Reconstructing hierarchical tetrahedral mesh density models of bony anatomy

Jianhua Yao, Russell Taylor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We proposed an efficient and automatic method to reconstruct hierarchical tetrahedral meshes and build density models for bony anatomy from CT data sets. The mesh is reconstructed from contours extracted in CT images corresponding to the outer bone surfaces and the boundaries between compact bone, spongy bone and medullary cavity. Key problems, such as tiling problem, branching problem, correspondence problem, and constraint problem, have been solved. We then approximated bone density variations by means of continuous density functions in each tetrahedron. The density functions are written as smooth Bernstein polynomial spline expressed in terms of barycentric coordinates associated with each tetrahedron. We further performed the tetrahedral mesh simplification by edge collapsing and built hierarchical structure of multiple resolution meshes. We applied our density model to efficiently generate Digitally Reconstructed Radiographs. This research is part of our effort to build a bone density atlas.

Original languageEnglish (US)
Title of host publicationMedicine Meets Virtual Reality 2001 - Outer Space, Inner Space, Virtual Space
PublisherIOS Press
Pages587-593
Number of pages7
ISBN (Print)1586031430, 9781586031435
DOIs
StatePublished - Jan 1 2001
Event2001 Medicine Meets Virtual Reality Conference: Outer Space, Inner Space, Virtual Space, MMVR 2001 - Newport Beach, CA, United States
Duration: Jan 24 2001Jan 27 2001

Publication series

NameStudies in Health Technology and Informatics
Volume81
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365

Other

Other2001 Medicine Meets Virtual Reality Conference: Outer Space, Inner Space, Virtual Space, MMVR 2001
Country/TerritoryUnited States
CityNewport Beach, CA
Period1/24/011/27/01

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

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