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NCRP Commentary No. 11, Dose Limits for Individuals Who Receive Exposure from Radionuclide Therapy Patients
NCRP Commentary No. 11 is a result of concern about the exposure of family members of recently discharged radionuclide therapy patients. This subject was last addressed in NCRP Report No. 37 entitled, Precautions in the Management of Patients Who Have Received Therapeutic Amounts of Radionuclides, which was published in 1972. Family members of radionuclide therapy patients would usually be considered members of the public and, therefore, would normally be limited to 1 mSv annually. However, because of the infrequent nature of the exposure and because of the benefits that accrue to a family from a patient's radiation therapy. Commentary No. 11 considers it acceptable for family members of such patients to accrue up to 5 mSv annually and that there may be specific instances when the patient's physician would allow a member of the patient's family to receive an exposure of up to 50 mSv annually. In cases when such an exposure is anticipated, training and individual monitoring should be provided. In the Commentary, there is a discussion of the different types of therapy that can be provided and of the potential exposure from each therapeutic modality. Material in an appendix provides examples of the various situations that can occur. Ultimately, the material in the Commentary is to be included in the revision on NCRP Report No. 37 which is now underway.
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