dale1k:
Your welcome. I decided to do the Spaceoar after speaking with reps from the company and my brother had it done at Cornell Weill in NYC. I liked the idea of the extra half inch protection between the rectum and the prostate. My RO put the Fiducial markers in as well, which I had no problem with (as they were already "there") both from the benefit perhaps to mapping but also as backup if technology breaks down, a discussion I have not followed up with.
Orlando Health just changed their policy regarding margins on the MRIdian, about a week ago, from 3 mm to 2 mm (hopefully minimizing even more, any side effects) because of the Mirage randomized study:
https://www.prnewswire.com/news-releases/mirage-phase-iii-randomized-controlled-trial-demonstrates-superiority-of-mridian-mri-guidance-in-stereotactic-body-radiotherapy-sbrt-for-localized-prostate-cancer-301660815.html