文章基本信息

标题：Influence of geometrical characteristics of sidewall-type multiple aneurysms on hemodynamic factors
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作者：Yufeng Hua ; Yong Bae Kim ; Je Hoon Oh 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2015
卷号：7
期号：6
DOI：10.1177/1687814015591319
语种：English
出版社：Sage Publications Ltd.
摘要：Multiple aneurysms occur rarely and have not been well investigated. The purpose of this study is to verify whether high rupture risk of multiple aneurysms is due to the interaction between multiple aneurysms’ geometrical characteristics. The following geometrical characteristics were varied in an idealized sidewall-type model: aneurysm a₁’s dome-neck length (S), size ratio, inflow angle (α), distance between two aneurysms (D), and the parent vessel’s angle (θ). We varied the parent blood vessel and aneurysm sac a₁’s geometrical characteristics to analyze their hemodynamic influence on aneurysm a₂. By comparing the influence on aneurysm a₂, we found that parent blood vessel geometrical characteristics such as the distance between aneurysms (D) and the parent vessel’s angle (θ) were the most hemodynamically influential characteristics examined. The impact of varying the aneurysm’s geometrical characteristics such as dome-neck length (S), size ratio, and inflow angle (α) was not obvious. The reason for the higher rupture rate of multiple aneurysms is not due to interactions between the aneurysm sacs but due to factors of each individual aneurysm.
关键词：Computational fluid dynamics; multiple aneurysms; geometrical characteristics; hemodynamic factors