopy (MRS) can add more information to MR imaging (MRI) in solving many of these problems. Widespread usage of faster MRS applications with higher signalto- noise ratio (SNR) and spatial resolution, allows us to detect functional metabolic changes, which provides more data to understand the exact nature of the tumour and the morphological and physiological changes occurring in the surrounding brain parenchyma

Preoperative evaluation of solitary malignant brain tumors with MR spectroscopy and diffusion weighted imaging

Review Salud i Ciencia , Volume 14, 2006, Pages 290-293

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Özet

Imaging features of benign adrenal cysts.

Review Eur J Radiol , Volume 60, Issue 3, 2006, Pages 465-469

Abstract

Benign adrenal gland cysts (BACs) are rare lesions with a variable histological spectrum and may mimic not only each other but also malignant ones. We aimed to review imaging features of BACs which can be helpful in distinguishing each entity and determining the subsequent appropriate management.


Özet

Benign adrenal gland cysts (BACs) are rare lesions with a variable histological spectrum and may mimic not only each other but also malignant ones. We aimed to review imaging features of BACs which can be helpful in distinguishing each entity and determining the subsequent appropriate management.

Over Tümörlerinde Radyolojik Görüntüleme

Review Turkiye Klinikleri Journal of Surgical Medical Sciences, Volume *, Issue -, 2007, Pages -

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Neuro-otologic applications of MRI

Review Diagn Interv Radiol , Volume 13, Issue 3, 2007, Pages 109-120

Abstract

Magnetic resonance imaging (MRI) has increasingly new applications in neuro-otology. The aim of this review was to summarize MRI applications in neuro- otology and make a correlation between neuro-otologic anatomy and MR images. Different MRI techniques have been described in the imaging of different neuro-otologic structures. In particular, we discuss the effectiveness, indications, and techniques of MRI in the demonstration of neuro-otologic tracts and their related pathologies. MRI should be the first choice imaging modality for the evaluation of retrocochlear pathologies.


Özet

Magnetic resonance imaging (MRI) has increasingly new applications in neuro-otology. The aim of this review was to summarize MRI applications in neuro- otology and make a correlation between neuro-otologic anatomy and MR images. Different MRI techniques have been described in the imaging of different neuro-otologic structures. In particular, we discuss the effectiveness, indications, and techniques of MRI in the demonstration of neuro-otologic tracts and their related pathologies. MRI should be the first choice imaging modality for the evaluation of retrocochlear pathologies.

Beyin Tümörlerinde Nöroradyoloji

Review Turkiye Klinikleri Journal of Radiology Special Topics, Volume *, Issue -, 2008, Pages -

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Temporal Kemik

Review Turkiye Klinikleri Journal of Radiology Special Topics, Volume *, Issue -, 2008, Pages -

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CT and MRI in the evaluation of craniospinal involvement with polyostotic fibrous dysplasia in McCune-Albright syndrome

Review Diagn Interv Radiol, Volume 14, Issue 4, 2008, Pages 177-181

Abstract

In this study, the efficacy of computed tomography (CT) and magnetic resonance imaging (MRI) in the evaluation of craniospinal involvement with polyostotic fibrous dysplasia (PFD) in McCune-Albright syndrome (MAS) and related complications were reviewed. In CT, ground-glass appearance with well-defined borders was seen, with medullary widening and cortical thinning. More rarely, cystic/necrotic areas were observed within involved bone. These lesions were seen as hypointense in T1-weighted sequences and as hyperintense in T2-weighted sequences of MRI. There was no heterogeneous contrast enhancement. Cystic/necrotic areas were seen as hyperintense images on T2-weighted sequences. While bone marrow involvement was shown more clearly with MRI, compression of cranial and spinal nerves was determined most effectively by evaluation of CT and MRI together. CT and MRI should be employed together in order to demonstrate the extent of disease, and complications of craniospinal involvement of PFD in patients with MAS.


Özet

In this study, the efficacy of computed tomography (CT) and magnetic resonance imaging (MRI) in the evaluation of craniospinal involvement with polyostotic fibrous dysplasia (PFD) in McCune-Albright syndrome (MAS) and related complications were reviewed. In CT, ground-glass appearance with well-defined borders was seen, with medullary widening and cortical thinning. More rarely, cystic/necrotic areas were observed within involved bone. These lesions were seen as hypointense in T1-weighted sequences and as hyperintense in T2-weighted sequences of MRI. There was no heterogeneous contrast enhancement. Cystic/necrotic areas were seen as hyperintense images on T2-weighted sequences. While bone marrow involvement was shown more clearly with MRI, compression of cranial and spinal nerves was determined most effectively by evaluation of CT and MRI together. CT and MRI should be employed together in order to demonstrate the extent of disease, and complications of craniospinal involvement of PFD in patients with MAS.

CNS infections of Herpesvirus family

Review Neuroimaging Clin N Am , Volume 18, Issue 1, 2008, Pages 53-84

Abstract

Herpesviruses are one of the most common groups of pathogens causing central nervous system infections in humans. They mostly cause encephalitis, meningitis, or myelitis in immunocompetent and immunocompromised patients. Children, adults, and the elderly can all be affected. Although contrast-enhanced CT is more widely used for diagnosis, contrast-enhanced MR imaging combined with diffusion-weighted imaging is superior to CT in the detection of early changes and the real extent of the disease, and in assessing prognosis and monitoring response to antiviral treatment. More sophisticated techniques, such as MR spectroscopy and perfusion imaging, can aid in the differential diagnosis of herpesvirus infections from other tumoral, demyelinating, and ischemic processes.


Özet

Herpesviruses are one of the most common groups of pathogens causing central nervous system infections in humans. They mostly cause encephalitis, meningitis, or myelitis in immunocompetent and immunocompromised patients. Children, adults, and the elderly can all be affected. Although contrast-enhanced CT is more widely used for diagnosis, contrast-enhanced MR imaging combined with diffusion-weighted imaging is superior to CT in the detection of early changes and the real extent of the disease, and in assessing prognosis and monitoring response to antiviral treatment. More sophisticated techniques, such as MR spectroscopy and perfusion imaging, can aid in the differential diagnosis of herpesvirus infections from other tumoral, demyelinating, and ischemic processes.

Manyetik Rezonans Anjiografi Artefakt ve Sınırlamaları

Review Turkiye Klinikleri Journal of Radiology Special Topics, Volume *, Issue -, 2009, Pages -

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Common Pitfalls in Pediatric Imaging: Head and Spine

Review Pediatric Radiology , Volume 39, Issue Suppl 3, 2009, Pages 347-355

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Özet

Diffusion-tensor imaging in brain tumors

Review Imaging in Medicine , Volume 1, Issue 2, 2009, Pages 155-171

Abstract

Diffusion-tensor imaging (DTI) is the only novel imaging technique that is able to demonstrate white matter tracts and their structural changes related to different brain pathologies. Diffusion tensor describes the 3D diffusion phenomenon of the protons according to their microenvironmental properties allowing a unique description of the space where this molecular movement takes place. This model provides in vivo demonstration of the complex ultrastructural organization of the white matter as well as structural changes due to tumoral invasion. Current applications of DTI and magnetic resonance tractography allow accurate delineation of the eloquent white matter tracts and their relation with tumoral tissue. This article summarizes the basic physics and clinical applications of DTI in brain tumor diagnosis and follow-up. Effectiveness of different DTI metrics and magnetic resonance tractography is reviewed in tumor characterization, treatment planning and in the assessment of post-therapeutic changes. The limitations and the advancements in DTI era to minimize these limitations are also discussed. Current technical properties of DTI and future expectations of new DTI models make it a very promising tool for more precise evaluation of tumor-related structural changes in white matter tracts.


Özet

Diffusion-tensor imaging (DTI) is the only novel imaging technique that is able to demonstrate white matter tracts and their structural changes related to different brain pathologies. Diffusion tensor describes the 3D diffusion phenomenon of the protons according to their microenvironmental properties allowing a unique description of the space where this molecular movement takes place. This model provides in vivo demonstration of the complex ultrastructural organization of the white matter as well as structural changes due to tumoral invasion. Current applications of DTI and magnetic resonance tractography allow accurate delineation of the eloquent white matter tracts and their relation with tumoral tissue. This article summarizes the basic physics and clinical applications of DTI in brain tumor diagnosis and follow-up. Effectiveness of different DTI metrics and magnetic resonance tractography is reviewed in tumor characterization, treatment planning and in the assessment of post-therapeutic changes. The limitations and the advancements in DTI era to minimize these limitations are also discussed. Current technical properties of DTI and future expectations of new DTI models make it a very promising tool for more precise evaluation of tumor-related structural changes in white matter tracts.

Corpus callosum: normal imaging appearance, variants and pathologic conditions.

Review J Med Imaging Radiat Oncol. , Volume 54, Issue 6, 2010, Pages 541-549

Abstract

Various types of lesions can occur within the corpus callosum (CC) which is a white matter tract communicating corresponding regions of the cerebral hemispheres. Magnetic resonance imaging is the modality of choice for the evaluation of the CC. In addition, diffusion weighted imaging and diffusion tensor imaging can provide additional information about the CC. The aim of this study is to illustrate the imaging features of the corpus callosum and its pathologies.


Özet

Various types of lesions can occur within the corpus callosum (CC) which is a white matter tract communicating corresponding regions of the cerebral hemispheres. Magnetic resonance imaging is the modality of choice for the evaluation of the CC. In addition, diffusion weighted imaging and diffusion tensor imaging can provide additional information about the CC. The aim of this study is to illustrate the imaging features of the corpus callosum and its pathologies.

Cerebrospinal fluid flow imaging by using phase-contrast MR technique.

Review Br J Radiol, Volume 84, Issue 1004, 2011, Pages 758-765

Abstract

Cerebrospinal fluid (CSF) spaces include ventricles and cerebral and spinal subarachnoid spaces. CSF motion is a combined effect of CSF production rate and superimposed cardiac pulsations. Knowledge of CSF dynamics has benefited considerably from the development of phase-contrast (PC) MRI. There are several disorders such as communicating and non-communicating hydrocephalus, Chiari malformation, syringomyelic cyst and arachnoid cyst that can change the CSF dynamics. The aims of this pictorial review are to outline the PC MRI technique, CSF physiology and cerebrospinal space anatomy, to describe a group of congenital and acquired disorders that can alter the CSF dynamics, and to assess the use of PC MRI in the assessment of various central nervous system abnormalities.


Özet

Cerebrospinal fluid (CSF) spaces include ventricles and cerebral and spinal subarachnoid spaces. CSF motion is a combined effect of CSF production rate and superimposed cardiac pulsations. Knowledge of CSF dynamics has benefited considerably from the development of phase-contrast (PC) MRI. There are several disorders such as communicating and non-communicating hydrocephalus, Chiari malformation, syringomyelic cyst and arachnoid cyst that can change the CSF dynamics. The aims of this pictorial review are to outline the PC MRI technique, CSF physiology and cerebrospinal space anatomy, to describe a group of congenital and acquired disorders that can alter the CSF dynamics, and to assess the use of PC MRI in the assessment of various central nervous system abnormalities.

Difüzyon Tensör Manyetik Rezonans Görüntüleme ve Klinik Uygulamaları

Review Turkiye Klinikleri Journal of Radiology Special Topics, Volume 7, Issue -, 2014, Pages 57-65

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Patient management symposium in emergency medicine at North Cyprus Emergency Medicine Days

Review The Journal of Academic Emergency Medicine JAEM, Volume 13, Issue 1, 2014, Pages 219-220

Abstract

The Patient Management Symposium in Emergency Medicine in North Cyprus Emergency Medicine Days was carried out between February 28 and March 1, 2014 at Lefkoşa, TRNC. Fifteen academicians carried out the Emergency Medicine Patient Management Symposium with 17 presentations at 7 di erent panels. Besides physicians, nurses, paramedics working in the 112 emergency health care services, emergency services and in the other clinics of the Turkish Republic of North Cyprus Ministry (TRNC) of Health, health professionals working in the emergency services and intensive care units of Near East University (NEU) hospital and other private facilities and NEU School of Medicine, Nursing Department of Faculty of Health Sciences and students of the Paramedic Program of Voca- tional School of Health and students of the other universities attended the symposium. The number of participants was 440, and it caught more attention than expected. Holding the organization of Patient Management in Emergency Medicine Symposium under the umbrella of Northern Cyprus Emergency Medicine Days has added strength and desire to the NEU School of Medicine Emergency Medicine Department and EPAT for other planned organizations.


Özet

The Patient Management Symposium in Emergency Medicine in North Cyprus Emergency Medicine Days was carried out between February 28 and March 1, 2014 at Lefkoşa, TRNC. Fifteen academicians carried out the Emergency Medicine Patient Management Symposium with 17 presentations at 7 di erent panels. Besides physicians, nurses, paramedics working in the 112 emergency health care services, emergency services and in the other clinics of the Turkish Republic of North Cyprus Ministry (TRNC) of Health, health professionals working in the emergency services and intensive care units of Near East University (NEU) hospital and other private facilities and NEU School of Medicine, Nursing Department of Faculty of Health Sciences and students of the Paramedic Program of Voca- tional School of Health and students of the other universities attended the symposium. The number of participants was 440, and it caught more attention than expected. Holding the organization of Patient Management in Emergency Medicine Symposium under the umbrella of Northern Cyprus Emergency Medicine Days has added strength and desire to the NEU School of Medicine Emergency Medicine Department and EPAT for other planned organizations.

Gliom dışı intra-aksiyal beyin tümörleri

Review Türk Radyoloji Seminerleri, Volume 4, Issue -, 2016, Pages 37-58

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Özet

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Çok kesitli bilgisayarli tomografi ile kardiyak bilgisayarli tomografi ve radyasyon maruziyeti: hasta ve sağlik personeli açisindan önemi

Review Turkiye Klinikleri Journal of Nuclear Medicine-Special Topics, Volume 2, Issue 2, 2016, Pages 39-47

Abstract

Cardiac computed tomography (CT) imaging is a noninvasive, quick tool with high sensitivity and specificity which can determine the anatomy and function of the heart as well as its pathologies. The major disadvantage of this method is exposure of the patient to ionizing radiation and the contrast agent nephrotoxicity. Usage of low kilovolts, prospective ECG triggering, high pitch imaging, imaging in a single heartbeat, adaptive dose protection and iterative reconstruction methods, the radiation dose can be reduced even below 1 mSv. In addition, calcium scoring can be made by dual-energy CT systems, without need to unenhanced scanning, further reducing the effective dose. One should be aware the cons and pros, technical capacity of the method. It must be performed if it will provide information that has an impact on the treatment protocol requirements. Radiation dose and the potential effects of radiation used in CT, as yet, failed to reveal a clear relationship. Especially due to concerns about the development of secondary cancers it requires the use of possible methods to reduce radiation dose and to follow a selective and rigorous way upon the indications of the examination.


Özet

Kardiyak bilgisayarlı tomografi (BT) ile kalbin anatomi ve fonksiyonları incelenebilmekte ve patolojileri noninvaziv şekilde, hızla, yüksek duyarlılık ve özgüllükle değerlendirilebilmektedir. Yöntemin en büyük dezavantajı hastanın iyonizan radyasyon ve nefrotoksik kontrast maddeye maruz kalışıdır. Ancak düşük kilovolt kullanımı, prospektif EKG tetikleme, yüksek pitchli görüntüleme, tek kalp atımında görüntüleme, adaptif doz koruma ve iteratif rekonstrüksiyon yöntemleri, radyasyon dozunun 1 mSv'in bile altına düşürülmesini sağlamaktadır. Ayrıca dual-enerji yöntemi ve kontrastlı BT-Anjiyografiden kalsiyum skorlama yapılmasını mümkün kılan yeni teknik gelişmelerin katkısıyla efektif doz daha da azaltılabilmektedir. Yöntemin artı ve eksileri ile teknik kapasitesinin bilinmesi ve hastanın tanı ve tedavisine olumlu katkıda bulunacak bilgiler sağlayacağı durumlarda uygulanması gerekmektedir. Henüz BT'de kullanılan radyasyon dozu ile potansiyel etkileri arasında net kesin bir ilişki ortaya konulamamışsa da, özellikle sekonder kanser gelişimi konusundaki endişeler radyasyon dozunu olabildiğince azaltacak yöntemlerin kullanılmasını ve tetkik isteminde seçici ve bilinçli bir yol izlenmesini gerektirmektedir.

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Teaching History

  • 2014 BAHAR

    RADIATION HEALTH & PROTECTION

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  • 2015 GÜZ

    RADIATION HEALTH & PROTECTION

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  • 2015 GÜZ

    RADIATION HEALTH & PROTECTION

    final

  • 2016 GÜZ

    RADIATION HEALTH & PROTECTION

    -

  • 2016 BAHAR

    CLINICAL TRAINING & APPLICATION 1

    -

  • 2016 GÜZ

    RADIATION HEALTH & PROTECTION

    final

  • 2015 BAHAR

    CLINICAL TRAINING & APPLICATION 1

    -

  • 2015 GÜZ

    RADIOLOGY PHYSICS

    .

  • 2016 GÜZ

    CLINICAL TRAINING & APPLICATION 2

    -

  • 2014 BAHAR

    CLINICAL TRAINING & APPLICATION 1

    -

  • 2017 GÜZ

    RADIOLOGY PHYSICS

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  • 2018 GÜZ

    RADIOLOGY PHYSICS

    .

  • 2015 GÜZ

    CLINICAL TRAINING & APPLICATION 2

    -

  • 2014 BAHAR

    CLINICAL TRAINING & APPLICATION 3

    -

  • 2016 GÜZ

    CLINICAL TRAINING & APPLICATION 3

    -

  • 2016 GÜZ

    RADIOLOGY PHYSICS

    .

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