Kamran Mahmutyazicioglu

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PURPOSE Previous studies have shown that post-traumatic stress disorder (PTSD) is associated with lymbic system dysfunction. The purpose of this study is to evaluate whether or not the neuronal integrity in hippocampus and anterior cingulate gyrus is affected in PTSD as assessed by proton magnetic resonance spectroscopy. MATERIALS AND METHODS Single voxel(More)
Post-traumatic epilepsy is more frequent after severe head injuries, however the severity of the trauma is not always correlated with the injured brain tissue. We report a patient whose seizures developed 4 years after a face trauma. Upward displacement of the sphenoid wing caused a contusion at the orbital surface of the frontal lobe. Computed tomography,(More)
PURPOSE To demonstrate a novel automatic slice-positioning technique based on three new anatomical landmarks and to standardize prospective scans by lowering rotational and translational variances. MATERIALS AND METHODS After defining the interpeduncular fossa corner and the eyeball centers as landmarks, they are manually labeled on 25 different T1 MRI(More)
Traumatic brain damage can result in severe visual impairments including hemianopia. Lesions correlated with hemianopia can be located in any part of the retrochiasmatic optic pathway. However, traumatic lesions of the optic tract are relatively rare. We present a case with posttraumatic left homonymous hemianopia who had signal intensity change at the(More)
AIM Findings from clinical studies in postmenopausal women with late initiation of hormone replacement therapy (HRT) that test whether HRT protects cognitive functions in women are inconsistent. The aim of this study was to investigate the effects of HRT on brain metabolite ratios when initiated in the early postmenopausal period (critical window). (More)
While visualizing three dimensional (3D) structure of the coronary arteries, the projectory X-ray images can produce 3D tree of them up to a certain accuracy level with a lower dose of radiation when compared to computer tomography (CT). Here, in this study a novel and complete automatic system is designed which covers preprocessing, segmentation, matching(More)
PURPOSE DIR (double inversion recovery) is a sequence with the hybrid contrast of both FLAIR and STIR sequences, produced by the application of double inversion recovery pulse. It has been suggested that DIR provides high sensitivity to lesions with low T2 contrast. The purpose of this study was to test the hypothesis that DIR sequence is superior to(More)
PURPOSE The aim of this study was to assess the detectability of the structures that are affected by cervical spondylosis by different 3D MRI sequences and compare the image quality of those sequences. MATERIALS AND METHODS Twenty healthy volunteers were examined using a 1.5 T MR unit. T2* weighted 3D-gradient echo sequence with magnetization transfer(More)
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