320排动态减影CT血管成像在烟雾病诊断中的价值

Evaluation of 320-Detector Row Dynamic Subtracted CT Angiography in the Diagnosis of Moyamoya Disease

目的评价320排动态减影CT血管成像在烟雾病诊断中的临床应用价值。方法对28例烟雾病患者进行320排动态减影CT扫描后进行减影,成像方法为容积再现技术和最大密度投影,重点评价脑内血管狭窄、闭塞的显示、脑底部异常增生血管和侧支血管等。结果 28例患者的320排动态减影CT血管成像图像均显示不同程度的脑血管狭窄和闭塞,其中21例患者为双侧有病变,另外7例患者为单侧有病变;23例患者脑底部出现异常血管网;20例患者可见增粗的侧支动脉。4例患者同时合并有脑动脉瘤。结论 320排动态减影CT血管成像对于烟雾病的特征显示良好,可以作为烟雾病诊断的首选影像检查。

Objective To assess the clinical value of 320-detector row dynamic subtracted CT angiography in detecting movamoya disease. Methods 28 cases with mogamova disease received 320-detector row dynamic CT scan, and all the ori~,,-inal datas were processed with subtraction methold, maxinmm-intensitv projections and w^lmne-rendering techniques. 320- detector row dynamic subtracted CT angiographic images were focused on evaluation uf cerebral vascular stenosis and occlusion, abnormal hvperplasia of the brain blood vessels and collateral vessels, etc. Results 320-detector row dynamic subtracted CT angiographic im- ages of 28 patients showed different degree of cerebral vascular stenosis and occlusion, includ- ing 21 patients with bilateral lesions and 7 patients with unilateral lesions; 23 patients with abnormal vascular network in the base o~ the brain; 20 patients with enlargement of collateral arteries. Four patients had cerebral aneurysms at the same time. Conclusion 320-detector row dynamic subtracted CT angiographv can well display the characteristics of moyamova disease, and should be the first line imaRing technique for the detection of moyamova disease.