ESTRO 2025 - Abstract Book

S2546

Physics - Autosegmentation

ESTRO 2025

Conclusion: AIaid in PCa patients reduces delineation time by nearly half and greatly reduces inter-observer variation. However, AIaid may introduce local, unintended changes as clinicians could inadvertently lean towards the AI prediction.

Keywords: clinical experience, pelvis, prostate

3824

Proffered Paper Gross Tumour Volume segmentation by federated deep learning using real-world data of 3500+ lung cancer patients from 20 institutions in10 countries Leroy Volmer 1 , Ananya Choudhury 1 , Johan van Soest 1,2,3 , Andre Dekker 1,2 , Diogo FDC Patrao 4 , Bram Steiltjes 5 , Emiliano Spezi 6 , Rajesh Jena 7 , Gareth Price 8 , Hannah M Thomas 9 , Zhang Zhen 10 , Robin Wijsman 11 , Andrea Damiani 12 , Rogier Janssen 13 , Brent van der Heyden 14 , John Lilley 15 , Thomas J Dilling 16 , Abdul Nazeer 17,18 , Tomas Janssen 19 , Per Ivar Lønne 20 , René Monshouwer 21 , Zhen Zhang 22 , Ying Xiao 23 , Stephanie Tanadini-Lang 24 , Leonard Wee 1 1 Department of Radiation Oncology (Maastro), Maastricht University Medical Centre+, Maastricht, Netherlands. 2 Medical Data Works B.V., Medical Data Works B.V., Maastricht, Netherlands. 3 Brightlands Institute for Smart Society (BISS), Maastricht University, Heerlen, Netherlands. 4 Dept of Radiotherapy, Albert Einstein Hospital, Sao Paolo, Brazil. 5 Dept of Radiotherapy, University Hospital Basel, Basel, Switzerland. 6 School of Engineering, Cardiff University, Cardiff, United Kingdom. 7 Dept of Radiotherapy, Cambridge University Hospitals Addenbrookes, Cambridge, United Kingdom. 8 Cancer Digital Sciences and Machine Learning, University of Manchester, Manchester, United Kingdom. 9 Dept of Radiotherapy, Christian Medical College Vellore, Vellore, India. 10 Dept of Radiotherapy, Fudan University Shanghai Cancer Centre, Shanghai, China. 11 Dept of Radiotherapy, University Medical Centre Groningen, Groningen, Netherlands. 12 Real-world Evidence, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy. 13 Dept of Radiotherapy, Isala, Zwolle, Netherlands. 14 Dept of Radiotherapy, Catholic University of Leuven, Leuven, Belgium. 15 Dept of Radiotherapy, Leeds Cancer Centre, Leeds, United Kingdom. 16 Dept of Radiotherapy, Moffitt Cancer Centre and Research Institute, Tampa, USA. 17 Dept of Informatics, National Institute of