Mark, they weren't going to do a scan in my case until I had a recurrence and pitched a royal hissy about having only one side of my neck radiated (long story, very boring). Anyway, I wonder if it is the area doctors, the number of false positives may be putting them off doing PET/CT routinely.
It turned out, by the way, that my PET lit up like the Aurora Borealis, and was a false positive.
Thankfully!
Andrea