The procedure works by reducing or stopping blood flow to the vessels that supply the central part of the prostatic tissue, thus relieving symptoms.

There are usually one or two vessels on each side (right and left) which supply the blood for the prostate. The interventional radiologist will insert a catheter into a blood vessel in your groin and guide the catheter under imaging to each prostatic artery. They will then inject microparticles (resin particles smaller than a grain of sand) into the prostatic arteries, causing the blood flow to the central tissue of the prostate to decrease or stop.