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Brachytherapy, or "seed implantation" is a type of radiation therapy that involves placing radioactive seeds in the prostate where they remain permanently. The procedure is performed under anaesthetic with the patient positioned on his back, hips and knees flexed.
A small ultrasound probe is placed in the rectum. A picture of the prostate is generated and used to guide the placement of the brachytherapy seeds. Approximately 100 seeds, each about the size of a grain of rice, are inserted above the rectum into the prostate.
The seeds deliver a balanced dose of radiation to the prostate over a 6 month period.
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