rockin2047: a lot has happened since I posted that in November as a patient but to answer your questions, the MRIdian was what I ended up using. It was 5 treatments with 2 mm margins. My last treatment was February 14. The margins are really important and the margins are from the edge of the prostate. I had the same concern as you regarding healthy tissue. So far the side effects for me are some urine restriction but Flomax gives me about 85% urine flow and I feel a bit more tired than usual.

I looked into HIFU which struck me as limited data with results that anecdotally did not last. I looked into cyberknife, brachytherapy, cryo and heat ablation…and narrowed it down to Proton therapy and the MRIdian from Viewray. I chose the MRIdian for its narrow margins, real time MRI/radiation combo unit and automatic gating shutoff.

I did not spend any time on webmd. You may want to look at nccn.org formed by Dr’s for Dr’s and patients. I would also consider spaceoar.