Understanding prostate fiducial markers
To effectively treat prostate cancer, doctors need a clear and accurate view of the prostate during radiation for prostate cancer. To help improve this view, you may have a procedure to place tiny metal (typically gold) spheres, coils, or cylinders, known as fiducial markers, in your prostate.
Fiducial markers help your treatment team line up the radiation beams to make sure your radiation therapy is delivered the same way each time. This helps them target your tumor with greater accuracy enabling the team to deliver the maximum radiation dose to the tumor while avoiding your healthy tissue surrounding the cancer. The fiducial markers are about the size of a grain of rice and will remain in your prostate after treatment.