64层CTA-MIP、CTA-VR与3D-DSA对颅内动脉瘤诊断价值的对比研究

目的对比评价64层螺旋CT最大密度投影(CTA-MIP),CTA容积再现(CTA-VR)与三维数字血管造影(3D-DSA)对颅内动脉瘤(CA)的诊断价值。资料与方法回顾性分析32例经手术及DSA确诊的CA 64层CT血管成像资料,并与DSA进行对照。结果 32例共40个动脉瘤,CTA-MIP发现35个动脉瘤,CTA-VR发现37个动脉瘤,3D-DSA发现39个动脉瘤。40个动脉瘤中11个位于后交通动脉,16个位于大脑中动脉,4个位于基底动脉,1个位于椎动脉,2个位于大脑前动脉,3个位于大脑后动脉,3个位于颈内动脉。3D-DSA与CTA比较,差异无统计学意义。结论在CA影像学诊断上,CTA-MIP、CTA-VR和3D-DSA各有优势,CTA可作为外科治疗或介入治疗的筛选方法。

Comparative Study in the Diagnosis of Intracranial Aneurysms with 64 Slice CTA-and 3D DSA

Objective To evaluate the role of 64 slice computed tomography angiography maximum intensity projection(CTA,MIP),computed tomography angiography volume rendering(CTA,VR) and 3 dimensional digital subtraction angiogtaphy(3D-DSA))in the diagnosis of intracranial aneurysms.Materials and Methods The CT and DSA imaging findings of 32 patients with aneurysms were retrospectively analyzed and compared.Results 40 aneurysms in 32 patients were found by DSA and/or operation.35 aneurysms were found by CTA MIP.37 aneurysms were found by CTA VR.39 aneurysms were found by DSA.11 aneurysms were at posterior communicating artery,16 aneurysms at middle cerebral artery,4 aneurysms at basilar artery,1 aneurysms at vertebary artery,2 aneurysms at anterior cerebral artery,3 aneurysms at posterior cerebral artery,3 aneurysms at internal carotid artery.There was no significant difference in detecting aneurysms between CTA and 3D DSA.Conclusion CTA MIP,CTA VR and 3D-DSA examination have their own advantage in diagnosis of intracranial aneurysms.CTA can be used as the method in screening intracranial aneurysms for surgery and interventional therapy.