Have you guys heard of this it has just been approved by FDA in December 2020 has been successful in other countries What is a Prostate-Specific Membrane Antigen (PSMA) study? A PSMA study, also called a ProstaScint® scan, is an imaging test to locate and determine the extent of prostate cancer. PSMA studies are performed on newly diagnosed prostate cancer patients to determine if the disease has spread to pelviclymph nodes.
Yes, the most common PSMA-PET scan uses a 68Ga radionuclide. Most body tissue produces some PSMA, especially the salivary glands and prostate, and prostate cancer cells produce even more, making this an excellent test and it is now also being used in the initial diagnostic phase and not only for recurrence of PCa. Unfortunately it is not widely available in the States and your insurance may not want to pay for it. But you can look into it.
The problem is that the half-life of this tracer is only about
an hour, so an (expensive) generator has to be built at the site of the scan. The impetus for this (FDA approval) has been the bottleneck, and the approval, so far, was limited to UCLA and UCSF. Generally speaking, PSMA-PET performs better than axumin (18F) scans. Since it can detect PCa lesions anywhere, it also replaces the need for bone scans in patients who have had high-Gleason biopsies.