In the cancer center where I had my SBRT, I was told that they also use the MR Linac for prostate patients who aren't able to have the gold seed fiducial markers implanted on them. These patients will therefore receive MRI&guided radiotherapy. As I had gold seeds implanted, I received MRI-guided radio planning with a mini-CT scan before each treatment. With the wider margin in the older Elekta, plus I didn't have SpaceOAR, I might have had some damage in my rectum. I noticed some mucus & blood in my week-3 post SBRT, that cleared on week-4. Somebody indicated to me that the mucus meant the radiated healthy cells were self-repairing, the veins were still sensitive hence the little blood on the stool as it moved out. I hope this is true. Other than this, I don't know if MRI Linac + SpaceOAR would have prevented the bleeding on week-3. I'm now on week-8 post-SBRT.
How was your (and others) experience sans MRI-guided radiotherapy?