脑内动脉瘤血液动力学因墙壁运动而改变的分析
Aurèle Goetz1, Pablo Jeken-Rico1, Yves Chau2
1Computing and Fluids Research Group, CEMEF, Mines Paris PSL, 06904 Sophia Antipolis, France.
Bioengineering (Basel, Switzerland)
|March 27, 2024
概括
流体结构相互作用 (FSI) 建模通过考虑灵活的血管壁来提高动脉瘤破裂风险评估. 这种方法揭示了与硬墙模拟相比,血液流动模式的显著差异.
科学领域:
- 生物医学工程 生物医学工程
- 计算力学 计算力学 计算力学
- 医疗成像医学成像
背景情况:
- 计算流体动力学 (CFD) 对于理解动脉瘤生长和破裂至关重要.
- 之前的CFD研究经常使用刚性血管壁假设,限制破裂风险评估.
- 最近对内动脉瘤脉动的体内观察需要先进的建模技术.
研究的目的:
- 引入一种新的流体结构相互作用 (FSI) 框架,用于评估各种动脉瘤几何形状.
- 为了对动脉瘤评估的柔性和刚性壁模型之间的血液动力学参数进行比较.
主要方法:
- 开发了一个新的FSI功能设置用于动脉瘤模拟.
- 在状通道上利用了三个真正的动脉瘤圆顶.
- 为可复制性提供了详细的几何特征,网格和流量量.
主要成果:
- 墙壁变形显著改变血液流动模式和血液动力学描述.
- 结果突出了与标准硬壁模拟方法相比的差异.
- 证明了FSI建模在动脉瘤分析中的关键影响.
结论:
- 流体结构相互作用建模可以更准确地评估动脉瘤血液动力学.
- 考虑墙壁弹性对于可靠的破裂风险评估至关重要.
- 这种FSI方法支持改善动脉瘤治疗规划.
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