目的研究短暂性脑缺血发作采 用磁共振弥散成像诊断的临床价值。方法 选取40例短暂性脑缺血患者按照随机对照 原则分成两组，每组20例，行磁共振弥散 成像检查作为研究组，行常规磁共振成像 检查作为对照组，观察比较两组的诊断结 果。结果 研究组患者缓解期检出阳性率 (90.00%)、发作期检出阳性率(95.00%) 均高于对照组(70.00%、80.00%)，P ＜0.05，组间差异显著。研究组检出病灶 数目较对照组多，病灶直径较对照组长， 组间比较P＜0.05，差异显著。结论 磁共 振弥散成像对短暂性脑缺血发作的确诊率 明显高于常规磁共振，对患者颅内受损部 位的具体情况反馈准确性高，临床应用前 景广阔。

Objective This Paper is to study clinical value of magnetic resonance imaging diagnosis applied in transient ischemic attack. Methods Forty patients with transient ischemic attack were divided into two groups with 20 cases in each group according to the principle of randomized control, patients in the research group were subject to magnetic resonance diffusion imaging, patients in the control group were subject to conventional magnetic resonance imaging, and diagnosis results of patients in two groups were compared. Results The positive detection rate (90.00%) of patients in the research group during catabasis period (95.00%) were higher than those of patients in the control group (70.00%, 80.00%) (P<0.05), and the inter-group difference was significant. The detected lesions of patients in the research group were more than those of patients in the control group, the diameter of lesion in the research group were longer than that of patients in the control group, the inter-group comparison satisfied P<0.05, and the differences were significant. Conclusion Accurate diagnosis rate of magnetic resonance imaging is significantly higher than conventional magnetic resonance in diagnosis of transient ischemic attack, the accuracy of specifically damaged intracranial part is high, and the prospect of clinical application is wide.