Today I got the CT and bone scans recommended by the medical oncologist. Even he is "almost completely positive" they will be clean. Plus, I hope I never need his services, these will serve as a baseline. I had to drink that contrast stuff and get an IV during the CT--it always does a number on my stomach later and today was no exception.
If you've never had a bone scan, there's nothing being beamed into you. YOU are lighting up the picture by virtue of some mildly radioactive element that you get injected with earlier. You just lie on this big scanner while your temporarily radioactive bones create their own art. The result looks like this (not my picture, of course):