对左心房流量的减少顺序模型配方:心房动病例
Caterina Balzotti1, Pierfrancesco Siena1, Michele Girfoglio1
1Scuola Internazionale Superiore di Studi Avanzati (SISSA), Mathlab, Trieste, Italy.
Biomechanics and modeling in mechanobiology
|May 16, 2024
概括
本研究引入了一种数据驱动的减少顺序模型 (ROM),用于分析心房动 (AF) 中的血流. 该模型有效地重建了血液动力学,为患者特定的分析提供了显著的计算加速.
科学领域:
- 生物医学工程 生物医学工程
- 计算流体动力学的流体动力学.
- 医学物理 医学物理
背景情况:
- 心房动 (AF) 显著改变血液流动的动态,导致潜在的并发症,如血栓形成.
- 准确的血液动力学分析对于了解AF相关风险至关重要.
- 针对患者的具体建模提供了对疾病进展的个性化见解.
研究的目的:
- 开发和验证一个数据驱动的减少订单模型 (ROM) 用于患者特定的血液流量分析在AF.
- 为了有效地重建与血液静止有关的关键血液动力学指数.
- 在准确性和计算速度方面,将ROM的性能与全订单模型 (FOM) 进行比较.
主要方法:
- 使用正确的直角分解-辐射基函数 (POD-RBF) 方法来构建ROM.
- 完全顺序模型 (FOM) 基于不可压缩的纳维埃-斯托克斯方程,使用有限体积 (FV) 方法进行分离.
- 牛顿和卡森的非牛顿构成定律都用于模拟血液粘度.
主要成果:
- POD-RBF ROM准确地重建了血液动力学指数,包括与血液静止有关的指数.
- 与FOM相比,该模型显示了显著的计算加速.
- 该框架允许进行参数研究,包括心脏输出,血粘度和血红素.
结论:
- 数据驱动的POD-RBF ROM提供了一个高效和准确的计算工具,用于在AF中针对患者的血流分析.
- 这种方法有助于在各种生理条件下研究血液动力学.
- 开发的模型在个性化医学和AF患者的风险评估方面具有潜在的应用.
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