Gallium and Bone Scan

I had a Gallium and Bone Scan done and both came back abnormal with concentrations in several joint locations. The same radiologist performed both studies months apart and asked when I hadn't found out what was causing the first scan to be abnormal. I am in pain 24/7 was given pain meds and can't seem to get a real answer about what is causing the problem. Perhaps you could suggest some ideas.