ESTRO 2025 - Abstract Book

S2241

Interdisciplinary – Global health

ESTRO 2025

carbon footprint of the trial itself. It would take 1868 tree seedlings grown for 10 years to sequester this quantity of carbon. These trial-specific carbon savings are significant when considering all subsequent patients receiving these regimens as part of routine care. Emissions were calculated based only on the type of radiotherapy and number of fractions delivered, and therefore should be considered an estimate rather than absolute value. More data are needed on differences in energy consumption of equipment delivering different dosages and types of radiotherapy, for example IMRT radiotherapy.

Keywords: clinical trials, sustainability, carbon footprint

References: [1] Bhatia R K, Lichter K E, Zaorsky N G, et al. Using hypofractionation to decarbonise radiation oncology BMJ 2024; 386 :e079072 doi:10.1136/bmj-2023-079072 [2] Griffiths J, Adshead F, Al-Shahi Salman R, et al. What is the carbon footprint of academic clinical trials? BMJ Open 2024;14:e088600. doi: 10.1136/bmjopen-2024-088600 [3] Shenker RF, Johnson TL, Ribeiro M, et al. Estimating Carbon Dioxide Emissions and Direct Power Consumption of Linear Accelerator-Based External Beam Radiation Therapy. Adv Radiat Oncol . 2022 Dec 31;8(3):101170. doi: 10.1016/j.adro.2022.101170 [4] T.Dvorak, A.P. Shah, J.M. Rineer, et al. Carbon Footprint of Clinical Photon Therapy: Initial Estimates IJROPB 2022;114;e337. doi: 10.1016/j.ijrobp.2022.07.1426

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Digital Poster Adaptive Radiotherapy for Lung Cancer in clinical practice in Andalucía, Spain: a multicenter survey on implementation, techniques, and challenges. Paloma Sosa Fajardo 1 , Maria Ángeles González Ruiz 2 , Paula Simón Silva 3 , Ena Isabel Pérez 4 , Alicia Román Jobacho 5 , Ana Torres 6 , Irene Fajardo Paneque 7 , Carmen Bueno 8 , Nuria Linares Mesa 9 , Rosa María León-Salas Ordóñez 10 , Imanol Paguey Garrido 11 , Daniel Rivas 12 , Jon Andreescu 13 , Escarlata López Ramírez 14 , José González Ferreira 15 , Yolanda Ramírez Castilla 11 , Elena Montero Perea 1 , Jesús Blanco Suárez 1 , Eva Tejada Ortigosa 1 , Jose Luis López Guerra 1 , Sara Garduño 9 , Alba Ruiz Martínez 16 , Rocío Jiménez Salas 4 , 24. On behalf of the GACAP-SAC group 17 1 RADIATION ONCOLOGY, Hospital Universitario Virgen del Rocío, Sevilla, Spain. 2 RADIATION ONCOLOGY, Hospital Universitario Virgen Macarena, Sevilla, Spain. 3 RADIATION ONCOLOGY, Hospital Universitario Torrecárdenas, Almería, Spain. 4 RADIATION ONCOLOGY, Hospital Universitario de Jaén, Jaen, Spain. 5 RADIATION ONCOLOGY, Hospital Virgen de la Victoria, Málaga, Spain. 6 RADIATION ONCOLOGY, Hospital Punta Europa, Cádiz, Spain. 7 RADIATION ONCOLOGY, Hospital Clínico Universitario de Jerez de la Frontera, Cádiz, Spain. 8 RADIATION ONCOLOGY, Hospital Reina Sofía, Córdoba, Spain. 9 RADIATION ONCOLOGY, Hospital Universitario Juan Ramón Jiménez, Huelva, Spain. 10 RADIATION ONCOLOGY, Hospital Universitario San Cecilio, Granada, Spain. 11 RADIATION ONCOLOGY, GenesisCare Jerez de la Frontera, Cádiz, Spain. 12 RADIATION ONCOLOGY, GenesisCare Málaga, Málaga, Spain. 13 RADIATION ONCOLOGY, GenesisCare Córdoba, Córdoba, Spain. 14 RADIATION ONCOLOGY, GenesisCare Granada, Granada, Spain. 15 RADIATION ONCOLOGY, GenesisCare Sevilla, Sevilla, Spain. 16 RADIATION ONCOLOGY, Hospital Universitario Virgen de las Nieves, Granada, Spain. 17 RADIATION ONCOLOGY, Grupo Andaluz de Cáncer de Pulmón – Sociedad Andaluza de Cancerología, Andalucía, Spain Purpose/Objective: To analyze the current clinical practice of adaptive radiotherapy in lung cancer (LC-ART) in public and private spanish centers, focusing on implementation, imaging modalities, dosimetric methodologies, and perceived barriers, as well as exploring the evolving role of radiotherapy technologists (RTTs) in online LC-ART.