硬膜動静脈ろうにおける上眼静脈Ｄｏｐｐｌｅｒ血流検査所見

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  • Superior Ophthalmic Vein Color Doppler Flow Imaging in Dural Arteriovenous Fistulas

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An attempt was made to evaluate the findings of color Doppler flow imaging (CDFI) of the superior ophthalmic vein (SOV) in relation to clinical features and angiographic findings in 20 patients with intracranial dural arteriovenous fistula (DAVF) .<BR>CDFI studies provided information about the size, flow direction and pulsed Doppler wave curve (waveform) of the SOV in each case. The mean diameter of the SOV was 3.13 mm which was significantly (p<0.05) wider than in normal controls. The flow direction was reversed in one patient, and was normal in the other 19 patients. A reversed pulsatile waveform was observed in one patient, a normograde inverse pulsatile waveform in four and a normal waveform in 15. The patients with clinical symptoms or angiographically retrograde cortical venous filling showed dilatation of the SOV. There was no significant difference in SOV CDFI findings according to the location of the lesion. Surgical removal was performed in 14 patients. Postoperatively, the abnormal SOV CDFI findings improved significantly.<BR>The SOV CDFI findings in the DAVFs correlated well with the clinical symptoms, angiographic findings and surgical results, and these data were useful for evaluation of intracranial venous hemodynamics and also follow-up studies. DAVFs indicating a dilated SOV with an abnormal flow direction and abnormal waveform in SOV CDFI studies were seen in patients with clinical symptoms or retrograde cortical venous filling on angiography.

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