Multi-physics right and left ventricle (RV/LV) fluid-structure interaction (FSI) models were introduced to perform mechanical stress analysis and evaluate the effect of patch materials on RV function. The FSI models included three different patch materials (Dacron scaffold, treated pericardium, and contracting myocardium), two-layer construction, fiber orientation, and active anisotropic material properties. The models were constructed based on cardiac magnetic resonance (CMR) images acquired from a patient with severe RV dilatation and solved by ADINA. Our results indicate that the patch model with contracting myocardium leads to decreased stress level in the patch area, improved RV function and patch area contractility.

中文翻译：

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基于多物理场 MRI 的两层流固耦合不同贴片材料的左右心室各向异性模型：心脏功能评估和机械应力分析

引入多物理场左右心室 (RV/LV) 流固耦合 (FSI) 模型来执行机械应力分析并评估补片材料对 RV 功能的影响。FSI 模型包括三种不同的补片材料（涤纶支架、处理过的心包和收缩心肌）、两层结构、纤维取向和活性各向异性材料特性。这些模型是基于从严重 RV 扩张患者获得的心脏磁共振 (CMR) 图像构建的，并由 ADINA 求解。我们的结果表明，具有收缩心肌的贴片模型导致贴片区域的应力水平降低、右心室功能和贴片区域收缩性得到改善。