[液体 - 固体合模型和对 iliac 动脉脉冲波传播特性的分析]
Xuehang Sun1, Bensen Li1, Yicheng Lu1
1Key laboratory of impact and safety engineering, Ningbo University, Ningbo, Zhejiang 315211, P. R. China.
概括
阴动脉分叉的几何形状显著影响脉冲波的传播. 曲线分叉,与直线不同,显示较低的波幅和压力下降,更好地与人类生理学保持一致,并有助于诊断动脉疾病.
科学领域:
- 生物医学工程 生物医学工程
- 心血管生理学心血管生理学
- 计算流体动力学的流体动力学.
背景情况:
- 脉冲波传播对于心血管健康至关重要.
- 阴动脉的几何形状,特别是分叉形状,可能会影响血液动力学.
- 了解这些影响可以帮助诊断动脉疾病.
研究的目的:
- 为了研究阴动脉分叉几何如何影响脉冲波传播.
- 为了比较脉冲波特征在直线与曲线阴动脉分叉模型中.
- 分析分叉角度对脉冲波传播的影响.
主要方法:
- 开发了有限元分析模型,用于直线和曲线的阴动脉分叉.
- 采用了双向的液体-固体合.
- 两个模型之间的脉冲波传播特征的比较.
主要成果:
- 分叉几何学显著影响脉冲波的传播.
- 曲线分叉模型显示较低的脉冲波幅和分叉后的压力下降,匹配生理条件.
- 在分叉处观察到压力度和短暂速度波形振幅增加,与易患疾病的部位相关联.
结论:
- 状动脉的分叉几何在脉冲波动态中起着至关重要的作用.
- 曲的分叉提供了一个更现实的代表人体下动脉.
- 这些发现为使用脉冲波形分析来诊断动脉狭窄和硬化等动脉疾病提供了基础.
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