Özet:

INTRODUCTION: The purpose of this study is to discuss the place of CT in the diagnosis of CVST, and evaluate relevant CT findings. METHODS: Nonenhanced cranial CT scans of 27 patients with the diagnosis of cerebral venous sinus thrombosis established by MR venography (MRV) was evaluated, retrospectively. Age, gender, clinical findings, etiology of 27 patients were interrogated. RESULTS: Total of 27 cases consisted of 16 females and 11 males. 23 of them had headache which was-evaluated as the most frequently seen symptom. 12 (44 %) cases had hemiparesia or hemianopsy, 9 (33 %) of them had status epilepticus, 9 (33 %) of them had papiloedema, 5 of them had mental disorder In 18 (66.6 %) of the patients had an etiologic factor, while on the other hand 9 (33.3 %) of them did not have any known etiology. 38 incidents of cerebral sinus thrombosis were found in 27 patients. The locations of 38 cerebral sinuses were as follows: superior sagittal sinus (-n=13); transverse sinus. (-n=17) sigmoid sinus (n=6); cavernous sinus (n=2). In 8 % of the patients thrombosis was observed in more than one cerebral sinuses. Nonenhanced cranial CT of 8 of 27 patient did not demonstrate any evidence of venous sinus thrombosis and CT investigations wwere evaluated as normal. Parenchymal changes -(indirect finding) and density changes (direct finding) in thrombotic sinuses were observed in 19 patients. During CT investigation evidences were found 100 % of the patients which had occlusions in more than one sinuses. 57,8 % of the evindences was evaluated as indirect evidences. DISCUSSION AND CONCLUSION: CT investigations are the preferred first choice for the establishment of CVST diagnosis in addition to this it has been observed that CT investigations (methods) have lower diagnostic sensitivities for CVST and additional imaging methods are required. In CT investigation parenchymal changes are the most frequent findings in 40,7 % of cases.

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