急性脑梗死122例的低场强磁共振弥散加权成像特征分析

Clinical application of low field MR diffusion weighted imaging(DWI) to acute cerebral infarction

目的探讨急性期脑梗死低场强磁共振弥散加权成像(diffusion weighted imaging,DWI)特征。方法用磁共振弥散成像诊断超急性期、急性期、亚急性脑梗死122例,并与常规MRI的T2WI进行比较。结果超急性、急性和亚急性脑梗死在DWI上均表现为高信号。仅46例急性脑梗死在T2WI、FLAIR显示异常信号。结论在急性期脑梗死影像诊断中,DWI可作为除外新发脑梗死的主要手段之一。

Objective To explore clinical role of low field MR DWI in acute cerebral infarction. Methods 122 cases of su- per-acute, acute and sub-acute cerebral infarction patients were diagnosed in MRI DWI imaging and compared with regular MRI T2WI. Results Super acute, acute, sub acute infarction all showed hyperintensity on DWI, Only 46 cases showed abnormal in T2WI,FLAIR. Conclusion DWI is able to play aprincipal role in excluding possibility of new onset of cerebral infarction.