A PSMA Pet/CT is to determine if it spread at this point that is all. But you won't get Tulsa, IRE or any other without it. So if thinking of one of those alternative treatments, some doctor can order PSMA Pet/CT for you, Dr Scionti in FL ordered mine but I did it local to me. There is some talk of using PSMA to ablate PCa too, but that is not in the US right now. PSMA will say where the cancer is and if they can proceed with alternative treatments or not, so likely you will encounter it depending on what you decide. They also have to check for calcium deposits with a regular CT of prostate first or before the PSMA pet, so it is a process of several imaging where they also look at size of prostate and calcium deposits. If there is calcium, it can interfere with the ultrasound beam used in Tulsa and why they do a regular CT first. I had no calcium deposits, but small ones they still can go ahead. The size is limited somewhat in that from urethra to edge of prostate has some maximum. But I had a large prostate and was ok.