利用灌注MRI技术评价颈内动脉狭窄或闭塞的血流动力学状态

被引:5
作者
焦力群
凌锋
卢洁
张鸿祺
缪中荣
吉讯明
宋庆斌
张洋
机构
[1] 首都医科大学宣武医院介入中心
[2] 首都医科大学宣武医院介入中心 北京
[3] 北京
基金
国家科技攻关计划;
关键词
颈动脉狭窄; 磁共振成像; 血流动力学;
D O I
10.13437/j.cnki.jcr.2004.10.002
中图分类号
R445.2 [核磁共振成像];
学科分类号
100207 ;
摘要
目的 利用灌注磁共振成像 (PWI)技术分析颈内动脉狭窄或闭塞时的血流动力学特点。资料与方法 搜集 4 6例单侧颈内动脉狭窄或闭塞患者的资料 ,借助PWI对其血流动力学特点进行评价。结果 所有患者局部脑血流量没有显著性降低 ,但大脑中动脉分布区灌注明显延迟 ,在重度狭窄及闭塞时 ,分水岭区的灌注也出现障碍 ;不同的侧支循环代偿仅对大脑中动脉分布区的灌注有所影响 ,其中前交通动脉作用较为明显。结论 单侧颈内动脉狭窄时 ,PWI可以准确评价患者的血流动力学状况 ,而此时的血流动力学障碍与狭窄程度及侧支循环代偿均有明显的关系。
引用
收藏
页码:835 / 838
页数:4
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