Analysis of radiation doses received by the public from 131I treatment of thyrotoxic outpatients
Date
1993
Authors
Wasserman H.J.
Klopper J.F.
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Abstract
Radiation doses to the family and general public from 131I therapy of outpatients were assessed for comparison with the 1990 International Commission on Radiation Protection (ICRP) dose limits. Doses to family members of such patients, measured by previous workers, were converted to show that on average 5.6 ± 3.7 μSv MBq-1 is received by the spouse and 1.5 ± 0.87 μSv MBq-1 by other family members. It was deduced that the average dose to the spouse (D μSv MBq-1) when couples sleep apart for T days after administration is given by: D = 2.528 + 3.072e(-0.11T) if an effective half-life, T(eff), of 6.35 days is used. The cumulative effect of repeated treatments should be considered and in view of ALARA it is recommended that couples sleep apart for at least 14 days after each administration, even if this is below limits permitted by authorities. The dose to a pregnant colleague or family member other than the wife should be below 2 mSv if the total administered activity is not more than 600 MBq. If the wife is pregnant, couples should sleep apart for at least 30 days after administration.
Description
Keywords
iodine 131, article, controlled study, human, population exposure, pregnancy, radiation protection, radioisotope therapy, thyrotoxicosis, Ambulatory Care, Family, Female, Human, Iodine Radioisotopes, Male, Public Health, Radiation Dosage, Radiation Protection, Thyrotoxicosis
Citation
Nuclear Medicine Communications
14
9
14
9