I have been told that the radiation produced by PETCT is much greater than by X ray, so my oncologist prefers to use X ray imaging and CEA to monitor my situation. My last PETCT was done on 28th Nov. and the most recent X ray shows a growth from 1.2 to 1.4 cm on my right lung; however my M.D. still recommends X ray for the coming month. With sore muscles around my pelvic from time to time I am concerned whether there are any bone mets, and wondering whether a PETCT should be done to detect bone mets. So my questions are:
1. In general, how often a PETCT should be taken?
2. Should bone and other mets be detected as early as possible to facilitate early treatment, or there won't be any difference whether the mets are found earlier or later?
3. How oncologists balance the side effects of using PETCT versus the possible delayed discovery of new mets?
55 Never-smoker Asian female, diagnosed IV NSCLC July 2012, Exon 19 deletion, on Iressa since July 2012.