Diffusion model-based single-scan dual-energy cone-beam CT using primary beam splitting Conference Paper
| Authors: | Peng, J.; Chang, C. W.; Qiu, R. L. J.; Roper, J.; Wang, T.; Patel, P. R.; Yu, D. S.; Tang, X.; Yang, X. |
| Title: | Diffusion model-based single-scan dual-energy cone-beam CT using primary beam splitting |
| Conference Title: | SPIE Medical Imaging 2024: Physics of Medical Imaging |
| Abstract: | Dual-energy cone-beam CT (DECBCT) has great potential for quantitative imaging tasks in CBCT-guided radiation therapy. However, the lack of a practical single-scan solution in data acquisition impedes the practice of CBCT-based adaptive radiotherapy (ART). In this work, we propose an efficient way to achieve DECBCT using the primary beam splitting in a single short scan or half-fan scan. To restore complete dual-energy sinograms sufficient for analytical image reconstruction, the conditional diffusion model is introduced to convert the acquired spectral-mixed sinogram to the complete dual-energy sinograms via a data refinement strategy. The proposed method is compared with the other two diffusion model-based methods and the preliminary results demonstrate the feasibility of the proposed method in quantitative imaging tasks, making it a promising solution to CBCT-based dose calculation and replanning. © 2024 SPIE. |
| Keywords: | radiotherapy; diffusion; computerized tomography; medical imaging; quantitative imaging; image reconstruction; cone-beam ct; data acquisition; dual-energy; model-based opc; sinograms; diffusion model; beam splitting; imaging task; primary beams; single scan |
| Journal Title | Progress in Biomedical Optics and Imaging - Proceedings of SPIE |
| Volume: | 12925 |
| Conference Dates: | 2024 Feb 19-22 |
| Conference Location: | San Deigo, CA |
| ISBN: | 1605-7422 |
| Publisher: | SPIE |
| Date Published: | 2024-01-01 |
| Start Page: | 129253A |
| Language: | English |
| DOI: | 10.1117/12.3005046 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | Conference paper -- Source: Scopus |
