中文摘要：

目的探讨新疆中青年缺血性脑血管病患者颅内外血管狭窄的分布特点。方法对416例中青年缺血性脑血管病患者进行数字减影脑血管造影检查（DSA），分析颅内、外动脉狭窄分布情况。结果416例中青年缺血性脑血管病患者中213例（51．20％）存在脑动脉狭窄或闭塞，其中前循环动脉狭窄或闭塞98例（46．01％），后循环动脉狭窄或闭塞61例（28．64％），前后循环均有动脉狭窄或闭塞54例（25．35％），后循环动脉狭窄率低于前循环（P〈0．05）。颅内动脉狭窄或闭塞62例（29．11％），颅外动脉狭窄或闭塞94例（44．13％），颅内、颅外均有动脉狭窄或闭塞57例（26．76％），颅外动脉狭窄率高于颅内动脉（P〈0．05）。结论新疆中青年缺血性脑血管病患者以颅外动脉狭窄为主，DSA可以准确地评价中青年缺血性脑血管病患者的脑血管狭窄分布情况。

英文摘要：

Objective To investigate the characterisitics of digital subtraction angiography （DSA） in Xinjiang young and middle-aged patients with ischemic cerebrovascular stroke. Methods Four hundred and sixtenn young and middle-aged patients with ischemic cerebrovascular stroke were detected by DSA in order to analyze the distribution of intra-extracranial vascular. Results The 416 cases of young and middleaged patients with ischemic cerebrovascular stroke, the rate of intra-extracranial vascular stenosis was 51.20%（213 cases）, 46.01%（98 cases） was in anterior circulation and 28.64%（61 cases） was in the posterior circulation and 25.35% （54 cases） was in the anterior-posterior circulation. Posterior circulation arterial stenosis rate was lower than that of anterior circulation. 29.11 % （62 cases） was of intracranial stenosis, 44.13%（94 cases） was of extracranial stenosis and 26.76%（57 cases） was both. Extracranial artery stenosis rate is higher than that of intracranial artery. Conclusion extracranial stenosis is more than in tracranial stenosis in young and middle-aged patients with ischemic cerebrovascular stroke. DSA can be an accurate evaluation for the distribution of cranial vessels stenosis.