低场MRI在超急性脑梗死中的应用价值

Application of low field MRI to hyperacute cerebral infarct

目的评价DWI扩散成像序列在超急性脑梗死中的应用价值。方法对60例脑梗死患者进行SE序列T1加权、T2加权及FLAIR序列和DWI序列扫描,比较T2加权、FLAIR序列、DWI序列在显示脑梗死病灶中的差异。结果39例病人在T2加权共显示病灶172个,FLAIR像共显示病灶286个,而21例超急性脑梗死患者的26个病灶,是在行DWI扫描时才清楚的显示出其内部结构,边界及形态的大小,最终被确诊为超级性脑梗死。结论低场MRI中的DWI像对超急性脑梗死的诊断有很大的实用价值。

Objective To evaluate the value of application of Diffusion Weighted Imaging （DWI） sequences in hyperacute cerebral infarct. Methods T1WI, T2WI with SE sequence, and scanning using FLAIR and DWI sequences were performed in 60 cases with cerebral infarct to compare the differences among T2WI, FLAIR sequerce and DWI sequence displaying the lesion. Results There were 172 lesions on the T2-weighted images and 286 lesions in 39 cases on the FLAIR images. The 26 lesions in the 21 cases with hyperacute cerebral infarct were detected with the DWI scanning, Hyperacute cerebral infarct was finally diagnosed because the DWI images showed the inter-structure and the borders of 26 lesions very clearly. Conclusion Low Field MRI is of practical value to the diagnosis of hyper acute cerebral infarct.