S1444
Interdisciplinary - Other
ESTRO 2026
treatment course, followed by energy building consumption (7%). The carbon footprint of extreme hypofractionated treatments was statistically lower compared to moderate hypofractionated treatments (p =.00014). For moderate and extreme hypofractionated treatments, the median carbon footprint was 847 kgCO2e and 379 kgCO2e, respectively, corresponding to a round trip of approximately 5,500 km (e.g. Paris-Dubai) and 2,500 km (e.g. Rome-Berlin), respectively. Patient travel was the major contributor in both cases (655.85 kgCO2e and 335.09 kgCO2e, respectively), accounting for 90% and 94% of the total carbon footprint.
Institute for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, Netherlands. 4 ESTRO Office, ESTRO, Brussels, Belgium. 5 Department of Radiation Oncology, Oncology Institute of Southern Switzerland, EOC, Bellinzona, Switzerland. 6 Radiotherapy and Proton Beam Therapy, University College Hospitals NHS Foundation Trust, London, United Kingdom. 7 Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy. 8 Department of Radiation Oncology, Maggiore Della Carità’ University Hospital, Novara, Italy. 9 Department of Oncology, Aarhus University Hospital, Aarhus, Denmark. 10 Department of Radiation Oncology, University Hospital Zürich, University of Zürich, Zürich, Switzerland. 11 Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA. 12 Division of Radiation Oncology and Department of Oncology and Hemato-Oncology, European Institute of Oncology IRCCS and University of Milan, Milan, Italy. 13 Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, Netherlands. 14 European Organisation for Research and Treatment of Cancer (EORTC), EORTC, Brussels, Belgium. 15 Department of Oncology and Radiotherapy, Medical University of Gdańsk, Gdańsk, Poland. 16 Centre for Experimental Cardiooncology, Medical University of Gdańsk, Gdańsk, Poland. 17 Medical Physics and Biomedical Engineering, University College London (UCL), London, United Kingdom. 18 Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom. 19 Division of Cancer Sciences, University of Manchester, Manchester, United Kingdom Purpose/Objective: The incidence and prevalence of cancer continue to rise, and the working population declines. Therefore, strengthening and stabilising the radiotherapy workforce is essential for continuous service delivery. Understanding factors influencing retention is a first step toward achieving this. This study presents the first results of the ESTRO Early Career Committee Retention Survey. Material/Methods: A cross-sectional, anonymous online survey was developed by a diverse early-career expert panel, in collaboration with a human resources specialist. Items were derived from literature[1,2], scored for relevance, and reviewed for content validity (CVI≥0.80). The survey comprised six sections: demographics, workplace satisfaction, leadership, collaboration, personal development and career decisions. Most items used 5-point Likert scales, complemented by ranking and open-ended questions. The survey was promoted from May-August 2025 through ESTRO communication channels and at ESTRO2025. Associations between individual items and intention to
Conclusion: These initial findings highlight that the biggest contributor to RT carbon footprint was patient travel. This result suggests how the adoption of extreme hypofractionated treatments may represent a possible way to reduce RT carbon footprint. ACKNOWLEDGMENTS - The project has been conducted within the MUSA – Multilayered Urban Sustainability Action – project, funded by the European Union – NextGenerationEU, under the National Recovery and Resilience Plan (NRRP) Mission 4 Component 2 Investment Line 1.5: Strengthening of research structures and creation of R&D “innovation ecosystems”, set up of “territorial leaders in R&D”. Keywords: carbon footprint, sustainability, hypofractionatio Proffered Paper 2295 More than half of Radiation Oncology professionals consider leaving their department, but what keeps them from walking away? Dylan Callens 1,2 , Jolien Heukelom 3 , Hanna Alajõe 4 , Antonio Angrisani 5 , Nathalie Cnops 4 , Danielle Fairweather 6 , Pierfrancesco Franco 7,8 , Morten Horsholt Kristensen 9 , Tiuri Kroese 10 , Federico Mastroleo 11,12 , Steven Petit 13 , Daniel Portik 14,3 , Bartłomiej Tomasik 15,16 , Amanda Webster 6,17 , Azadeh Abravan 18,19 1 Laboratory of Experimental Radiotherapy, KU Leuven, Leuven, Belgium. 2 Department of Radiation Oncology, UZ Leuven, Leuven, Belgium. 3 Department of Radiation Oncology (Maastro), GROW Research
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