PSMA PET scanning is a relatively new diagnostic technology that greatly assists in localising the extent of prostate cancer. It can do this not only in the area of the prostate but also in the lymph glands and bones. As a result, therapy can be targeted more appropriately.

PSMA PET/CT scanning is much more accurate than other scanning methods described to date. This includes the more established Choline PET-CT scan. However, whilst PSMA PET/CT scanning is a very sensitive imaging technology (especially when the PSA is above 0.2) in less than 2% of patients a positive scan proves to be a false positive.

Overall it has been a major advance in the detection of secondary cancer.