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DiscussionWhy does PSMA Pet Scan show no evidence of mets? Missing something?
Prostate Cancer | Last Active: Jan 3 5:12pm | Replies (40)Comment receiving replies
Replies to "@brianjarvis I’m having a pet scan at Mayo Rochester tomorrow. Their website talks mainly about PSMA..."
@dribbles
Doctors at the conferences I’ve attended to have said that the choline PET scan is not worth doing. Mayo is the only one that uses this scan, After all the years they’ve been using it, you would think they would at least have it at your places, but they don’t because it is not as effective as a PSMA pet scan.
Here is a slide From one of the conferences that shows the different PET scan results. The choline scan does not show the spots in the spine and over does the spots in the pelvic area When compared to a PSMA pet scan.
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@dribbles Yes, these days facilities use one of the 3 PSMA PET scans (Gallium68, Pylarify, or Posluma), and fall back to one of the 3 pre-PSMA PET scans (Axumin, Choline C11, or F18-FDG) should the patient be PSMA negative.
It’s quite well documented, and Mayo even mentions that Choline C-11 is preferable to other forms of “conventional imaging” on their web site: https://www.mayoclinic.org/tests-procedures/choline-c-11-pet-scan/care-at-mayo-clinic/pcc-20384630 (PSMA PET scans are referred to as “next generation imaging.”)
“Pet Ct scan” is a generic term that applies to any of them. You’ll have to ask which one of the PSMA PET scans they’re using.
Dr. Johnson (of Mayo Clinic) talks about all this in his presentation, starting with the scans we’ve all heard about (MRI, bone, & CT scans), and then going into detail about PSMA PET scans: https://youtu.be/JoJomACA5UM