Permanent Implants

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Implant Therapy "Brachytherapy" (Radiation Oncology)

Permanent Implants

Approximately 50 to 150 very small metal seeds are placed directly into the tumor while the patient is in the operating room. The seeds remain permanently in the patient, but they decay completely (i.e., are no longer radioactive) in 6 months (Pd-103) to 20 months (I-125).

This type of therapy is used mostly to treat prostate cancer, but is sometimes used to treat brain cancer.

There is a small possibility that seeds may become dislodged from the prostate implant patient, and are usually found in the urine. If you suspect that a seed has become dislodged, and is somewhere in the room, (other than the toilet), DO NOT ATTEMPT TO PICK UP THE SEED. A dislodged seed will not be a significant radiation hazard in the patient's room, but could result in a radiation dose to the hand and fingers if not handled properly.

Radioisotope size and appearance: Pd-103 or I-125 seeds are 5 mm x 1 mm.

I-125 seedI-125 seed
I-125 seeds

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