Department of Radiology, St. Luke's International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560, Japan.
Jpn J Radiol. 2012 Oct;30(8):624-7. doi: 10.1007/s11604-012-0099-y. Epub 2012 Jul 5.
The purpose of this study is to analyze the effect of morphological features on angiography after endovascular embolization for anterior communicating artery (AcoA) aneurysms.
We conducted a retrospective case review of 32 consecutive patients (19 males and 13 females) with AcoA aneurysms treated by endovascular coil embolization between February 2003 and August 2011. Mean age was 61 years (range 36-90 years). Twenty-eight aneurysms were ruptured and 4 were unruptured. We evaluated morphological features included direction of the dome, dome size, dome to neck ratio, presence of irregularity, and angle between A1 segment of the anterior cerebral artery and C1 segment of the internal carotid artery. Immediate angiographic results (complete or incomplete occlusion) and the occurrence of procedural complications (aneurysmal rupture and thromboembolic events) were correlated with morphological features. Fisher's exact test was used for statistical analysis.
A single factor significantly associated with incomplete occlusion was superior dome direction (p = 0.037). Other morphological features did not correlate with angiographical results. There was no correlation between morphological features and procedural complications.
Incomplete occlusion after coil embolization for AcoA aneurysms is more common in cases of superior dome direction.
本研究旨在分析前交通动脉瘤（AcoA）血管内栓塞后形态学特征对血管造影的影响。
我们回顾性分析了 2003 年 2 月至 2011 年 8 月期间采用血管内线圈栓塞治疗的 32 例 AcoA 动脉瘤患者（19 例男性，13 例女性）。平均年龄为 61 岁（36-90 岁）。28 个动脉瘤破裂，4 个未破裂。我们评估了形态学特征，包括瘤顶方向、瘤顶大小、瘤顶与瘤颈比、不规则性存在情况以及大脑前动脉 A1 段与颈内动脉 C1 段之间的角度。将即刻血管造影结果（完全或不完全闭塞）和程序并发症（动脉瘤破裂和血栓栓塞事件）与形态学特征相关联。Fisher 确切检验用于统计分析。
单因素分析显示，瘤顶方向与不完全闭塞显著相关（p = 0.037）。其他形态学特征与血管造影结果无相关性。形态学特征与程序并发症之间也无相关性。
AcoA 动脉瘤血管内栓塞后不完全闭塞在瘤顶向上的情况下更为常见。
