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(-)颅内动脉较身体其他部位易发生动脉瘤,绝大多数为先天性,好发于Willis环,特别是前、后交通动脉、颈内动脉的床突上段及其周围血管分支部或分支起始部位,其他部位较少见,它是自发性蛛网膜下腔出血最常见原因。本组统计262例颅内动脉瘤中,单发258例占98.5％。男女之比为1:1.2,女性稍多。左右两则发生率相比亦为1.2:1,左侧发生率略高。在年龄方面,青少年与老年人较少,中壮年多见,从11～60岁基本上随年龄增长而增加,发病年龄最高为30～60岁占80％。 (二)颅内动脉瘤检查方法:目前主要依靠脑血管造影检查,它不但可以确定动脉瘤的位置、数目、大小和形态等,而且对颅内其他伴发的病变也可发现,因此,造影检查对动脉瘤的确诊以及决定治疗方针,估计预后等均属必要。 (三)对造影时机的选择、投照方法:关于动脉瘤好发年龄、好发部位、动脉瘤形成的原因与类型区分、动脉瘤破裂后引起脑血管痉挛的机理等问题都参考有关文献,作扼要地分析讨论。
(-) intracranial artery aneurysm prone to other parts of the body, the vast majority of congenital, occur in the Willis ring, especially in the anterior communicating artery, internal carotid artery bed and the surrounding vascular branch or The initial part of the branch, the other parts of the less common, it is the most common cause of spontaneous subarachnoid hemorrhage. The group of 262 cases of intracranial aneurysms, 258 cases accounted for 98.5% single. The ratio of men and women is 1: 1.2, slightly more women. The incidence of left and right is also compared to 1.2: 1, the left slightly higher incidence. In terms of age, adolescents and the elderly are fewer, more common in middle-aged and adolescent, from 11 to 60 years of age basically increases with age, the highest age of onset of 30 to 60 years accounted for 80%. (B) of the intracranial aneurysm examination: At present mainly rely on cerebral angiography, it can not only determine the location of the aneurysm, the number, size and morphology, but also for other associated intracranial lesions can be found, therefore, angiography Check the diagnosis of aneurysms and determine the treatment guidelines, prognosis are necessary. (C) of the timing of angiography, projection method: on the age of the aneurysm, a good site, the formation of aneurysms causes and types of distinction, aneurysm rupture caused by cerebral vasospasm and other issues refer to the relevant literature, Briefly analyze the discussion.