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目的:探讨MRI弥散加权成像诊断再发脑梗死的价值。方法:急性再发脑梗死患者30例,于发病第3～7天行MRI弥散加权成像、T2WI、FLAIR序列扫描,记录各序列扫描结果显示的高信号病灶数量,并结合临床症状体征明确本次发病的责任病灶。结果:弥散加权成像序列显示病灶30个,均为责任灶,责任病灶显示率100%,显示特异性100%;T2WI序列扫描显示病灶105个,其中责任灶28个,责任病灶显示率93.3%,显示的特异性为26.7%;FLAIR序列扫描显示病灶75个,其中责任灶29个,责任病灶显示率96.7%,显示的特异性为38.7%。结论:MRI弥散加权成像诊断再发脑梗死的急性期责任病灶敏感而特异。
Objective: To investigate the value of MRI diffusion-weighted imaging in the diagnosis of recurrent cerebral infarction. Methods: Thirty patients with acute recurrent cerebral infarction were examined by MRI diffusion weighted imaging, T2WI and FLAIR sequences on the 3rd to 7th days after the onset of disease. The number of high signal lesions showed by each sequence scan was recorded. Combined with the clinical signs and symptoms, The responsibility of the disease lesions. Results: Weighted diffusion-weighted imaging showed that there were 30 lesions in all the lesions, which were 100% in the responsible lesions and 100% in the lesions. T2WI showed 105 lesions, of which 28 lesions were responsible, and 93.3% The specificity was 26.7%. FLAIR scan revealed 75 lesions, of which 29 were responsible and 96.7% for responsible lesions, showing a specificity of 38.7%. CONCLUSIONS: MRI diffusion-weighted imaging is sensitive and specific in the diagnosis of acute cerebrovascular disease in patients with recurrent cerebral infarction.