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Permanent URI for this collectionhttps://hdl.handle.net/11443/932
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Item Functional Reorganization in the Primary Somatosensory Cortex of Rat Following Hind-Paw Amputation: A Study of Functional Imaging with 1.5 Tesla MRI(TURKISH NEUROSURGICAL SOC, 2020-01-01) Eksi, Murat Sakir; Ozcan Eksi, Emel Ece; Arslanhan, Ayca; Sirinoglu, Hakan; Erbil, Sertac; Gungor, Abuzer; Algin, Oktay; Konya, DenizAIM: To learn how rat primary somatosensory cortex (pSSC) responses to the loss of inputs from hind-paw, using fMRI of an inferior magnetic power (1.5 Tesla) with special designed high-powered rat coil. MATERIAL and METHODS: Ten adult male Sprague-Dawley rats were enrolled in this study. The rats were anesthetized with ketamine injection. Xylazine was intraperitoneally injected for analgesia and muscle relaxation with careful maintenance of spontaneous respiration. Either right or left hind-paws were amputated under aseptic conditions according to predefined random allocation of the rats. A 12-channel rat surface coil developed for proper image resolution in 1.5 Tesla MR was used. Functional magnetic resonance imaging was obtained before hind-paw amputationItem Shunt Valve Rupture in Ventriculoperitoneal Shunt Failure(ELSEVIER SCIENCE INC, 2021-01-01) Guduk, Mustafa; Akbas, Ahmet; Tuzunalp, Muruvvet Ayten; Berikol, Gurkan; Eksi, Murat SakirBACKGROUND: Shunt complications are common despite advances in surgial techniques and shunting technology. Proximal and/or distal catheter malfunctions are detected in pediatric and adult patients. However, valve dysfunction is rare in such cases. CASE DESCRIPTION: A 24-year-old woman presented with a history of veotriculostomy and ventriculoperitoneal shunt (VPS) secondary to hydrocephalus concomitant with Dandy-Walker syndrome. She has had undulant headache and vision loss episodes in both eyes for 15 days. Her VPS valve was normal when manually checked, and the VPS was observed as intact on x-ray and computed tomography scan. She had high-grade papilledema in both eyes with an optical coherence tomography scan value of 55/99. Lumbar puncture was performed. Cerebrospinal fluid opening pressure was 560 mm H2O under sedation. VPS exploration surgery was performed. There was a tiny defect over the shunt valve from where clear cerebrospinal fluid was leaking. We revised the old VPS valve with a new valve of 1.5 regular pressure. Her vision improved shortly after the surgery. CONCLUSIONS: This case is a very rare example of shunt valve dysfunction that required further investigation and a new valve replacement even though the preoperative imaging was normal.Item The Carotid Endarterectomy Cadaveric Investigation for Cranial Nerve Injuries: Anatomical Study(MDPI, 2021-01-01) Cevik, Orhun Mete; Usseli, Murat Imre; Babur, Mert; Unal, Cansu; Eksi, Murat Sakir; Guduk, Mustafa; Ovalioglu, Talat Cem; Aksoy, Mehmet Emin; Pamir, M. Necmettin; Bozkurt, BaranCerebral stroke continues to be one of the leading causes of mortality and long-term morbidity