title: Assessment of intake and internal dose from iodine-131 for exposed workers handling radiopharmaceutical products.
abstract: Two methods for determination of internal dose due to (131)I intake during the preparation and handling of iodine radiopharmaceutical products have been compared. The first method was based on the measurement of (131)I in 24-hour urine samples while the second method was based on the measurement in vivo of (131)I in thyroid. The results have shown that urine analysis method can be used as a screening test but not for internal dose assessment of exposed workers. Thyroid monitoring method was found to be more reliable and accurate method for assessing internal dose from (131)I intake. In addition, the assessed internal dose showed that the annual internal effective dose for some workers was below 1 mSv with no risk classification, whereas the results of other group of workers were between 1 and 6 mSv with low risk classification. Only one worker reached 7.66 mSv with high risk classification; and this worker must be monitored individually.
authors.affiliation: Department of Protection and Safety, Atomic Energy Commission of Syria, Damascus, P.O. Box 6091, Syria. Electronic address: prscientific2@aec.org.sy.
authors.forename: A
authors.initials: A
authors.lastname: Bitar
authors.forename: M
authors.initials: M
authors.lastname: Maghrabi
authors.forename: A W
authors.initials: AW
authors.lastname: Doubal
mesh_terms: D002138:Calibration; D006801:Humans; D007457:Iodine Radioisotopes / Q000009:adverse effects* / Q000032:analysis*; D016273:Occupational Exposure; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D019275:Radiopharmaceuticals / Q000009:adverse effects* / Q000032:analysis*; D012307:Risk Factors; D012984:Software; D013051:Spectrometry, Gamma / Q000295:instrumentation / Q000706:statistics & numerical data; D013961:Thyroid Gland / Q000528:radiation effects
chemical_list: D007457:Iodine Radioisotopes; D019275:Radiopharmaceuticals
keywords: Intake; Internal dose; Iodine-131; Occupational monitoring program; Syria