颅内动脉瘤的影像学诊断(着重脑血管造影)

Imaging Diagnosis of Intracranial Aneurysm with Emphasis on Analysis of Cerebral Angiogram

目的：报道了23例颅内动脉瘤的脑血管造影表现，并对脑血管造影、CT、MRI及MRA在颅内动脉瘤诊断中的应用价值进行对比分析。材料与方法：23例均采用Seldinger技术穿刺股动脉行选择性全脑血管造影；同时行CT检查20例、MRI检查7例、MRA检查4例。结果；脑血管造影时颅内动脉瘤的敏感性和特异性分别为95．7％和100％，能准确显示动脉瘤的部位、形态、大小及与载瘤动脉的关系；CT及MRI对脑动脉瘤的特异性分别为55．0％及71．4％。结论：全脑血管造影是确诊颅内动脉瘤的最佳手段，为临床治疗提供必要的血液动力学资料，其能弥补MRA之不足；CT及MRI对颅内动脉瘤并发症的诊断优于脑血管造影。

Purpose: Cerebral angiography findings of intracranial aneurysm in 23 patients were reported and comparedwith those of CT and MRI and MRA, Materials and methods: 23 cases underwent selective cerebral angiography. At meanwhile20 cases underwent CT, 7 MRI and 4MRA Results: The sensitivity and secitivity of cerebral angiography was 95. 7 % and 100 %The site, size and morphology of aneurysms and its relation to supply artery were accurately demonstrated by cerebral angiogra-phy. Concluslon: Cerebral angiography was the best method for definitive diagnosis of cerebral angiography, providing blood circu-lation informations for clinical treatment and additional informations to MRA. CT and MRI were more sensitive and specific in thedetertion of the cotnplications of intracranial aneurySm than cetebral angiography.