Oskarpr: I had narrowed down my research to either the Mridian machine or Proton Therapy from Meva.

Many success stories with Proton, but I felt that the overall experience and safety because of the built-in MRI was better with the Mridian or any machine where you can see what’s happening in real time, the narrow beam and Non exit attributes of Proton Therapy beams notwithstanding.

if real time Mri was not available, I would have done the Proton and if it was today, and that was the case, I would find a doctor that would do the bio-protect spacer as I understand that provides more room to separate the rectum from the prostate. I had three Radiation oncologists raise a concern about rectum bleeding with Proton Therapy. All three had extensive Proton Therapy experience. It is something worth discussing with your doctor.