My oncologist says it is fine to have one CT scan per year now. We are doing well and there is no need for unnecessary radiation in my body. She said there is a recent study that too many X-rays can increase one's chance of secondary cancers. The magic number "they've" come up with is 15 in a lifetime, then, look out. I've counted 8 scans with cancer alone. Don't know how many I had before and predict 5-6 more in follow up. Not too worried, however, because I am already at increased risk for secondary cancers from radiation therapy. Although, "increased risk" is an ambiguous phrase. At any rate, I am happy to be cutting down to one per year.
Happy Holidays to all!