Objective To study the clinical characteristics associated with diffusion weighted imaging abnormalities in patients with transient ischemic attack. Methods The data of DWI were collected on 124 consecutive patients with TIA within 3 days of onset, according to DWI , the patient were divided into normal DWI groups and abnormal DWI groups and clinical characteristics of two groups have been compared . Results DWI-detected abnormalities were present in 48 cases( 38.7％ ), 76 patients without abnormalities ( 61. 3％ ). Prolonged TIA duration (TIA duration≥60 minutes ), multiple episodes, motor deficits, aphasia, history of either stroke or TIA,diabetes mellitus were observed more frequently in the abnormal group than in the normal group. Conclusions In TIA patiendts , prolonged TIA duration( TIA duration ≥ 60 minutes ), multiple episodes, motor deficits, aphasia,history of either stroke or TIA, diabetes mellitus are correlated with detecting an abnormality with DWI.%目的 探讨磁共振弥散成像(DWI)责任病灶在短暂性脑缺血发作(TIA)诊断与治疗中的价值及相关因素分析.方法 124例TIA患者在发病3天内行头颅MRI及DWI检查,根据DWI有无异常,分为两组(DWI正常组及DWI异常组),并比较这两组的临床资料情况.结果 48例患者有DWI异常(38.7%),76例无异常 (61.3%),发作持续时间较长(≥60min)、发作频繁、有运动障碍、失语、脑卒中或TIA史及糖尿病的TIA患者更易于出现DWI异常.结论 在临床诊断的TIA患者中,症状持续时间较长、发作频繁、运动障碍、失语、脑卒中或TIA史及糖尿病是与DWI异常显著相关的因素.
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