for men with more advanced stages of prostate cancer, new prostate-specific membrane antigen (psma) imaging technology can help pinpoint the cancer. according to dr. fred saad, professor and chief of urology at the university of montreal hospital centre (chum), a psma pet scan can be used to learn more about the cancer and inform how to move forward with disease management. “this advanced imaging modality helps us visualize where cancer is, especially when there are concerns it may have spread outside of the prostate.”
during the scanning process, a patient is injected with a radioactive substance that binds to the psma usually found on prostate cancer cells.
“psa testing simply gives a high or low reading but will not confirm metastases,” explains dr. rendon. “the psma test ‘lights up’ wherever there is prostate cancer, whether it’s in the bones, liver, lymph nodes, etc. the reason it is so good is that it can detect abnormalities much earlier, versus regular bone scans, cat scans, or mris, so we can more accurately stage patients and determine next steps.”
konantz compares psma scanning to night vision for helicopter pilots. “psma screening is a real game-changer
to help people deal with advanced prostate cancer. in my case, it found cancer in my spine, so we were able to eradicate it with radiation.”