磁共振多方位弥散加权成像及表观弥散常数对急性脑干梗死的诊断价值  

The diagnostic values of multidirectional diffusion weighted image and apparent diffusion coefficient in acute braiustem infarction

作　　者：吴海[1] 王作和[1] 余捷[1] 

机构地区：[1]温州市第三人民医院影像科,浙江省温州325000

出　　处：《中国基层医药》2010年第21期2941-2943,3028,共4页Chinese Journal of Primary Medicine and Pharmacy

摘　　要：目的探讨磁共振多方位弥散加权成像（DWI）及表观弥散常数对急性脑于梗死的诊断价值。方法24例急性脑干梗死患者，其中2例超急性期（〈6h）、22例急性期（6—72h）；中脑梗死2例，桥脑梗死21例，延髓梗死l例；均行MRI常规检查、T1WI、T2WI检查，并进行DWI和ADC值测量。结果24例急性脑干梗死中，横轴位T2WI及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13例（54．2％）；T2WI不能清楚显示病灶信号及范围，而横轴位、冠状位、矢状位DWI、ADC图像能明确诊断9例（37．5％）；T2WI阴性、DWI及ADC图像的横轴位不能确定诊断，但在DWI及ADC图像的冠状位、矢状位清晰地显示病灶能够确定诊断2例（8．3％）。结论DWI结合ADC图像，易发现的脑干较低位置的病灶，是目前诊断急性脑于梗死的最佳方法之一。Objective To investigate the diagnostic value of muhidirectional diffusion weighted image （DWI） and apparent diffusion coefficient（ADC） image in acute brainstem infarction. Methods 24 eases of brainstem infarction included 2 eases in super acute stage ,22 eases in acute stage. All cases were performed muhidirectional DWI, ADC and T1WI,T2WI examination including of 2 eases of midbrain ,21 eases of pans and 1 ease of medulla. All of them were accompanied with infarction of other location. Results Among 24 cases there were 13 cases that their lesions displayed clearly and established by transverse T2 WI, transverse ,coronary or sagittal DW1, ADC and the diagnostic accuracy was 54. 2%. In other 9 cases （37.5 % ） could not display the signal and extent of the lesions, but they could be confirmed by transverse ,coronary or sagittal DWI ,ADC. Moreover there were 2 cases （8. 3 % ） who were indicated accurately the diagnosis by coronary,sagittal DWI ,ADC. Conclusion Muhidirectional DWI and ADC could show the location of lesions in the lower brainstem so the multidireetional DWI and ADC scan could be an excellent method for the diagnosis of the brainstem infarction.

关 键 词：磁共振成像弥散 脑干梗塞 

分 类 号：R74[医药卫生—神经病学与精神病学] R44[医药卫生—临床医学]