ESTRO 2022 - Abstract Book

S1373

Abstract book

ESTRO 2022

Results The simulations show an agreement within 1% of the RSPs derived from the screen and those from the water tank for all materials. The experimental results show an agreement within 1% for 6 materials (3 are human-tissue-equivalent), while the agreement is better than 5% for all materials (Table 1). The agreements are similar with the results from Monte Carlo simulations and experiments of [1]. The RSPs of 5 of the Gammex materials were also derived in [2,3]: our results agree with theirs within from 1% to 6%, except for lung (discrepancies around 10%).

Conclusion The method proposed seems to have the potential to provide RSP predictions with an accuracy better than 1%: in the simulations done, this was possible for all materials considered; in the experiments, for half of the materials.

[1] doi.org/10.1016/j.nimb.2018.09.015 [2] doi.org/10.1088/1361-6560/ab9981 [3] doi.org/10.1088/0031-9155/61/22/8085

PO-1592 A novel system and approach for proton radiography using a monolithic scintillator detector

C. Darne 1 , D. Robertson 2 , C. Collins-Fekete 3 , S. Beddar 1

1 The University of Texas MD Anderson Cancer Center, Radiation Physics, Houston, USA; 2 Mayo Clinic Arizona, Radiation Oncology, Phoenix, USA; 3 University College London, Medical Physics and Biomedical Engineering, London, United Kingdom

Purpose or Objective