磁共振弥散成像对急性脑梗死的诊断价值

目的探讨磁共振弥散成像对超急性、急性脑梗死的诊断价值。方法对80例疑似急性期脑梗死患者,行磁共振常规T1WI、T2WI、水抑制序列(FLAIR)、弥散加权扫描(DWI)。结果80例中,超急性期脑梗死10例,急性期32例,超急性期、急性期脑梗死在DWI上表现为高信号,T2WI上为等信号或部分稍高信号,ADC图上表现为低信号。MRI扫描未见异常2例。结论磁共振弥散成像对超急性期、急性期脑梗死病变较常规MRI敏感,在多发梗死灶中可以发现责任病灶、为临床选择治疗方案提供依据。

Diagnostic Value of Diffusion-weighted Magnetic Resonance Imaging in Acute Cerebral Infarction

Objective To investigate the value of diffusion-weighed magnetic resonance imaging(MRI) in the diagnosis of super-acute and acute cerebral infarction.Methods Eighty cases of suspected super-acute and acute cerebral infarction were scanned using conventional MRI T1WI,T2WI,FLAIR and DWI(diffusion-weighed imaging).Results In the 80 cases,there were 10 super-acute,32 acute and 2 normal ones.Super-acute and acute cerebral infarction appeared as the areas of high intensity on DWI,normal or slightly high intensity on T2WI,and low intensity on ADC mapping.Conclusion Compared with conventional MRI,diffusion-weighed MRI is sensitive to super-acute and acute cerebral infarction.In multi-infarcted lesions,acute lesions can be distinguished from non-acute ones,and the lesion site of responsibility can be detected.It contributes to provide the basis for the clinical treatment programs.