前交通动脉囊性动脉瘤几何学指标与破裂风险的相关性研究

A correlation study of geometric parameters of the saccular aneurysm at the anterior communicating artery and the risk of rupture

目的通过测量分析前交通动脉瘤的几何学指标，评估其与破裂风险的相关性。方法将前交通动脉瘤分为破裂组和未破裂组，通过计算机软件测量最大瘤体长度／载瘤动脉直径（SR）、流人角（FA）、子母角（PDA）、动脉瘤体积／瘤颈面积（VOR）、A1直径／A2直径（A1／A2）、动脉瘤体积／假想最小球体积（AVSV）并应用SPSS19．0软件进行统计学分析。结果破裂组SR、VOR、A1／A2、AVSV的均值均大于未破裂组（P〈0．05），破裂组PDA小于未破裂组（P〈0．05）；多因素分析结果SR、FA、PDA、VOR、A1／A2、AVSV差异无统计学意义（P〉0．05）。结论几何学指标对于评价动脉瘤破裂风险具有客观的意义，SR、VOR、A1／A2、AVSV数值越大，动脉瘤越容易破裂；PDA数值越小，动脉瘤越容易破裂。

Objective To evaluate the correlation between the anterior communicating artery aneurysm and the risk of rupture through measuring and analyzing its geometric parameters. Methods The anterior communicating artery aneurysms were divided into either a ruptured group or an unruptured group. The maximum tumor size ratio （ SR）/diameter of parent artery, flow angle （FA）, parent-daughter angle （PDA）, volume-to-ostium ratio （VOR）, A1/A2 diameter ratio, a ratio of aneurysm volume to bounding sphere volume （AVSV） were measured by computer software, and statistical analysis was performed by using SPSS 19.0 software. Results The mean SR, VOR, A1/A2, and AVSV of the ruptured group were higher than those of the unruptured group （ P 〈 0.05 ） and PDA of the rupture group was less than that of the unruptured group （P 〈 0.05 ） ; Multivariate analysis results showed that there were no significant differences in SR, FA, PDA, VOR, A1/A2, and AVSV between the 2 groups （P 〉 0.05 ）. Conclusions The geometry parameters have the objective significance for the evaluation of the risk of aneurysm rupture, and the bigger the values of SR, VOR, A1/A2, AVSV, the more easily ruptured aneurysm, and the smaller the value of PDA, the more easily ruptured aneurysm.