一个新的计算管道用于肝脏 perfusion 的多部分建模
Mohamed Amine Chetoui1, Pierre Beaurepaire2, Mathilde Morvan2
1Clermont Auvergne University, Clermont Auvergne INP, CNRS, Institut Pascal, France; French Tire Manufacturer Michelin, Clermont-Ferrand, France.
Computer methods and programs in biomedicine
|March 10, 2026
概括
这项研究开发了一种针对患者的肝 perfusion 模型,整合了大血管和微血管. 先进的多尺度有限元模型准确地模拟了用于个性化医疗应用的血液动力学.
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.
- 医疗成像医学成像
背景情况:
- 在高度透的组织中,血液动力学的层次组织是复杂的.
- 多隔间多孔介质模型为理解组织 perfusion 提供了一个框架.
- 准确的肝 perfusion 建模对于诊断和治疗肝脏疾病至关重要.
研究的目的:
- 为肝脏输液开发一个针对患者的多尺度有限元素模型.
- 为了考虑大肝血管和微血管之间的相互作用.
- 将患者特定的血管几何体整合到计算模型中.
主要方法:
- 一个多尺度的框架,将大型血管的1D模型和微血管的3D多孔介质模型相结合.
- 明确包括主要肝血管的几何形状.
- 接口流量条件来表示血管和多孔区间之间的血液交换.
- 一个完全合的数字策略,以提高准确性和效率.
主要成果:
- 模拟结果显示了生理上一致的压力分布和 perfusion 模式.
- 这种结合的方法成功地捕获了肝脏血液动力学的关键特征.
- 与顺序合策略相比,观察到数值稳定性的提高.
结论:
- 开发的模型提供了肝脏 perfusion 的连贯的多尺度描述.
- 在完全合的框架内整合患者特定的血管几何是显著的进步.
- 这种方法具有针对患者的肝病管理和治疗规划的潜力.
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