使用有限元法对腹腔大动脉动脉瘤的数值评估
Konstantinos Kyparissis1, Nikolaos Kladovasilakis1, Maria-Styliani Daraki1
1School of Production Engineering and Management, Technical University of Crete, 731 00 Chania, Greece.
Diagnostics (Basel, Switzerland)
|March 28, 2025
概括
有限元模型 (FEM) 通过模拟循环系统机制来帮助医疗决策. 这项研究使用FEM来评估腹腔大动脉动脉瘤破裂风险,发现较大的动脉瘤显著增加了这种危险.
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:
- 数字工具越来越多地支持复杂病例的医疗评估和决策.
- 有限元模型 (FEM) 对于模拟循环系统流体和结构动态至关重要.
- FEM可以计算与血管功能相关的风险.
研究的目的:
- 开发一种使用有限元方法的计算工具,用于评估腹腔大动脉动脉瘤中的压力.
- 提供数据来创建特定患者的大动脉数字双胞胎.
- 在腹腔大动脉动脉瘤中数值评估破裂风险.
主要方法:
- 开发了一种基于有限元素方法的计算工具.
- 检查了12个有着腹腔动脉瘤的大动脉的不同病例.
- 从DICOM文件进行了3D重建,将其转化为表面模型.
- 创建了一个有限元材料模型来模拟大动脉壁的机械行为.
主要成果:
- 通过有限元分析量化了张力,应变和位移值.
- 产生了对大动脉破裂的快速风险评估.
- 确定较大的动脉瘤区域是增加破裂风险的关键因素.
结论:
- 开发的FEM工具准确地模拟了大动脉机械行为,并量化了生物机械参数.
- 使用这种方法可以创建特定患者的数字双胞胎.
- 风险评估显示,一些患有较大的动脉瘤的病例有超过90%的大动脉破裂风险.
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