后循环缺血患者椎基底动脉狭窄的MRA与DSA对照分析

摘要

Objective:To discuss the value of MRA and DSA in diagnosis of vertebral-basilar artery stenosis in the patients of posterior circulation ischemia.Method:56 posterior circulation ischemia patients suggested vertebral-basilar artery stenosis in MRA were treated with DSA,and compared the conformability of MRA and DSA.Result:The conformability of MRA was 80.6%,21.4%,75%,0 and 0 in diagnosis of typeⅡ,typeⅢtypeⅣ,typeⅤand typeⅥvertebral artery abnormality,and 83.3%in diagnosis of typeⅡbasilar artery abnormality.Conclusion:Patients of posterior circulation ischemia should be treated with DSA if MRA suggests typeⅡandⅣvertebral artery stenosis,and typeⅡbasilar artery stenosis,other types can not be treated with DSA.%目的：探讨MRA与DSA在后循环缺血患者椎基底动脉狭窄诊断中的价值。方法：对56例MRA提示椎基底动脉狭窄的后循环缺血患者进行DSA检查，观察两者影像学诊断的符合情况。结果：56例患者中MRA提示椎动脉异常中Ⅱ型异常与DSA符合率为80.6%，Ⅲ型异常两者符合率为21.4%，Ⅳ型异常两者符合率为75.0%，Ⅴ型、Ⅵ型异常两者符合率为0，基底动脉异常中Ⅱ型异常与DSA符合率为83.3%。结论：后循环缺血患者椎动脉MRA检查发现符合Ⅱ型、Ⅳ型异常及基底动脉MRA检查发现符合Ⅱ型异常严重者应考虑DSA检查，必要时行介入治疗，其他类型异常一般可不行DSA进一步检查。