Medially based meshing with finite element analysis of prostate deformation

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Medially based meshing with finite element analysis of prostate deformation (2003)

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by Jessica R. Crouch , Stephen M. Pizer , Edward L. Chaney , Marco Zaider

Venue:	Plasmas
Citations:	8 - 2 self

BibTeX

@INPROCEEDINGS{Crouch03mediallybased,
    author = {Jessica R. Crouch and Stephen M. Pizer and Edward L. Chaney and Marco Zaider},
    title = {Medially based meshing with finite element analysis of prostate deformation},
    booktitle = {Plasmas},
    year = {2003},
    pages = {108--115},
    publisher = {Springer-Verlag}
}

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Abstract

Abstract. The finite element method (FEM) is well suited for use in the non-rigid registration of magnetic resonance spectroscopy images (MRSI) with intraoperative ultrasound images of the prostate because FEM provides a principled method for modeling the physical deformation caused when the MRSI intra-rectal imaging probe compresses the prostate. However, FEM requires significant labor and computational time to construct a finite element model and solve the resulting large system of equations. In particular, any finite element based registration method must address the questions of how to generate a mesh from an image and how to solve the system of finite element equations efficiently. This paper focuses on how m-rep image segmentations can be used to generate high quality multi-scale hexahedral meshes for use with FEM. Results from the application of this method to the registration of CT images of a prostate phantom with implanted brachytherapy seeds are presented. 1

Keyphrases

finite element analysis prostate deformation large system significant labor implanted brachytherapy seed m-rep image segmentation finite element equation finite element model ct image non-rigid registration computational time high quality multi-scale hexahedral mesh intraoperative ultrasound image finite element finite element method magnetic resonance spectroscopy image mrsi intra-rectal imaging probe principled method prostate phantom physical deformation registration method

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