64层CT对缺血性脑血管病患者脑动脉狭窄分布特征的研究

目的探讨动脉粥样硬化性缺血性脑血管病患者颅内外动脉狭窄的部位和年龄分布特征。方法选择存在脑动脉狭窄的缺血性脑血管病患者144例,按年龄分为青年组(18～44岁,12例)、中年组(45～59岁,45例)和老年组(≥60岁,87例)。通过CT血管造影检查,对脑动脉不同狭窄部位及年龄分布特征进行分析。结果 144例动脉狭窄或闭塞患者中,共检测到病变血管414支,单支性血管狭窄24例(16.7%),多发性狭窄120例(83.3%,P<0.01)。单纯颅内动脉狭窄和颅内合并颅外动脉狭窄发生率明显高于单纯颅外动脉(60.4%vs 31.3%vs8.3%,P<0.01)。颅内、外动脉病变好发部位依次为:大脑中动脉和椎动脉颅外段。单纯前循环狭窄和前后循环均狭窄发生率明显高于单纯后循环狭窄(35.4%vs 41.7%vs 22.9%,P<0.05,P<0.01)。青年组和中年组单纯颅内动脉狭窄发生率明显高于老年组(83.3%vs 75.6%vs 49.4%,P<0.05)。老年组单纯颅外动脉狭窄发生率明显高于中年组(12.6%vs 2.2%,P<0.05)。结论缺血性脑血管病患者脑动脉狭窄以多发性为主;颅内动脉狭窄的发生率高于颅外动脉;脑动脉狭窄分布有随年龄变化的特征性。

Distribution characteristics of cerebral artery stenosis in patients with ischemic cerebrovascular disease detected by 64 slices CT

Objective To explore the distribution of cerebral artery stenosis in patients with ischemic cerebrovascular disease.Methods 144 patients with ischemic cerebrovascular disease were checked by 64 slices CT.They were divided into the young-aged,middle-aged and old-aged group. The distribution characteristics of cerebral artery stenosis were analyzed.Results The incidence rates of single and multiple arteriostenosis was 16.7%and 83.3%respectively.The incidence of intracranial arteriostenosis and coexistence of intracranial and extracranial arteriostenosis were higher than that of extracranial arteriostenosis(P<0.01).The prediction sites of intracranial and extracranial arteriostenosis were middle cerebral artery and extracranial vertebral artery.The incidence of anterior circulation and the whole circulation arteriostenosis were higher than that of the posterior circulation arteriostenosis(P<0.05,P<0.01).The incidence of intracal arteriostenosis in the middle-aged group and the young-aged group were higher than that in the old-aged group (P<0.05).The incidence of extracranial arteriostenosis in the old-aged group was higher than that in the middle-aged group(P<0.05).Conclusions Multiple arteriostenosis in ischemic cerebrovascular disease patients was significant.The ratio of intracal arteriostenosis was higher than that of extracranial arteriostenosis.The distribution of cerebral artery stenosis varies with age.