ESTRO 2025 - Abstract Book

S3168

Physics - Inter-fraction motion management and offline adaptive radiotherapy

ESTRO 2025

Conclusion: No statistically significant differences in target coverage were observed for daily and cumulative delivered dose reconstructions between No repainting relative to 5 and 3 repaintings. Analysis of 4D dose distributions using log files demonstrated that all repainting methods produced comparable coverage for most target structures, with slightly higher variability observed in the No repainting group for specific targets, such as the internal mammary nodes.

Keywords: Proton Therapy for Breast Cancer, interplay

3281

Digital Poster SWOT Analysis of Online Adaptive Particle Therapy: Results from the EPTN adaptive task group Lena Nenoff 1,2,3 , Petra Trnková 4 , Federica Bertini 5 , Grete M Engeseth 6 , Per-Ivar Lønne 7 , Silvia Molinelli 8 , Hanna R Mortensen 9,10 , Andreia Maia Oliveira 11 , Giovanni Pirrone 12 , Lorenzo Placidi 13 , Kristin Stützer 1,2 , Juliette Thariat 14 , Mirko Unipan 15 , Eva van Weerd 16 , Rita Simoes 17 , Pieter Populaire 18,19 , Francesca Albertini 20 1 Faculty of Medicine, OncoRay – National Center for Radiation Research in Oncology, Dresden, Germany. 2 Institute of Radiooncology – OncoRay, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany. 3 Faculty of Medicine Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany. 4 Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic. 5 Radiation Oncology Department, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano, Italy. 6 Cancer Clinic, Haukeland University Hospital, Bergen, Norway. 7 Department of Medical Physics, Oslo University Hospital, Oslo, Norway. 8 CNAO, National Center of Oncological Hadrontherapy, Pavia, Italy. 9 Danish Center for Particle Therapy, Aarhus University hospital, Aarhus, Denmark. 10 Department of Clinical Medicine, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark. 11 Department of Medical Physics, EBG MedAustron GmbH, Wiener Neustadt, Austria. 12 Medical Physics Department, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano, Italy. 13 Department of Diagnostic Imaging and Radiotherapy Oncology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy. 14 Department of Radiation Oncology, Centre François Baclesse, Caen, France. 15 Department of Radiation Oncology (Maastro Clinic), GROW School for Oncology, Maastricht University Medical Centre+, Maastricht, Netherlands. 16 Care development team, HollandPTC, Delft, Netherlands. 17 Proton beam therapy department, University College London Hospitals, London, United Kingdom. 18 Department of Oncology – Laboratory of Experimental Radiotherapy, KU Leuven, Leuven, Belgium. 19 Department of Radiation Oncology, University Hospitals Leuven, Leuven, Belgium. 20 Center for Proton Therapy, Paul Scherrer Institut, Villigen, Switzerland