Person: ALKAN, ALPAY
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Publication Metadata only Effects of contrast material on the metabolite ratios in single-voxel MR Spectroscopy of intraaxial brain tumors(2012-08-01) Alkan, ALPAY; Burulday, Veysel; Oztanir, Namik; Dogan, Metin; ERBAY, MEHMET FATİH; Kocak, Ayhan; Aralasmak, AYŞE; ALKAN, ALPAY; ÖZTANIR, MUSTAFA NAMIK; ARALAŞMAK, AYŞEAim: The purpose of our study was to determine whether the administration of contrast material affects the results of MR Spectroscopy (MRS) in different intraaxial brain tumors.Publication Metadata only Cerebral venous Sinus thrombosis after spinal anesthesia: Case report Spinal Anestezi Sonrasi{dotless} Gelişen Serebral Ven Sinüs Trombozu: Olgu Sunumu(2011-12-01T00:00:00Z) YÜCEL, NESLİHAN; Akgün, Feride Sinem; Tekin, Yusuf Kenan; ALTINAYAR, SİBEL; Alkan, ALPAY; ALKAN, ALPAYPublication Metadata only Neuroimaging depression and anxiety in essential tremor: A diffusion tensor imaging study.(2019-06-27) Sengul, Y; Otcu, H; Ustun, I; Sengul, HS; Cersonsky, T; Alkan, ALPAY; Louis, ED; ALKAN, ALPAYPublication Metadata only Hydrocephalus due to Galen vein aneurysm associated with arteriovenous malformation in an adult patient(2016-01-01) ATASOY, BAHAR; SHARIFOV, RASUL; OTÇU, HAFİZE; ALKAN, ALPAY; ATASOY, BAHAR; SHARIFOV, RASUL; OTÇU TEMUR, HAFİZE; ALKAN, ALPAYPublication Metadata only Sleep Disturbances in Essential Tremor: A pilot investigation of the related brain microstructural changes using diffusion tensor imaging(2019-12-01T00:00:00Z) Alkan, Alpay; ALKAN, ALPAYSengul Y., Otcu H., Ustun I., Sengul H., Alkan A., -Sleep Disturbances in Essential Tremor: A pilot investigation of the related brain microstructural changes using diffusion tensor imaging-, MOVEMENT DISORDERS, vol.34, pp.S829, 2019Publication Metadata only Detecting the Shape Differences of the Corpus Callosum in Behçet-s Disease by Statistical Shape Analysis(2011-05-01T00:00:00Z) ÇOLAK, CEMİL; Ercan, Ilker; Dogan, Metin; Ozdemir, Senem Turan; ŞENER, SERPİL; Alkan, ALPAY; ALKAN, ALPAYPublication Metadata only Evaluation of CSF flow metrics in patients with communicating hydrocephalus and idiopathic intracranial hypertension(2019-05-01) Yilmaz, TEMEL FATİH; Aralasmak, AYŞE; Toprak, HÜSEYİN; MEHDI, Elnur; KOCAMAN, Gulsen; Kurtcan, SERPİL; Kaya, MEHMET ONUR; Alkan, ALPAY; YILMAZ, TEMEL FATİH; ARALAŞMAK, AYŞE; TOPRAK, HÜSEYİN; KURTCAN, SERPİL; KAYA, MEHMET ONUR; ALKAN, ALPAYPurpose To search for CSF dynamics of idiopathic intracranial hypertension (IIH) and communicating hydrocephalus and any correlation between MRI findings, CSF metrics and CSF opening pressure in IIH.Publication Metadata only Diffusion-Weighted Images Differentiate Benign From Malignant Thyroid Nodules(2010-01-01T00:00:00Z) ERDEM, GÜLNUR; Erdem, Tamer; Karakas, Hakki Muammer; Mutlu, Deniz Yakar; Firat, Ahmet Kemal; ŞAHİN, İBRAHİM; Alkan, ALPAY; ALKAN, ALPAYPurpose: To reveal the possible role of diffusion-weighted images (DWI) in the differential diagnosis of benign and malignant thyroid nodules by comparing the results of fine-needle aspiration cytology (FNAC).Publication Metadata only MRI findings in thoracic outlet syndrome(2012-11-01) Aralasmak, AYŞE; ÇEVİKOL, CAN; KARAALİ, KAMİL; Senol, Utku; Sharifov, RASUL; KILICARSLAN, Rukiye; Alkan, ALPAY; ARALAŞMAK, AYŞE; SHARIFOV, RASUL; ALKAN, ALPAYWe discuss MRI findings in patients with thoracic outlet syndrome (TOS). A total of 100 neurovascular bundles were evaluated in the interscalene triangle (IS), costoclavicular (CC), and retropectoralis minor (RPM) spaces. To exclude neurogenic abnormality, MRIs of the cervical spine and brachial plexus (BPL) were obtained in neutral. To exclude compression on neurovascular bundles, sagittal T1W images were obtained vertical to the longitudinal axis of BPL from spinal cord to the medial part of the humerus, in abduction and neutral. To exclude vascular TOS, MR angiography (MRA) and venography (MRV) of the subclavian artery (SA) and vein (SV) in abduction were obtained. If there is compression on the vessels, MRA and MRV of the subclavian vessels were repeated in neutral. Seventy-one neurovascular bundles were found to be abnormal: 16 arterial-venous-neurogenic, 20 neurogenic, 1 arterial, 15 venous, 8 arterial-venous, 3 arterial-neurogenic, and 8 venous-neurogenic TOS. Overall, neurogenic TOS was noted in 69%, venous TOS in 66%, and arterial TOS in 39%. The neurovascular bundle was most commonly compressed in the CC, mostly secondary to position, and very rarely compressed in the RPM. The cause of TOS was congenital bone variations in 36%, congenital fibromuscular anomalies in 11%, and position in 53%. In 5%, there was unilateral brachial plexitis in addition to compression of the neurovascular bundle. Severe cervical spondylosis was noted in 14%, contributing to TOS symptoms. For evaluation of patients with TOS, visualization of the brachial plexus and cervical spine and dynamic evaluation of neurovascular bundles in the cervicothoracobrachial region are mandatory.Publication Metadata only Orucun beyin üzerindeki mikroyapısal etkisinin difüzyon tensör görüntüleme ile değerlendirilmesi(2014-11-16) BAKAN, AYŞE AHSEN; YILDIZ, ŞEYMA; ALKAN, ALPAY; YETİŞ, HÜSEYİN; KURTCAN, SERPİL; İLHAN, MAHMUT MUZAFFER; YILDIZ, ŞEYMA; ALKAN, ALPAY; KURTCAN, SERPİL; İLHAN, MAHMUT MUZAFFER