大脑中动脉闭塞后大脑后动脉侧支供血的MRA研究

被引:10
作者
袁东升 [1 ]
孙培芳 [1 ]
梁长虹 [2 ]
黄飚 [2 ]
刘红军 [2 ]
机构
[1] 深圳市西丽人民医院放射科
[2] 广东省人民医院医学影像中心
关键词
大脑中动脉; 磁共振成像; 颅内栓塞;
D O I
10.13609/j.cnki.1000-0313.2008.06.009
中图分类号
R743.3 [急性脑血管疾病(中风)];
学科分类号
1002 ;
摘要
目的:研究大脑中动脉闭塞后侧支供血的3DMRA表现。方法:回顾性分析大脑中动脉供血区脑梗死患者75例,均行MRI和3DTOFMRA,着重观察MRA中的侧支代偿供血情况。结果:75例患者3DTOFMRA均发现大脑中动脉起始段(M1)闭塞,同侧的大脑后动脉颞下后支及距状裂和顶枕动脉段出现增粗、延长、分支增多的表现,而多数患者同侧的大脑前动脉走行方向、管径粗细、分支情况则无明显变化。结论:大脑中动脉M1段闭塞后,MRA示同侧大脑后动脉主干及分支有显著改变,说明闭塞区的代偿血供是以大脑后动脉通过柔脑膜毛细血管网的侧支循环为主。
引用
收藏
页码:622 / 624
页数:3
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