ESTRO 2024 - Abstract Book

S3326

Physics - Detectors, dose measurement and phantoms

ESTRO 2024

Conclusion:

This work presents an experimental platform for the investigation of the FLASH effect with drosophila melanogaster over a large range of dose rates. The main advantages compared to previous studies are the usage of an electron linac commonly available within radiotherapy departments and the adoption of an animal model with limited ethical restrictions and unsophisticated handling. Dose reporting for 16 MeV electron irradiations can be performed with a 5% accuracy and 1% (2.5%) precision for CONV (UHDR) irradiations. Finally, we report for the first time that a converted clinical linac can deliver up to 40 Gy/s photon megavoltage radiation for small animal experiments.

Keywords: FLASH, drosophila, 3D print

References:

1. Böhlen TT, Germond J-F, Bourhis J, Vozenin M-C, Ozsahin EM, Bochud F, et al. Normal Tissue Sparing by FLASH as a Function of Single-Fraction Dose: A Quantitative Analysis. Int J Radiat Oncol Biol Phys [Internet]. 2022 [cited 2022 Dec 22];114:1032–44. Available from: https://www.redjournal.org/article/S0360-3016(22)00541-7/fulltext 2. Dal Bello R, von der Grün J, Fabiano S, Rudolf T, Saltybaeva N, Stark LS, et al. Enabling ultra-high dose rate electron beams at a clinical linear accelerator for isocentric treatments. Radiother Oncol J Eur Soc Ther Radiol Oncol. 2023;187:109822.

3. Su TT. What Drosophila Can Teach Us About Radiation Biology of Human Cancers. Adv Exp Med Biol. 2019;1167:225–36.

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