I'm sorry. All I know is that I'm glad I had the PET before the lymph nodes were removed. It showed the source was tonsil and allowed me to start radiation rather than the neck disection.
My understanding was that any cancer cells would light up. I thought it was CTs that only showed larger tumors and not small ones.
Anyway. I won't be commenting on PETs anymore.

Chris


Stage 4 squamous cell tonsil cancer. Two lymph nodes involved surgically removed before source found to be tonsil. Implant radiation right on tonsil, regular mask radiation therapy for two months and a final Implant radiation. All clear confirmed by PET scans for 6 years.