ESTRO 2025 - Abstract Book

S2230

Interdisciplinary – Global health

ESTRO 2025

n=91) followed by head and neck cancer (18%, n=79), and cervical cancer (16%, 69). Sixty-five percent (n=288) of patients presented at late stage however a majority received curative radiotherapy (n=303, 68%). The most frequent radiotherapy regimens were 40 Gy in 15 fractions for curative breast cancer (64/270, 24%) and 30 Gy in 10 fractions for palliative cancers (n=74/126, 59%). Most patients had a wait time of 7 days or less (284/395, 72%) with nearly all patients being treated within 30 days (391/395, 99%). There was no documented grade 3-4 toxicity. Conclusion: Modern radiotherapy in Ethiopia has increased treatment capacity and reduced wait time from months to days leading to higher rates of curative intent therapy and reduced toxicity as compared to Cobalt-60 radiotherapy. References: 1. Rick TJ, Habtamu B, Abreha A, et al. Ethiopia: How the Care of 100 Million People Pivots on a Single Cobalt Teletherapy Machine. Int J Radiat Oncol Biol Phys . 2020;106(2). doi:10.1016/j.ijrobp.2019.06.015 2. Rick T, Habtamu B, Tigeneh W, et al. Patterns of Care of Cancers and Radiotherapy in Ethiopia. J Glob Oncol . 2019;5:1-8. doi:10.1200/JGO.19.00129 3. Rick TJ, Habtamu B, Tigeneh W, et al. Radiotherapy Practice for Treatment of Bone Metastasis in Ethiopia. JCO Glob Oncol . 2020;6(6):1422-1427. doi:10.1200/GO.20.00204 4. Fekadu A, Rick TJ, Tigeneh W, Kantelhardt EJ, Incrocci L, Jemal A. Clinicopathology and Treatment Patterns of Head and Neck Cancers in Ethiopia. JCO Glob Oncol . 2022;(8). doi:10.1200/go.22.00073 Keywords: Ethiopia, linear accelerator, toxicity 1 Radiotherapy Physics, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom. 2 Department of Oncology, Aarhus University Hospital, Aarhus, Denmark. 3 Department of Clinical Medicine, Aarhus University, Aarhus, Denmark. 4 Division of Medical Radiation Physics and Department of Radiation Oncology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland. 5 Cancer Division, University College London Hospitals NHS Foundation Trust, London, United Kingdom. 6 Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom. 7 Radiotherapy Physics, The Christie NHS Foundation Trust, Manchester, United Kingdom. 8 Division of Clinical Cancer Science, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom Purpose/Objective: Climate change is an escalating crisis with significant implications for public health and, by extension, healthcare services. 1 To gain an understanding of radiotherapy professionals’ perspectives on the contribution of our professional and personal choices on climate change, an ESTRO survey was undertaken and the results analysed. Material/Methods: A survey was developed, piloted and validated that asked questions about the environmental impact of radiotherapy services, respondents’ personal actions and their expectations of ESTRO’s responses to the climate crisis. The survey was widely promoted and received 706 responses. Descriptive analysis has been performed using MATLAB R2024a. Results: 90% (n=629) of respondents either strongly agreed (55%) or agreed (35%) that climate change is a concern with 94% saying that they had made a change in their personal lives to help fight the climate crisis. 1816 Digital Poster Results of an environmental sustainability survey of radiotherapy professionals Rachel Allcock 1 , Kari Tanderup 2,3 , Jenny Bertholet 4 , Amanda Webster 5,6 , Robert Chuter 7,8