ESTRO 2025 - Abstract Book

S2999

Physics - Image acquisition and processing

ESTRO 2025

Conclusion: The global-local feature fusion denoising diffusion model proposed in this paper shows superior performance in LDCT image denoising, provides a new alternative for low-dose CT denoising and reconstruction, and contributes to the precise implementation of adaptive radiotherapy.

Keywords: Adaptive radiotherapy, CT reconstruction,

References: [1] R. Smith-Bindman et al., “Radiation dose associated with common com puted tomography examinations and the associated lifetime attributable risk of cancer,” Arch. Intern. Med., vol. 169, pp. 2078–2086, 2009. [2] A. Sodickson et al., “Recurrent CT, cumulative radiation exposure, and associated radiation-induced cancer risks from CT of adults,” Radiology, vol. 251, pp. 175–184, 2009. [3] Q. Xie et al., “Robust low-dose CT sinogram preprocessing via ex ploiting noise-generating mechanism,” IEEE Trans. Med. Imag., vol. 36, no. 12, pp. 2487–2498, 2017.