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单侧大脑中动脉狭窄的脑磁共振灌注成像研究
引用本文:徐嘉璐,陆建平,刘崎,黄文才,陈鑫璞.单侧大脑中动脉狭窄的脑磁共振灌注成像研究[J].中国临床神经外科杂志,2010,15(4):215-218.
作者姓名:徐嘉璐  陆建平  刘崎  黄文才  陈鑫璞
作者单位:1. 第二军医大学长海医院影像科,上海,200433
2. 第二军医大学长海医院神经外科,上海,200433
摘    要:目的探讨大脑中动脉(MCA)不同狭窄程度时的脑磁共振灌注加权成像(PWI)表现。方法对31例经DSA诊断为单侧MCA狭窄或闭塞患者行脑磁共振PWI检查,并对不同程度MCA狭窄状态下患侧和健侧大脑半球的脑灌注参数局部脑血流量(rCBF)、局部脑血容量(rCBV)、局部平均通过时间(rMTT)、局部达峰时间(rTTP)进行定量分析。结果31例患者中,DSA诊断单侧MCA轻中度狭窄14例,其中脑灌注异常11例;患侧大脑半球rTTP较健侧显著延长(P0.01)。MCA重度狭窄或闭塞17例,均出现异常灌注;患侧大脑半球rTTP较健侧显著延长(P0.01),而患侧rCBF较健侧明显减少(P0.05),患侧rMTT健侧亦显著延长(P0.05)。结论通过脑灌注成像参数综合分析,磁共振PWI能准确评估MCA狭窄程度和脑组织血供情况,可为脑缺血的临床诊断提供重要价值。

关 键 词:大脑中动脉  狭窄  脑缺血  磁共振成像  灌注成像

Brain magnetic resonance perfusion-weighted imaging in patients with unilateral middle cerebral artery stenosis
XU Jia-lu,LU Jian-ping,LIU Qi,HUANG Wen-cai,CHEN Xin-pu.Brain magnetic resonance perfusion-weighted imaging in patients with unilateral middle cerebral artery stenosis[J].Chinese Journal of Clinical Neurosurgery,2010,15(4):215-218.
Authors:XU Jia-lu  LU Jian-ping  LIU Qi  HUANG Wen-cai  CHEN Xin-pu
Institution:XU Jia-lu,LU Jian-ping,LIU Qi,HUANG Wen-cai,CHEN Xin-pu.Department of Imagiology,Changhai Hospital,the Second Military Medical University,Shanghai 200433,China
Abstract:Objective To evaluate the manifestation of the cerebral ischemia caused by stenosis or occlusion of middle cerebrala rtery(MCA)on magnetic resonace(MR)perfusion-weighted imaging(PWI).Methods MR PWI were performed in 31 patients withu nilateral stenosis or occlusion of MCA diagnosed by DSA.The cerebral perfusion parameters including regional cerebral blood volume( rCBV),regional cerebral blood flow(rCBF),regional mean transit time(rMTT)and regional time to peak(rTTP)of the both the cerebralh emispheres were ...
Keywords:Middle cerebral artery  Stenosis Arteriosclerosis  Magnetic resonance imaging  Perfusion-weighted imaging  
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