ESTRO 2020 Abstract book

S350 ESTRO 2020

Conclusion We externally validated new Dutch prediction models for dysphagia, grade 2+ and grade 3+, at 6 and 12 mo after treatment. The original grade 2+ model at 6 mo matched the Danish patients well, even though the patient cohorts are substantially different, and will be used to select patients for the DAHANCA35 trial.

Proffered Papers: Proffered papers 30 - Protons and ions

OC-0576 Timepix for characterization of mixed radiation field produced in proton radiotherapy P. Stasica 1,2 , J. Baran 1 , J. Gajewski 1 , C. Granja 3 , C. Oancea 4 , M. Pawlik-Niedźwiecka 1 , M. Rydygier 5 , A. Schavi 6 , A. Ruciński 1 1 Institute of Nuclear Physics PAN, Proton Radiotherapy Group, Krakow, Poland ; 2 AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland ; 3 ADVACAM s.r.o, ADVACAM s.r.o, Prague, Czech Republic ; 4 ADVACAM s.r.o., ADVACAM s.r.o., Prague, Czech Republic ; 5 Institute of Nuclear Physics PAN, Institute of Nuclear Physics PAN, Krakow, Poland ; 6 Sapienza University of Rome, Sapienza University of Rome, Rome, Italy Purpose or Objective The dosimetric advantage of proton radiotherapy is due to depth-dose distribution (Bragg peak, BP), which enables minimizing deposited dose in healthy tissue and