Radiation Safety Part Two

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External Exposure

This type of exposure results from radiation emitted by a radioactive source outside the body. Implant and radiopharmaceutical therapies may result in this type of exposure.

  1. Minimize Time - minimizing the time spent around a source of radiation will reduce the total exposure to radiation. Normally, physicians will try to minimize the amount of direct patient care.
  2. Maximize Distance - maximizing the distance from a source of radiation will reduce the total exposure to radiation. Because the radiation levels decreases rapidly with distance, even small increases is distance can have a large impact on reducing the total radiation exposure.
  3. Use Shielding - staying behind the shields as much as possible will reduce the total exposure to radiation. In patient rooms the shields are kept at the door to shield all staff and visitors, as well as discourage accidental entry without proper protective gear. The shields are only placed beside the bed during brachytherapy when patients rarely get out of their beds.

Lead Shield



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