The Public Radiation Protection From Patients Received Iodine-131 Treatment For Hyperthyroidism And Differentiated Thyroid Carcinoma

Aim: Radioactive Iodine-131(¹³¹I) has been used successfully for decades in the treatment of hyperthyroidism and differentiated thyroid carcinoma(DTC). The patients received ¹³¹I are external radiation sources and have potential exposure to the members of the public due to contact with these patients. The International Commission on Radiological Protection(ICRP) stated that the annual dose limit for members of the public is 1mSv. The aims of the study were to measure the expose rate(ER) and equivalent dose rate(EDR)of the patients after ¹³¹I administration and estimate the total effective dose equivalent(TEDE) received by family members, fellow travellers and colleagues without restriction and recommend discharge day and restricted peroids to limit contact between a patient and a member of the public for radiation safety of the public.Materials and methods: The study population consisted of three groups, hyperthyroidism group(group G, n=43), DTC ablation group(group A, n=41) and DTC metastasis group(group M, n=38). The measurements were taken at 1h, 24h, 48h, 72h, 96h, 120h, 144h, and 168h after ¹³¹I administration and ER and EDR of each patient were measured at 0.3m, 1.0m and 2.0m from the anterior mid trunk of patients using RAM GENE— 1(ROTEM Industries Ltd,...