Farina
I've lost track of how many Petscans, MRIs and CTs I've had over the last five years (good project to check on those numbers from my files), but I remember worrying about each and every one of them. As for the statistics, just remember that for individual patients, it's always 100% or zero. The other figures are just approximations as spelled out in Brian's old post. (PS: you can tell it's an old archived post due to its now outdated comment that you can't do another round of radiation after getting the full dose. Paul, Kelly, myself and others are proof that is no longer the case due to advances in radiation delivery such as CyberKnife.)
Wishing you good results on the MRI
Charm