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Proceedings Paper

A decision support scheme for vertebral geometry on body CT scans
Author(s): Tatsuro Hayashi; Huayue Chen; Kei Miyamoto; Xiangrong Zhou; Takeshi Hara; Ryujiro Yokoyama; Masayuki Kanematsu; Hiroaki Hoshi; Hiroshi Fujita
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Paper Abstract

For gaining a better understanding of bone quality, a great deal of attention has been paid to vertebral geometry in anatomy. The aim of this study was to design a decision support scheme for vertebral geometries. The proposed scheme consists of four parts: (1) automated extraction of bone, (2) generation of median plane image of spine, (3) detection of vertebrae, (4) quantification of vertebral body width, depth, cross-sectional area (CSA), and trabecular bone mineral density (BMD). The proposed scheme was applied to 10 CT cases and compared with manual tracking performed by an anatomy expert. Mean differences in the width, depth, CSA, and trabecular BMD were 3.1 mm, 1.4 mm, 88.7 mm2, and 7.3 mg/cm3, respectively. We found moderate or high correlations in vertebral geometry between our scheme and manual tracking (r > 0.72). In contrast, measurements obtained by using our scheme were slightly smaller than those acquired from manual tracking. However, the outputs of the proposed scheme in most CT cases were regarded to be appropriate on the basis of the subjective assessment of an anatomy expert. Therefore, if the appropriate outputs from the proposed scheme are selected in advance by an anatomy expert, the results can potentially be used for an analysis of vertebral body geometries.

Paper Details

Date Published: 15 March 2011
PDF: 9 pages
Proc. SPIE 7962, Medical Imaging 2011: Image Processing, 796245 (15 March 2011); doi: 10.1117/12.877516
Show Author Affiliations
Tatsuro Hayashi, Gifu Univ. (Japan)
Huayue Chen, Gifu Univ. (Japan)
Kei Miyamoto, Gifu Univ. Graduate School of Medicine (Japan)
Xiangrong Zhou, Gifu Univ. (Japan)
Takeshi Hara, Gifu Univ. (Japan)
Ryujiro Yokoyama, Graduate School of Medicine and Univ. Hospital (Japan)
Masayuki Kanematsu, Graduate School of Medicine and Univ. Hospital (Japan)
Hiroaki Hoshi, Gifu Univ. (Japan)
Hiroshi Fujita, Gifu Univ. (Japan)

Published in SPIE Proceedings Vol. 7962:
Medical Imaging 2011: Image Processing
Benoit M. Dawant; David R. Haynor, Editor(s)

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