ESTRO 2024 - Abstract Book

S5986

RTT - Treatment planning, OAR and target definitions

ESTRO 2024

The automated and human-selected angle plans have similar treatment plan quality. We plan to apply this in-house developed automated proton therapy planning model at our upcoming proton center in 2024. It will enhance clinical work efficiency, reduce inter-planner differences, avoid low-quality plans resulting from lack of planner experience, improve patient treatment quality, and benefit plan quality control in clinical trials.

Keywords: Automated beam angle optimization, Proton therapy

References:

[1] Mutter RW, Choi JI, Jimenez RB, et al. Proton Therapy for Breast Cancer: A Consensus Statement From the Particle Therapy Cooperative Group Breast Cancer Subcommittee. International Journal of Radiation Oncology*Biology*Physics. 2021;111(2):337-359. doi:10.1016/j.ijrobp.2021.05.110

[2] Zhou Y, Li Y, Kubota Y, Sakai M, Ohno T. Robust Angle Selection in Particle Therapy. Frontiers in Oncology. 2021;11. Accessed October 24, 2023. https://www.frontiersin.org/articles/10.3389/fonc.2021.715025

[3] Bakx N, Bluemink H, Hagelaar E, et al. Reduction of heart and lung normal tissue complication probability using automatic beam angle optimization and more generic optimization objectives for breast radiotherapy. Phys Imaging Radiat Oncol. 2021;18:48-50. doi:10.1016/j.phro.2021.04.002 [4]Van’t Riet A, Mak AC, Moerland MA, Elders LH, van der Zee W. A conformation number to quantify the degree of conformality in brachytherapy and external beam irradiation: application to the prostate. Int J Radiat Oncol Biol Phys. 1997;37(3):731-736. doi:10.1016/s0360-3016(96)00601-3

[5]Kataria T, Sharma K, Subramani V, Karrthick KP, Bisht SS. Homogeneity Index: An objective tool for assessment of conformal radiation treatments. J Med Phys. 2012;37(4):207-213. doi:10.4103/0971-6203.103606

1876

Poster Discussion

On table adaptation in MR Guided prostate cancer treatments. Can RTTs replace the physician?

Dan Epstein, Vladislav Grinberg, Yoni Birstein, Qusai Tamimi, Daphne Levin

Assuta Medical Centers, Radiotherapy, Tel Aviv, Israel

Purpose/Objective:

Use of MR guided Radiotherapy (MRgRT) for low and intermediate risk prostate cancer (PC) is becoming more widely available. A major advantage of MRgRT is the ability to adapt the plan every treatment fraction based on the patient anatomy of the day. Currently, we require physician presence at the machine to contour the CTV and possibly the organs at risk. In order to streamline the workflow and minimize disruptions to physician time, this study aims to