Objective To evaluate the value and limit of CT plain scan, CT cerebral perfusion imaging and transcranial Doppler (TCD) in transient ischemic attacks (TIA).

• 目的评价CT平扫、CT脑灌注成像和经颅多普勒超声(TCD)检查对短暂性脑缺血发作(TIA)的诊断价值和限度。