关键词: 短暂性脑缺血发作; 数字减影血管造影术; 动脉粥样硬化; 狭窄

Abstract: Objective To compare the distribution of intra-and extra-cranial artery atherosclerosis stenosis indifferent age patients with transient ischemic attack(TIA).Methods We calculated the frenquency of stenosis of the intra- and extra-cranial arteries in digitalsubtraction angiography of 64 patients with transient ischemic attack. The frenquency of stenosis ofarteries in various age groups was compared.Results Among 64 patients, cerebral artery atherosclerosis stenosis or occlusion was found in54 patients, and the frenquency of stenosis of intracranial artery was higher than extracranialartery (68.5% vs 64.8%). However, in patients less than 50 years old, the frenquency of stenosisof intracranial artery was significantly higher than extracranial artery and intra- and extra-cranialarteries (54.5% vs 27.3%, 18.2%, P <0.05), while in patients more than 50 years old, intracranialartery stenosis was significantly lower than intra- and extra-cranial stenosis and extracranialstenosis (21.9% vs 43.8%, 34.4%, P <0.05).Conclusion Cerebral artery atherosclerosis stenosis distributes characteristicly with age.

Key words: Transient ischemic attack; Digital subtraction angiography; Atherosclerosis; Stenosis