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Cancer that has spread to distant tissues is called metastatic prostate cancer.

It’s a very accurate type of imaging that can potentially show doctors whether your prostate cancer has spread to distant parts of your body. This type of scan is called a PSMA PET-CT scan. One type of CT scan uses a radioactive substance that targets a specific protein, called prostate-specific membrane antigen (PSMA), produced by the prostate. The combination of these two types of scans is called a PET-CT scan. During a PET scan, a substance that gives off a small amount of radiation is injected into your body, so that doctors can see how a certain part of your body is working. More commonly, doctors use them to determine whether prostate cancer has spread to lymph nodes or other structures in your pelvis.ĭoctors also sometimes combine a CT scan with another type of imaging, called a PET scan. They’re commonly used to:ĭoctors do not typically use CT scans to diagnose prostate cancer because the prostate generally doesn’t show up well on the images created by the scan. Does prostate cancer show up on a CT scan?ĬT scans are a series of X-rays that create a 3D image of the inside of your body.