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Updated: Jun 14, 2025

Novel and Innovative Hybrid Technique for Type A Aortic Dissection
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A semi-automatic method for block-structured hexahedral meshing of aortic dissections.

Domagoj Bošnjak1, Antonio Pepe2, Richard Schussnig3

  • 1Institute of Structural Analysis, Graz University of Technology, Graz, Austria.

International Journal for Numerical Methods in Biomedical Engineering
|August 29, 2024
PubMed
Summary

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This study introduces a semi-automatic method for creating hexahedral meshes of aortas with dissection. This approach aids in computational fluid dynamics simulations for this complex cardiovascular condition.

Area of Science:

  • Biomedical Engineering
  • Computational Science
  • Medical Imaging

Background:

  • Aortic dissection creates complex dual-channel blood flow, challenging traditional mesh generation for simulations.
  • Accurate computational models are crucial for understanding and treating aortic dissection.

Purpose of the Study:

  • To develop a semi-automatic method for generating high-quality, structured hexahedral meshes of patient-specific aortas with dissection.
  • To facilitate computational fluid dynamics (CFD) simulations for studying blood flow in dissected aortas.

Main Methods:

  • A semi-automatic meshing algorithm starting from surface meshes.
  • Construction of implicit surface representation and topological skeleton.
  • Generation of block-structured hexahedral meshes using transfinite maps.
Keywords:
aortic dissectioncomputational fluid dynamicscomputational medicinemesh generationskeleton‐based meshing

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Main Results:

  • Successfully generated structured, fully hexahedral meshes of patient-specific aortas with dissection.
  • Meshes exhibit good quality and accurately represent the original geometry.
  • Demonstrated mesh utility through computational fluid dynamics simulations.

Conclusions:

  • The developed semi-automatic approach effectively addresses the challenges of meshing dissected aortas.
  • The generated meshes are suitable for CFD analysis and support the use of geometric multigrid solvers.
  • This method advances the creation of patient-specific models for aortic dissection research.