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Hexahedral meshing of subject-specific anatomic structures using mapped building blocks.

Nicole A Kallemeyn¹, Amla Natarajan, Vincent A Magnotta

¹Department of Biomedical Engineering, The University of Iowa, Iowa City, IA 52242, USA.

Computer Methods in Biomechanics and Biomedical Engineering

|December 22, 2011

Summary

This study presents a new method for rapidly creating patient-specific computational models. It efficiently maps template block structures to subject surfaces, enabling faster generation of high-quality finite element analysis meshes for clinical use.

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Area of Science:

Computational modeling
Medical imaging
Finite element analysis

Background:

Clinical application of computational techniques like finite element analysis (FEA) requires efficient generation of patient-specific models.
Existing methods for mapping template meshes to subject surfaces can be time-consuming.

Purpose of the Study:

To develop and validate a method for mapping a template block structure to subject-specific surfaces.
To enable faster generation of high-quality computational meshes for clinical FEA.

Main Methods:

Extension of previously developed force and displacement controlled mapped meshing tools.
Mapping of a template block structure, common to multiblock meshing, to subject-specific surfaces.
Verification using four diverse datasets with varying bony surface characteristics.

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Main Results:

The developed method successfully mapped template block structures to subject-specific surfaces.
The approach demonstrated robustness across variations in bony surface size, spatial position, and geometry.
Generated building block structures (BBSs) produced meshes comparable to manually created BBSs.

Conclusions:

The method provides a versatile and robust approach for generating patient-specific computational models.
This technique can significantly reduce the time required for creating high-quality FEA meshes compared to manual methods.
Facilitates the broader clinical adoption of advanced computational modeling techniques.