ESTRO 2025 - Abstract Book

S3477

Physics - Optimisation, algorithms and applications for ion beam treatment planning

ESTRO 2025

Conclusion: Discrete proton arc therapy with 36 beams (PAT-36) was dosimetrically superior to IMPT plans with ≤8 beams. FAT 36 was dosimetrically comparable to 10-field IMPT (BAO-10), and also numbers of energy layers and MUs were similar. However, due to the much larger number of discrete beam angles, treatment times for PAT-36 will be significantly longer than for BAO-10.

Keywords: Proton Arc Therapy, automated treatment planning

References: [1] S. Mein et al., DOI: 10.1016/j.radonc.2024.110434

[2] B. A. De Jong et al., DOI: 10.1002/mp.16098 [3] E. Engwall et al., DOI:10.1002/mp.16617 [4] S. Breedveld et al., DOI: 10.1118/1.3676689 [5] W. Kong et al., DOI:10.1088/1361-6560/ad1e7a [6] M. Huiskes et al., DOI: 10.1016/j.ijrobp.2023.12.034 [7] National Association for Radiotherapy in the Netherlands [Online]. Available: 2019-08 15__Landelijk_Indicatieprotocol_Protonentherapie_Hoofdhals_v2.2.pdf