A decision support scheme for vertebral geometry on body CT scans

Tatsuro Hayashi; Huayue Chen; Kei Miyamoto; Xiangrong Zhou; Takeshi Hara; Ryujiro Yokoyama; Masayuki Kanematsu; Hiroaki Hoshi; Hiroshi Fujita

doi:10.1117/12.877516

15 March 2011 A decision support scheme for vertebral geometry on body CT scans

Tatsuro Hayashi, Huayue Chen, Kei Miyamoto, Xiangrong Zhou, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Author Affiliations +

Proceedings Volume 7962, Medical Imaging 2011: Image Processing; 796245 (2011) https://doi.org/10.1117/12.877516
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

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.

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Tatsuro Hayashi, Huayue Chen, Kei Miyamoto, Xiangrong Zhou, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, and Hiroshi Fujita "A decision support scheme for vertebral geometry on body CT scans", Proc. SPIE 7962, Medical Imaging 2011: Image Processing, 796245 (15 March 2011); https://doi.org/10.1117/12.877516

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