急性脑梗死中弥散加权像和液体衰减反转恢复序列的诊断价值

目的探讨弥散加权像(DWI)和液体衰减反转恢复(FLAIR)序列在急性脑梗死诊断中的应用价值。方法 120例急性脑梗死患者纳入研究,全部行常规T1WI、T2WI、FLAIR、DWI扫描,检查评价病变的显示度及检出率。结果影像学对比发现FLAIR序列和DWI对病变的显示范围,均优于常规T1WI、T2WI,以DWI对病变显示更佳;在超急性期患者中,DWI序列的检出率为100.00%,显著高于FLAIR序列的23.81%(P<0.01),T1WI、T2WI序列未见检出;在急性期患者中,DWI序列、FLAIR序列的检出率均为100.00%,均显著高于T1WI、T2WI序列的79.48%(P<0.01)。结论在超急性期,DWI序列具有高敏感性;急性期则DWI和FLAIR序列的敏感性均较高,两者联合使用,可准确可靠地诊断早期脑梗死。

The diagnostic value of DWI and FLAIR sequences in acute cerebral infarction

Objective To investigate the application value of DWI and FLAIR sequences in the diagnosis of acute cerebral infarction.Methods 120 cases with acute cerebral infarction were scanned by conventional MRI T1WI,T2WI,FLAIR,DWI.The visibility of lesions and the detection rates were reviewed and evaluated.Results The imaging comparison indicated that the lesion range FLAIR and DWI displayed was better than that T1WI,T2WI,and DWI lesions showed.For patients with super-acute infarction,the detection rate of DWI was 100%,which was higher than that of FLAIR,23.81%.T1WI and T2WI were not able to detect the lesions.For patients with acute infarction the detection rates of DWI and FLAIR were both 100.00%,while those of T1WI,T2WI were all 79.48%.Conclusion DWI sequences have high sensitivity for detecting super-acute cerebral infarction.DWI and FLAIR sequences can be used in combination for detecting acute cerebral infarction because they can provide accurate and reliable diagnosis of early cerebral infarction.