Patients are referred for proton therapy based on a reduction of risk of late toxicity which is established on consensus guidelines and multidisciplinary discussions in a study panel/consensus conference. However, this reduction is calculated based on the referring center's treatment planning scan and patient setup.
The aim of this national study is to investigate whether the calculated reduction of risk of toxicity with proton therapy at the referring centers differs from the actual delivered plan at DCPT (ΔNTCP in delivered proton therapy plan versus reference photon plan from referring center).
The study also aims to investigate effect and side effects of proton and photon radiotherapy, including a systematically prospective registration of acute and late side effects and to evaluate the use of a model-based approach to select patients for proton therapy.
