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Reconstruction of 3-Dimensional Histology Volume and its Application to Study Mouse Mammary Glands

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Automated hexahedral meshing of anatomic structures using deformable registration.

Nicole M Grosland¹, Ritesh Bafna, Vincent A Magnotta

¹Department of Biomedical Engineering, The University of Iowa, Iowa City, IA, USA. nicole-grosland@uiowa.edu

Computer Methods in Biomechanics and Biomedical Engineering

|August 9, 2008

Summary

This study presents an automated method for creating patient-specific finite element (FE) models of bone. The technique efficiently maps a template mesh to a target bony surface, reducing manual effort for biomechanical analysis.

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Area of Science:

Biomedical Engineering
Computational Mechanics
Medical Imaging

Background:

Developing patient-specific finite element (FE) models is crucial for accurate biomechanical analysis.
Manual mesh generation for FE models is time-consuming and requires significant user expertise.
Automating this process can accelerate research and clinical applications in orthopedics and biomechanics.

Purpose of the Study:

To introduce a novel, automated method for generating patient-specific FE models.
To utilize a mapped mesh technique for efficient transfer of a high-quality template mesh to a target bony surface.
To reduce user interaction and computational time in FE model development.

Main Methods:

A mapped mesh technique was employed, transferring a predefined template mesh to a new bony surface.
Deformable registration based on the finite element method was used to align the template with the target surface.
A hierarchical procedure with multiple mesh refinement levels was implemented to optimize solution time.

Main Results:

The method was successfully applied to the phalanx bones of the human hand.
Evaluated mesh quality metrics (element volume, distortion) demonstrated the effectiveness of the mapping.
Measurements of the distance between the target surface and the mapped mesh confirmed the accuracy of the technique.

Conclusions:

The proposed automated mapped mesh technique provides a viable solution for patient-specific FE model development.
The hierarchical approach and FE-based registration significantly reduce development time and user intervention.
This method shows strong applicability for generating accurate FE models of bony structures for biomechanical studies.