218例前交通动脉瘤三维CT血管造影临床分析

目的：对前交通动脉瘤的三维CT血管造影（three dimensional computed tomographic angiography，3D-CTA）结果进行分析。方法：总结分析了我院近6年经手术证实的218例前交通动脉瘤的影像学资料，随机选取220例非前交通动脉瘤的3D-CTA作为对照。结果：218例前交通动脉瘤中，180例为动脉瘤侧大脑前动脉灿段呈优势供血，对侧大脑前动脉A1段纤细或缺如，血管影像出现明显的A1优势征；对照组中，210例的大脑前动脉血管影像双侧对称，无以上表现，仅10例出现“A1优势征”。结论：双侧大脑前动脉发育不均衡是形成前交通动脉瘤的高危因素，出现“A1优势征”的患者应积极随访观察。

Three-dimensional computed tomographic angiography study of anterior communicating artery aneurysm in 218 cases

Objective：To study the three-dimensional computed tomographic angiography features of anterior communicating artery aneurysm （ACoAA）.Methods：Results of 3D-CTA in 218 patients with ACoAA were reviewed and compared with 220 randomly selected patients with non-ACoAA changes. Results：Anterior cerebral artery A 1 segment on the same side with ACoAA was dominant in blood supply in 180 patients, while A 1 segment on the other side was infleicted with severe stenosis or obliteration. Obvious cerebral angiogcaphic abnormity presented as＂A 1 dominant signs ＂ was also observed, which was not found in patients in the control group who had approximate symmetry in both sides of AcoAA, with exception in only 10 cases. Conclusion： The asymmetry of AcoA growth is the dangerous factor for AcoA A formation, and regular follow-up study should be performed in patients with A 1 dominant signs.