@hanscasteels I had 3+4 as well but no cribriform with a PSA of 11.2. I chose the mridian 5 hypo fractional treatments because it had narrow margins of 2 mm and a built in MRI which is why the margins were 2 mm. Basically, most radiation machines treat the entire prostate PLUS a margin (usually 3-5 mm) around it. The higher the margin number, the more side effects, as a general rule. Check out the Mirage randomized trial.

There is an Elekta radiation machine in Montreal or thereabouts. Elekta does make a radiation machine with built in MRI. I am not sure which machine they have as they do not all have built in MRI's.

I finished my treatment on Valentines day 2023. No real side effects to speak of other than initial urine restriction flow which Flomax took care of, overnight, and I was on that for about a month. I would make that choice again. If I ever had a biological re-Occurrence (my psa test a few weeks ago was .8 which is different than when you have your prostate removed), I would have to have another type of treatment but removal would not be the best choice as it is difficult after radiation but I knew that going in.