CT血管造影在急性蛛网膜下腔出血病因诊断中的作用

目的探讨ＣＴＡ成像诊断颅内动脉瘤引起急性蛛网膜下腔出血的作用。方法应用螺旋ＣＴ平扫诊断急性蛛网膜下腔出血３０例，应用计算机ＳＳＤ和ＭＩＰ软件进行脑血管三维成像（３ＤＣＴＡ）。结果ＣＴＡ诊断颅内动脉瘤１４例，其中前交通动脉瘤３例，右大脑中动脉（Ｍ１段）动脉瘤２例，右后交通动脉瘤２例，左后交通动脉瘤４例，基底动脉瘤２例，左侧椎动脉瘤颅内段动脉瘤１例。ＣＴＡ清楚显示颅内脑基底动脉瘤的部位、形态、大小、起源以及与周围脑血管和颅骨的解剖关系。结论ＣＴＡ对颅内动脉瘤引起的蛛网膜下腔出血病因诊断是一种快捷、安全、简单的检查方法，对外科手术方案的设计有指导作用

The Role of CTA in the Diagnosis of Acute Subarechniod Hemorrage

Purpose To determine the value of computer tomographic angiography (CTA) for the detection of intrcranial aneurysms in acute subarachnoid hemorrhage (SAH).Methods Therty cases of acute subarachnoid hemorrhage were identified by clinical and CT scan,CTA were performed using Helical CT with the technical of Shaded Surface Display (SSD),and Maxinum Intensity Projection (MIP).Results The aneurysms were find in the forteen patiens, These were three aneurysms of the anterior communicating artery,two of the right middle cerebral artery, two of the right posterior communicating artery,four of the left communicating artery,two of the basilar artery,and one of the left vertebral artery of cranial segment.CTA showed clarely the site,shape,size and orientation of intracraniol aneurysms,and regarding the relations of the aneurysm to other cerebrovascular or skeletal structres.Conclusion CTA was a quick,relable and relatively simple and useful method to determene aneurysms of the cranial in the acute subarachniod hemorrhage.CTA may also be useful for surgical planing.