胼胝体梗死的MRI表现及其诊断价值  

Corpus callosal infarction:appearances and diagnostic value of MR imaging

作　　者：邹杰[1] 王百军[1] 李林[1] 

机构地区：[1]铁路局中心医院放射科,沈阳110032

出　　处：《放射学实践》2003年第10期709-711,共3页Radiologic Practice

摘　　要：目的 :探讨胼胝体梗死的MRI表现特征及其诊断价值。方法 :在连续 2年颅脑MRI检查中搜集 5 69例脑梗死病例 ,对其中有胼胝体梗死的 3 6例进行回顾性分析。全部病例均行SE与TSE序列T1 WI、T2 WI扫描 ,15例加FLAIR序列扫描 ,13例行钆喷替酸葡甲胺 (Gd DTPA)增强扫描。结果 :5 69例脑梗死中 3 6例 ( 6.3 %)MRI确诊为胼胝体梗死。其中 3例为单纯胼胝体梗死 ,3 3例同时伴其它部位脑梗死。 3 6例共 45个梗死灶 ,位于胼胝体膝部 19个 ,体部 15个 ,压部 10个 ,膝 体部 1个。T1 WI呈略低信号 2 6个 ,低信号 19个 ,T2 WI均呈高信号 ;15例FLAIR序列 11例呈高信号 ,4例呈低信号 ;13例增强扫描 9例强化。结论 :胼胝体梗死少见。MRI可清楚显示胼胝体梗死的存在、部位与范围 ,但缺乏特征性 。Objective:To investigate the features and diagnostic value of MRI in corpus callosal infarction.Methods:MRI features of 36 patients with corpus callosal infarction were retrospectively analyzed,which were selected from 569 consecutive cranial MR scans showing cerebral infarcts.SE and TSE sequences were performed on all 36 cases,FLAIR on 15 of them,Gd DTPA enhancement examinations were performed in 13 cases.Results:Of 569 patients with cerebral infarcts collected during the 24 months,36 patients (6.3%) had a MRI identificable callosal infarction.In 3 cases the infarction located only in the corpus callosum,in 33 cases the lesion associated with cerebral infarct in other location.Totally 45 lesions were found in 36 cases,The lesions appear slight hypointense (26) or hypointense (19) on T 1WI,all of them appear hyperintense on T 2WI and some hyperintense or hypointense on FLAIR.Conclusion:Infarcts of the corpus callosum are not common.MRI can clearly reveal the lesions,their location and extent.But MRI findings of corpus callosal infarction are nonspecific,definite diagnosis of corpus callosal infarction depends on combination of clinical data and existence of infarction in the other area of brain.

关 键 词：胼胝体梗死 MRI 诊断 钆喷替酸葡甲胺 增强扫描 

分 类 号：R445.2[医药卫生—影像医学与核医学]