DWI/MRI对脑干梗死的诊断价值

目的探讨磁共振弥散加权成像(DWI)技术对脑干梗死的诊断应用价值。方法回顾性分析49例脑干梗死患者的临床及MRI(T1WI、T2WI、FLAIR、DWI序列)的影像学表现。结果49例脑干梗死患者共检出病灶74个,其中49个为新发脑干责任病灶,25个为陈旧病灶。新发脑干责任病灶中,T1WI显示病灶38个,阳性率77.6%;T2WI显示病灶49个,阳性率100%,FLAIR显示病灶49个,阳性率100%,T2WI和FLAIR不能判断病灶的发生时间;DWI显示病灶42个,阳性率85.7%。25个陈旧病灶均呈长T1长T2信号,FLAIR高信号,DWI未见信号改变。结论DWI技术在显示脑干梗死的部位以及判断病程方面,较常规MRI优越。

Diagnostic value of DWI/MRI for brainstem infarction

Objective To investigate the diagnostic value of DWI/MRI for brainstem infarction.Methods The clinical symptoms and image menifestations made by MRI(T1WI,T2WI,FLAIR,DWI sequence)in 49 patients with brainstem infarction were respectively analyzed.Results There were 74 focus in 49 patients,including 49 new lesions and 25 old lesions.T1WI showed 38 lesions among all the new lesions.The detection rate was 77.6%.T2WI showed 49 lesions in all the new lesions.The detection rate was 100%.FLAIR showed all new lesions,and detection rate was 100%.But T2WI and FLAIR couldn't identify the pathogenic time of the lesions.DWI showed 42 new lesions of all new lesions,and detection rate was 85.7%,all the 25 old lesions showed long T1 and long T2 signal,FLAIR showed high signal and no signal changes showed on DWI.Conclusion DWI is superior to conventional MRI in detecting the lesions and evaluating the course of disease.