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Tool-assisted mesh generation based on a tissue-growth model.

A V Smirnov1

  • 1Mechanical & Aerospace Engineering Department, West Virginia University, Morgantown, USA. andrei@smirnov.mae.wvu.edu

Medical & Biological Engineering & Computing
|August 2, 2003
PubMed
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This study introduces a novel 3D mesh generation method inspired by tissue growth, using outward mesh expansion for complex biological structures like blood vessels and lungs.

Area of Science:

  • Computational geometry
  • Biomedical engineering
  • Scientific visualization

Background:

  • Traditional mesh generation methods often struggle with complex, branching biological structures.
  • Existing techniques typically involve inward mesh growth and require pre-defined boundary surfaces.

Purpose of the Study:

  • To develop a novel heuristic mesh generation technique for complex 3D biological networks.
  • To overcome limitations of conventional meshing methods in handling intricate geometries.

Main Methods:

  • The proposed method utilizes forced particle motion, an edgewise cell-splitting algorithm, and a moving tool concept.
  • It employs an outward mesh growth strategy, differing from traditional inward-growing techniques.
  • The approach uses a 1D skeleton or arbitrary tool motion, avoiding the need for 2D surface patching.

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Main Results:

  • The technique successfully generates smooth outer mesh boundaries at each step.
  • It is suitable for meshing complex bifurcating networks found in biological systems (e.g., blood vessels, lungs).
  • Generated meshes were applied to solve unsteady flow and particle transport problems in lungs.

Conclusions:

  • This outward-growing mesh generation method offers a robust alternative for complex biological structures.
  • The technique's adaptability makes it suitable for applications in virtual reality and biological modeling.
  • It provides a promising approach for simulating phenomena in intricate biological networks.