Share Email Print
cover

Proceedings Paper • new

A biomechanical modeling guided simultaneous motion estimation and image reconstruction technique (SMEIR-Bio) for 4D-CBCT reconstruction
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Four-dimensional (4D) cone-beam computed tomography (CBCT) enables motion tracking of anatomical structures and removes artifacts introduced by motion. However, the imaging time/dose of 4D-CBCT is substantially longer/higher than traditional 3D-CBCT. We previously developed a simultaneous motion estimation and image reconstruction (SMEIR) algorithm, to reconstruct high-quality 4D-CBCT from limited number of projections to reduce the imaging time/dose. However, the accuracy of SMEIR is limited in reconstructing low-contrast regions with fine structure details. In this study, we incorporate biomechanical modeling into the SMEIR algorithm (SMEIR-Bio), to improve the reconstruction accuracy at low-contrast regions with fine details. The efficacy of SMEIR-Bio is evaluated using 11 lung patient cases and compared to that of the original SMEIR algorithm. Qualitative and quantitative comparisons showed that SMEIR-Bio greatly enhances the accuracy of reconstructed 4D-CBCT volume in low-contrast regions, which can potentially benefit multiple clinical applications including the treatment outcome analysis.

Paper Details

Date Published: 9 March 2017
PDF: 9 pages
Proc. SPIE 10132, Medical Imaging 2017: Physics of Medical Imaging, 101322B (9 March 2017); doi: 10.1117/12.2254524
Show Author Affiliations
Xiaokun Huang, Univ. of Texas Southwestern Medical Ctr. (United States)
You Zhang, Univ. of Texas Southwestern Medical Ctr. (United States)
Jing Wang, Univ. of Texas Southwestern Medical Ctr. (United States)


Published in SPIE Proceedings Vol. 10132:
Medical Imaging 2017: Physics of Medical Imaging
Thomas G. Flohr; Joseph Y. Lo; Taly Gilat Schmidt, Editor(s)

© SPIE. Terms of Use
Back to Top