MRI多方位扩散加权成像在脑干梗塞中的应用  

The application value of multidirectional MRI diffusion weighted image in acute brainstem infarction

作　　者：姜涛[1] 林雅明[1] 林依东[1] 邓倩[1] 周建敏[1] 田维泽[1] 

机构地区：[1]山东省莱州市人民医院MRI室,261400

出　　处：《实用心脑肺血管病杂志》2007年第4期276-279,共4页Practical Journal of Cardiac Cerebral Pneumal and Vascular Disease

摘　　要：目的探讨MRI多方位扩散加权成像在脑干梗塞中临床应用价值。方法回顾性分析55例脑干梗塞经多方位DWI扫描的临床及影像学资料。其中,桥脑38例,中脑14例,延髓11例,脑干多发性梗塞8例。超急性期18例,急性期24例,亚急性期9例,慢性期4例。结果55例脑干梗塞中,T2WI和DWI的横轴位、冠状位、矢状位均能清晰地显示病灶并能确定诊断19例,约占34.54%。不能依靠T2WI确诊,而在DWI的横轴位、冠状位、矢状位三个方位清晰地显示病灶并能确定诊断27例,约占49.09%。T2WI表现为阴性,DWI的横轴位不能确定诊断,但在DWI的冠状位、矢状位清晰地显示病灶能够确定诊断9例,约占16.36%。脑干不同部位、不同时期梗塞病灶在DWI有一定的特点。结论多方位的DWI扫描,能够呈现出脑干的立体结构,比较全面地显示了病灶的形态、范围及部位,避免了单向观察脑干的局限性,是目前诊断脑干梗塞的最佳方法之一。Objective To evaluate the application value of muhidirectional MRI diffusion weighted image（DWI） in acute brainstem infarction. Methods Fifty-five patients with acute brainstem infarction underwent muhidirectional DWI scan, their images and clinical data were reviewed retrospectively, including 38 cases of pons,14 cases of midbrain,ll cases of medulla and 8 cases of multiple brainstem infarction.Among all cases,18 cases in hyperacute stage, 24 cases in acute stage, 9 cases in subacute stage and 4 cases in chronic stage. Results Among 55 patients there were 19 cases that their foci displayed clearly and established by T2WI （transverse DWI,coronary DWI or sagittal DWI） and the diagnostic accuracy was 34.54%（19/55）. In other 27 cases [49.09%（27/55）]their foci could not be displayed by T2WI, but they could be confirmed by transverse DWI,coronary DWI and sagittal DWI. moreover there were 9 cases [16.36%（9/55）] who were indicated accurately the diagnosis by coronary DWI and sagittal DWI. Conclusion Muhidirection DWI can show the stereo-structure of the brainstem,and the focusmorphous, extenst and location of the infarction, so the muhidirectional DWI scan may be an excellent method for the diagnosis of brainstem infarction.

关 键 词：磁共振 扩散加权成像 多方位 脑干梗塞 

分 类 号：R743.33[医药卫生—神经病学与精神病学]