Materials and Methods Doppler ultrasound (DUS), MR angiography (MRA) were performed for 30 carotid arteries of 15 patients, while CT and MRI scanning of the brain were done simultaneously.

• 材料与方法对15例30支颈动脉行多普勒超声(DUS)、磁共振血管造影(MRA)及头部CT、MRI检查。