Hi @DanielAustria,
Apologies I split this to a new topic cause I feel we should really have a photon vs proton therapy topic.
My understanding from various discussions with oncologist is that the preference of photon vs proton is heavily dependent on tumour location. In general if the mass is lower they prefer to use photon cause they feel there is benefit from the additional spread.
I would be very careful about thinking that proton is unconditionally better, for some cases it is undeniably better for others it is not, and in some cases its the flip of a coin.
Good luck with Radiotherapy, highly recommend you read through Staying still during radiotherapy