In comparison, Proton treatments are much more than photons, costwise.... even with much lesser numbers of the former. But, if one's insurance or Medicaid will cover the Proton treatments, I do feel it's definitely a choice still. Even with Proton treatments, they are sometimes done with more treatments than 5. I've discovered that different oncologists, even when they're all located at the Mayo clinics, all still have varying #'s of sessions they prescribe, no matter the type of radiation. All of that is determined, too, of course, to each patient's evaluations individually. My wife and I met a number of patients, even in the IMRT treatment section, that would have varying amounts of prescribed sessions from 5 to 42. One thing you can trust, tho, that each is doing the Best for that particular PC patient. 🙂