16层螺旋CT血管造影在Moyamoya病诊断中的价值

目的探讨16层螺旋CT血管造影（MSCTA）在Moyamoya病诊断中的应用价值。方法17例Moyamoya病患者均行CT平扫和MSCTA检查，在ADW4．2工作站上作容积再现（VR）、最大密度投影（MIP）和多平面容积重建（MPVR）。结果MSCTA均清晰显示发生狭窄、闭塞的颈内动脉、Willis环血管近侧端以及明显增多、扩张的脑底部侧支血管影，其中双侧颈内动脉闭塞6例，单侧颈内动脉闭塞伴同侧大脑后动脉狭窄1例，单侧大脑中动脉闭塞10例，其中1例伴微小动脉瘤。侧支血管表现为相应血管及其分支的粗大、增多、迂曲延长。结论MSCFA可以清晰显示Moyamoya病血管改变特点，检查方法简单、快捷，重建图像直观显示病变周围空间结构关系，可为诊断和临床治疗提供重要的参考依据。

Moyamoya disease: the value of 16- slice spiral CT angiography for diagnosis

Objective To evaluate the use of 16-slice spiral CT angiography(MSCTA) in the diagnosis of moyamoya disease.Methods CT routine scan and MSCTA volume scanning were performed in 17 patiants.The angiograms obtained were processed on the ADW4.2 workstation to perform volume rending(VR),maximum intensity projection(MIP) and multiplanar volume reformation(MPVR).Results In all of the 17 patients,MSCTA showed varied lesions of stenosis and obstruction in arteria carotis interna(ICA),proximum of Willis' circle and posterior and middle cerebral arteries;abnormal vessel network in the basal part of brain;and the condition of collateral circulation in the brain.Conclusion MSCTA could well display the abnormal vessels and spatial relationship characteristic of moyamoya disease,providing important reference for the diagnosis and therapy.