【摘要】 目的 研究低场强磁共振弥散加权成像对急性期脑梗死的应用价值。方法 23例急性期脑梗死患者，进行常规MR和弥散加权成像检查，并做表现弥散系数(ADC)图，比较病灶中心和对侧相应区正常组织的ADC值。结果 23例急性期脑梗死患者，弥散加权图像和ADC图均显示梗死灶，其中13例患者T2加权像显示病灶，显示率为57%，10例患者T2加权像表现正常。23例患者病灶中心的ADC值低于对侧相应区，经配对t检验，t=17.37，P<0.01。结论 弥散加权成像能显示急性期脑梗死灶，ADC图能够进行定量分析，有助于临床早期诊断和治疗。

    【关键词】 低场强；磁共振弥散加权成像；脑梗死；急性期

    Value of low field intensity MR diffusion weighted imaging in evaluating acute cerebral infarction

    XU De-fu，LU Jie，LI Kun-cheng，et al.

    Department of Radiology，Changji People Hospital，Xin Jiang 831100，China

    【Abstract】 Objective To evaluate the value of low field intensity Diffusion-weighted MR imaging(DWI)in acute cerebral infarction.Methods DWI and spin echo T2-weighted imaging(T2WI)were performed in 23 patients with acute cerebral infarction.ADC maps were obtained and the values of ADC were measured in all patients.The difference of ADC was compared between lesion focus and corresponding site in contrast side.Results DWI and ADC map identified acute ischemic lesions in 23 patients ......