DWI在急性脑梗死诊断中的应用价值

Applications of DWI in the diagnosis of acute cerebral infarction

目的:探讨磁共振扩散加权成像(DWI)在急性脑梗死诊断中的临床应用价值。方法:总结52例急性脑梗死患者的MRI表现进行分析,并对发病时间进行分期。结果:52例急性脑梗死病例中,超急性期10例,DWI显示新发病灶100%,T1-FLAIR未见显示,T2WI、T2-FLAIR像只有2例部分显示病灶。急性期42例,T1-FLAIR、T2WI、T2-FLAIR及DWI像均能100%显示病灶。在急性期DWI像上较T1-FLAIR、T2WI、T2-FLAIR像上病灶显示更清晰、更直观。结论:DWI技术在急性脑梗死的部位及病程方面较常规MRI优越,对超急性期、急性期脑梗死诊断敏感性高,具有很高的诊断价值。

Objective：To evaluate the clinical value of magnetic resonance diffusion weighted imaging（DWI） in the diagnosis of acute cerebral infarction. Methods：52 patients with acute cerebral infarction underwent DWI were analyzed, staged lesions were by the onset time. Results：lO cases were classified as hyperacute cerebral infarction, and 100% of new displayed on DWI, but there were no abnormal findings on T1-FLAIR, while only two cases were displayed on T2WI and T2-FLAIR. 42 cases were classified as acute cerebral infarction, 100% of lesions were on all sequences （T1-FLAIR, T2WI, T2-FLAIR and DWI）, and displayed clearer and more intuitive on DWI. Conclusion： DWI is superior than conventional MRI for the location and staging of acute cerebral infarction. This technique has a high sensitivity for the diagnosis of hyperacute, acute cerebral infarction.