Polygonal surface processing and mesh generation tools for the numerical simulation of the cardiac function.
Polygonal surface processing and mesh generation tools for the numerical simulation of the cardiac function.
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DOI：
10.1002/cnm.3435
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发表时间：
2021-04
影响因子：
2.1
通讯作者：
Quarteroni A
中科院分区：
文献类型：
--
作者：
Fedele M;Quarteroni A
为了模拟患者特定几何结构的心脏功能，计算网格的生成至关重要。在实践中，输入通常是来自模板几何形状或来自医学图像的一组未处理的多边形表面。这些曲面需要进行特殊处理，才能适用于体积网格生成。在这项工作中，我们提出了一套新的算法和工具，旨在促进网格生成过程。特别是，我们专注于心脏网格生成管道的不同方面：（1）心脏几何形状的特定多边形表面处理，如不同心脏腔室或分割输出的连接;（2）准确边界标签的生成;（3）取决于相关几何量的网格大小函数的定义;（4）处理和连接多个体积网格。在开源软件vmtk中实现的新算法可以相互结合，从而创建个性化的管道，可以针对每个心脏几何形状或要建模的心脏功能的每个方面进行优化。由于这些功能，所提出的工具可以显著加快网格生成过程，适用于各种心脏应用，从单腔单物理模拟到多腔多物理模拟。我们详细介绍了所有提出的算法，激励他们在心脏的背景下，我们突出了他们的灵活性，通过显示心脏网格生成管道的不同例子。我们提出了一套算法和工具，旨在促进和加快心脏几何形状的网格生成过程。主要的创新之处在于多边形表面处理、边界标记定义、网格大小定义和体积网格处理。新的算法可以相互结合，以创建个性化的应用程序特定的管道。我们证明了所提出的工具的鲁棒性和灵活性，通过各种不同的心脏几何形状的例子。
In order to simulate the cardiac function for a patient‐specific geometry, the generation of the computational mesh is crucially important. In practice, the input is typically a set of unprocessed polygonal surfaces coming either from a template geometry or from medical images. These surfaces need ad‐hoc processing to be suitable for a volumetric mesh generation. In this work we propose a set of new algorithms and tools aiming to facilitate the mesh generation process. In particular, we focus on different aspects of a cardiac mesh generation pipeline: (1) specific polygonal surface processing for cardiac geometries, like connection of different heart chambers or segmentation outputs; (2) generation of accurate boundary tags; (3) definition of mesh‐size functions dependent on relevant geometric quantities; (4) processing and connecting together several volumetric meshes. The new algorithms—implemented in the open‐source software vmtk—can be combined with each other allowing the creation of personalized pipelines, that can be optimized for each cardiac geometry or for each aspect of the cardiac function to be modeled. Thanks to these features, the proposed tools can significantly speed‐up the mesh generation process for a large range of cardiac applications, from single‐chamber single‐physics simulations to multi‐chambers multi‐physics simulations. We detail all the proposed algorithms motivating them in the cardiac context and we highlight their flexibility by showing different examples of cardiac mesh generation pipelines. We propose a set of algorithms and tools aiming to facilitate and speed‐up the mesh generation process for cardiac geometries. The main novelties regard the polygonal surface processing, the boundary tags definition, the mesh‐size definition, and the volumetric mesh processing. The new algorithms can be combined with each other to create personalized application‐specific pipelines. We demonstrate the robustness and the flexibility of the proposed tools through various examples on different kinds of cardiac geometries.
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DOI：
10.1002/cnm.3435
发表时间：
2021-04
影响因子：
2.1
作者：
Fedele M;Quarteroni A
通讯作者：
Quarteroni A
DOI：
10.1196/annals.1380.023
发表时间：
2006-01-01
期刊：
INTERACTIVE AND INTEGRATIVE CARDIOLOGY
影响因子：
--
作者：
Burton, Rebecca A. B.;Plank, Gernot;Kohl, Peter
通讯作者：
Kohl, Peter
影响因子：
3.5
作者：
Fedele, Marco;Faggiano, Elena;Quarteroni, Alfio
通讯作者：
Quarteroni, Alfio
影响因子：
10.6
作者：
Antiga, L;Ene-Iordache, B;Remuzzi, A
通讯作者：
Remuzzi, A
影响因子：
4.3
作者：
Chan, Chiu Ling;Anitescu, Cosmin;Timon Rabczuk
通讯作者：
Timon Rabczuk