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Communication Dans Un Congrès Année : 2023

An alternating algorithm for Prompt Gamma Time Imaging with the TIARA project

Résumé

In hadrontherapy, the precise tracking of the hadron during treatment and the real-time determination of its different characteristics (prompt gamma positions, velocity profile and energy loss) is highly recommended to detect any change or mismatch between the treatment planning and the conditions present at the time of the treatment.To the best of our knowledge, there is currently no automatic method proposed to meet this need and promptly alert or halt the treatment if there is a risk of over-irradiating healthy tissues.In the present work, we present a mathematical measurement model and an alternating strategy that ensure a joint estimation of the different properties of the hadron (the prompt gamma positions and the velocity profile allow us to determine the energy loss) throughout the measured times of flight. Our proposition is based on convergence guarantees.
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Dates et versions

hal-04381873 , version 1 (09-01-2024)

Identifiants

Citer

A Cherni, A Garnier, M Dupont, A André, J Hérault, et al.. An alternating algorithm for Prompt Gamma Time Imaging with the TIARA project. 2023 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector (RTSD) Conference (NSS/MIC 2023), Nov 2023, Vancouver, Canada. ⟨10.1109/NSSMICRTSD49126.2023.10338274⟩. ⟨hal-04381873⟩
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