刘清萍,陈俊抛,吴宏

• 1:广东省第二人民医院神经内科

摘要(Abstract)：

目的探讨MRI所示的后循环梗死灶与DSA发现的椎基底动脉狭窄的相关性。方法回顾分析30例后循环梗死患者的临床资料,将每例后循环梗死患者头部MRI发现的梗死灶与DSA所见的椎基底动脉狭窄血管进行对照。结果 MRI示单发性梗死22例(其中脑干梗死10例,小脑梗死8例,丘脑梗死2例,枕叶梗死2例),多发性梗死8例。DSA发现大动脉狭窄19例[包括单纯椎动脉近段(V1)狭窄、椎动脉V1段狭窄伴颅内段狭窄、椎动脉颅内段狭窄、基底动脉狭窄及锁骨下动脉狭窄],与之对应的MRI发现的梗死部位位于小脑下后动脉(PICA)供血区、小脑下前动脉(AICA)供血区、小脑上动脉(SCA)供血区及大脑后动脉(PCA)供血区,以小脑下后动脉(PICA)供血区多见。分支动脉狭窄9例,与之对应的MRI发现的梗死部位位于PICA、AICA、SCA及PCA供血区。2例DSA椎基底动脉未见明显异常,头部MRI见PICA和AICA供血区有多发性小梗死灶。结论后循环梗死的MRI表现与椎基底动脉狭窄性病变部位具有相关性。大动脉狭窄的病例中,椎动脉V1段狭窄最常见,其梗死部位多位于PICA供血区。通过MRI检查,早期明确后循环梗死的部位和范围,可能推测导致梗死的病变血管。

关键词(KeyWords)： 后循环梗死;椎基底动脉狭窄;磁共振成像;脑血管造影术

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刘清萍,陈俊抛,吴宏

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