Temporary Implants

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Temporary Implants (Radiation Oncology)

An applicator is placed in the patient in the operating room after which the patient is brought to a patient room and "loaded" with the radioactive seeds or larger sources. The sources are brought to the room in a lead container on wheels which will remain in the room during the treatment. Treatment times are typically from 24 to 72 hours.

These patients will be housed in one of the lead-lined rooms on your floor, and will not leave their bed during treatment. There is a small possibility that seeds may become dislodged during treatment. If you suspect that this has occurred, please contact Radiation Safety or Radiation Oncology for proper handling. Post-treatment, these rooms will be checked for radioactive sources by the RSO or Radiation Oncology staff.

Ir-192 seeds are put into narrow catheters called "ribbons" which are about 12 inches in length. Multiple ribbons will normally be used in each patient. Catheters called "straws" are placed in the patient in the operating room after which the patient is taken to a hospital room. The ribbons are brought to the patient's room in a lead container and implanted into the patient after the lead shields have set up. After the typical treatment time of 24 to 72 hours the ribbons will be removed and transported away in the lead container.

Cs-137 applicators are placed in the patient in the operating room after which the patient is transported to a hospital room. Seeds are placed into one or two tubes that are about 6" long and brought to the patient room in a lead container. The tubes are loaded into the patient where they remain for 24 to 72 hours. After the treatment, the tubes are removed and transported away in a lead container.

Radioisotope size and appearance:

Cs-137 seed size is 20 mm x 3 mm or more. Ir-192 seed size is 0.5 mm x 3 mm. Ir-192 seeds are placed in a narrow catheter.

Cs-137 seeds

Cs-137

Ir-192 seedsIr-192 ribbon

Ir-192 seeds and ribbon


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