Session

Overview: With advance developments in radiotherapy, the need of high quality treatment planning studies has increased dramatically. In this symposium, first, the RATING (RAdiotherapy Treatment plannINg Guidelines) project, from the first ESTRO physics workshop, will be presented, addressing the potential of treatment planning studies and possible solutions to improve their quality. Then, protons and photons comparison studies will be discussed, highlighting potential comparison power and pitfalls, and differences between trials and comparison studies. To conclude, limitations in study designs will be presented as well as the impact of different treatment planning systems and the considerations that have to be drawn from the study conclusions.