DWI在诊断急性脑梗死中的应用价值

目的探讨磁共振弥散加权成像（DWI）在诊断急性脑梗死的应用价值。方法对30例临床高度怀疑急性脑梗死的患者进行常规磁共振T1WI、T2WI、Dark-fluid及DWI扫描，并根据发病时间进行分组，比较病变在不同序列像上的显示率、边界及范围，分别测量、计算其ADC值和rADC值。结果DWI对病灶的显示率、边界以及范围均优于常规T1WI、T2WI和Dark-fluid成像；所有病例病灶的ADC值与rADC值均下降。结论DWI技术对急性脑梗死敏感度高，具有很高的诊断价值。

The value of DWI in diagnosis of acute cerebral infarction

Objective： To explore the diagnostic value of DWI in acute cerebral infarction. Methods： Thirty patients suspected of cerebral infarction were examined with T1WI,T2WI,Dark-fluid and DWI sequences and were grouped on the basis of case history. The manifestations of lesions, boundary and extent on all images were compared. ADC and rADC of the lesions were respectively measured and calculated. Results： The manifestations of lesions, boundary and extent on DWI were superior to those of convertional T1WI, T2WI, and dark-fluid image, and the value of ADC and rADC of the lesions decreased in all eases. Conclusion： DWI is highly sensitive and applicabole in the diagnosis of acute cerebral infarction.