烟雾病 CT 血管成像和脑血管数字减影血管造影的特点分析

目的：比较烟雾病患者CT血管成像（ CTA）和脑血管数字减影血管造影（ DSA）的影像特点。方法根据29例烟雾病患者CTA和DSA的影像表现，将CTA和DSA发现的狭窄或闭塞的血管、异常增生血管、代偿血管的情况分别进行统计学分析和比较。根据烟雾病患者的DSA影像结果将29例烟雾病患者的57个病变半球进行铃木分期和统计分析。结果29例烟雾病患者中，CTA和DSA在发现大血管狭窄、闭塞（CTA 53个半球，DSA 57个半球）（χ2＝2．167，P＞0．05）以及显示异常增生血管（发现异常增生血管：CTA 41个半球，DSA 45个半球；未发现异常增生血管：CTA 16个半球，DSA12个半球）（χ2＝0．757，P＞0．05）方面差异无统计学意义，但是在显示烟雾病代偿情况方面CTA不如DSA。结论 CTA可以作为烟雾病有效的筛查手段，但是DSA可以动态观察颅内血管代偿情况、代偿程度，明显优于CTA，且能为进一步手术治疗提供更为详尽的血管情况。

Digital subtraction angiography and computed tomography angiography of moyamoya disease

Objective To compare the characteristics of digital subtraction angiography （ DSA） and compu-ted tomography angiography （ CTA） of moyamoya disease .Methods To analyze the characteristic of DSA and CTA in 29 cases with moyamoya disease ,including arterial occlusion ,arteriarctia,abnormal proliferation of vascular ,collat-eral circulation.Results There were no statistically significant differences between DSA and CTA in detecting arteri-al occlusion,arteriarctia（CTA 53 hemicerebrum,DSA 57 hemicerebrum）（χ2 =2.167,P〉0.05）,abnormal prolifera-tion of vascular （abnormal：CTA 41 hemicerebrum,DSA 45 hemicerebrum;normal：CTA 16 hemicerebrum,DSA 12 hemicerebrum）（χ2 =0.757,P〉0.05）.But there was statistically significant difference between DSA and CTA in detecting collateral circulation .Conclusion CTA is a good method to find out moyamoya disease .But DSA is better in discovery collateral circulation of moyamoya disease .