Methods The extracranial carotid arteries (ECA) and middle cerebral artery (MCA) of 54 patients with transient ischemic attack (TIA) or cerebral infarction (CI) were examined with doppler ultrasound.

• 方法应用多普勒超声技术检测了54例短暂性脑缺血发作患者和45例脑梗塞患者的颅外段颈动脉和颅内大脑中动脉。