Koray M. Akkan

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Round ligament varicosities are easily misdiagnosed as an obstructed hernia in a gravid patient. When this condition is diagnosed correctly, unnecessary intervention may be prevented. We aimed to determine the significance of round ligament varicosities in pregnancy and to describe their clinical presentation and sonographic appearance.
The authors present the results of Gamma Knife stereotactic radiosurgery performed in a series of children with arteriovenous malformations (AVMs). Between June 2005 and January 2014, 75 patients 18 years old or younger received Gamma Knife radiosurgery for AVMs. Of these, 58 patients were eligible for further analysis. The median age of the population was(More)
INTRODUCTION The knowledge of anatomic variations of the cerebral arterial circulation may be important to decide on the safest surgical or endovascular treatment method. Variations in the middle cerebral artery (MCA) territory seems to be less frequent than the other intracranial arteries. During the embryonic stage the primitive MCA is hypothesized to be(More)
PURPOSE To evaluate our results of stent-graft implantation for the endovascular treatment of peripheral vascular lesions. MATERIALS AND METHODS Seventeen patients underwent repair of iatrogenic, traumatic, or spontaneous vascular lesions by means of endovascular stent-grafts. The study cases consisted of 10 cardiac catheterization-induced femoral(More)
The aim of this study was to assess the effectiveness of the modified test-bolus (mTB) method in computed tomography pulmonary angiography (CTPA). The Institutional Review Board approved this retrospective study. We reviewed 24 patients (nine men, 15 women; age range, 21–88 years) in whom CTPA was performed either by Bolus-Tracking (BT) (n = 12) or mTB (n =(More)
OBJECTIVE To compare the accuracy of diagnosing aqueductal patency and image quality between high spatial resolution three-dimensional (3D) high-sampling-efficiency technique (sampling perfection with application optimized contrast using different flip angle evolutions [SPACE]) and T2-weighted (T2W) two-dimensional (2D) turbo spin echo (TSE) at 3-T in(More)
PURPOSE We report on the endovascular management of hemorrhage with stent-graft due to a misplaced central venous catheter in the vertebral artery (VA) during percutaneous internal jugular vein catheterization in a child. METHODS A 16-year-old female was presented with the diagnosis of familial Mediterranean fever related chronic renal insufficiency. An(More)
A 13-year-old girl was referred to our clinic with complaints of severe abdominal pain and vomiting. Her past medical history was remarkable: she had been diagnosed with type 1 diabetes mellitus (DM) 10 years previously and with celiac disease (CD) 1.5 years previously, and she had had an episode of left vertebral arterial occlusion resulting in transient(More)
BACKGROUND AND PURPOSE Optimal estimation of cerebral blood-flow volume (BFV) may be an important indicator for better evaluation of the patients with cerebrovascular disorders. In this study, we compared the BFV values at bilateral internal carotid and vertebral arteries of healthy volunteers obtained with color Doppler, power Doppler, and B-flow(More)