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Geometric Bone Modeling: From Macro to Micro Structures

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Abstract

There is major interest within the bio-engineering community in developing accurate and non-invasive means for visualizing, modeling and analyzing bone micro-structures. Bones are composed of hierarchical bio-composite materials characterized by complex multi-scale structural geometry. The process of reconstructing a volumetric bone model is usually based upon CT/MRI scanned images. Meshes generated by current commercial CAD systems cannot be used for further modeling or analysis. Moreover, recently developed methods are only capable of capturing the micro-structure for small volumes (biopsy samples). This paper examines the problem of re-meshing a 3D computerized model of bone micro-structure. The proposed method is based on the following phases: defining sub-meshes of the original model in a grid-based structure, remeshing each sub-mesh using the neural network (NN) method, and merging the sub-meshes into a global mesh. Applying the NN method to micro-structures proved to be quite time consuming. Therefore, a parallel, grid-based approach was applied, yielding a simpler structure in each grid cell. The performance of this method is analyzed, and the method is demonstrated on real bone micro-structures. Furthermore, the method may be used as the basis for generating a multi-resolution bone geometric model.

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Authors and Affiliations

  1. Laboratory for Computer Aided Design & Life Cycle Engineering, Faculty of Mechanical Engineering Technion Israel Institute of Technology, Haifa, Israel, 32000

    Oded Zaideman & Anath Fischer

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  1. Oded Zaideman
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  2. Anath Fischer
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Correspondence to Oded Zaideman.

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Zaideman, O., Fischer, A. Geometric Bone Modeling: From Macro to Micro Structures. J. Comput. Sci. Technol. 25, 614–622 (2010). https://doi.org/10.1007/s11390-010-9350-0

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  • DOI: https://doi.org/10.1007/s11390-010-9350-0

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