Radioactive seeds are inserted directly into the prostate gland where they emit low-level radiation.
Permanent Seed Implants
Small radioactive seeds are placed in the prostate using ultrasound-guided needles. The implants deliver a high dose of radiation. While the seeds are active, side effects may include frequent urination, feeling a constant need to urinate, slight discomfort during urination, erectile dysfunction and occasional rectal bleeding. The implant procedure typically lasts about an hour and requires spinal anesthesia.
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