I have had three negative PSMA scans at UCLA in the last year. A number of those more knowledgeable than I, on this site whom I greatly respect quite, often suggest an FDG scan in addition to a PSMA Scan to look for any cancer that does not express PSA. After my last scan, I emailed Dr. Czernin at ucla (head of the imaging division at UCLA) to ask if he thought I needed any additional scans to search for Non-PSA expressing lesions. He replied as follows:
“....the PET/Ct scan not only includes the PSMA scan but also a CT scan. The Ct scan is reviewed for lesions and masses in any tissues (lymph nodes, bones, lung, liver, etc) regardless of PSMA findings. If nothing shows up on the CT and PSMA scans it is very hard for me to imagine that the axumin and the FDG scan can show anything more relevant.
Hope that this helps,
I am having difficulty reconciling this doctors response with what I have read on this site about the need for the additional scan(s). I would love some those who disagree (or agree ) with his response to explain their thinking.