@dbamos1945
Five years seems excessive. So many changes can happen in that period of time. I agree with @sbcher. Check with your insurance; I thought two years was the benchmark. You may also look into paying for the scan yourself. I am getting a REMS scan in two weeks that my insurance, nor my rheumatologist will even acknowledge as a tool for diagnostics. It is costing me $275 which is higher than in most states but worth it for me to know.