title: Measurement of131I activity in thyroid of nuclear medical staff and internal dose assessment in a Polish nuclear medical hospital.
abstract: This paper presents results of131I thyroid activity measurements in 30 members of the nuclear medicine personnel of the Department of Endocrinology and Nuclear Medicine Holy Cross Cancer Centre in Kielce, Poland. A whole-body spectrometer equipped with two semiconductor gamma radiation detectors served as the basic research instrument. In ten out of 30 examined staff members, the determined131I activity was found to be above the detection limit (DL = 5 Bq of131I in the thyroid). The measured activities ranged from (5 ± 2) Bq to (217 ± 56) Bq. The highest activities in thyroids were detected for technical and cleaning personnel, whereas the lowest values were recorded for medical doctors. Having measured the activities, an attempt has been made to estimate the corresponding annual effective doses, which were found to range from 0.02 to 0.8 mSv. The highest annual equivalent doses have been found for thyroid, ranging from 0.4 to 15.4 mSv, detected for a cleaner and a technician, respectively. The maximum estimated effective dose corresponds to 32% of the annual background dose in Poland, and to circa 4% of the annual limit for the effective dose due to occupational exposure of 20 mSv per year, which is in compliance with the value recommended by the International Commission on Radiological Protection.
authors.affiliation: Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Kraków, Poland. kamil.brudecki@ifj.edu.pl.
authors.forename: K
authors.initials: K
authors.lastname: Brudecki
authors.affiliation: Department of Endocrinology and Nuclear Medicine, Holy Cross Cancer Center, Artwińskiego 3, 25-734, Kielce, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Kowalska
authors.affiliation: Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Kraków, Poland.|Department of Food Chemistry and Nutrition, Medical College, Jagiellonian University, 30-688, Kraków, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Zagrodzki
authors.affiliation: Department of Endocrinology and Nuclear Medicine, Holy Cross Cancer Center, Artwińskiego 3, 25-734, Kielce, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Szczodry
authors.affiliation: Pedagogical University in Cracow, Podchorążych 2, 30-084, Kraków, Poland.
authors.forename: T
authors.initials: T
authors.lastname: Mroz
authors.affiliation: AGH University of Science and Technology, Mickiewicza 30, 30-059, Kraków, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Janowski
authors.affiliation: Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Kraków, Poland.
authors.forename: J W
authors.initials: JW
authors.lastname: Mietelski
mesh_terms: D000328:Adult; D005260:Female; D006761:Hospitals; D006801:Humans; D007457:Iodine Radioisotopes / Q000032:analysis*; D008297:Male; D008503:Medical Staff; D008875:Middle Aged; D008954:Models, Biological; D009683:Nuclear Medicine; D016273:Occupational Exposure / Q000032:analysis; D011044:Poland; D011834:Radiation Monitoring; D011851:Radioactivity; D013961:Thyroid Gland / Q000528:radiation effects
chemical_list: D007457:Iodine Radioisotopes
keywords: 131I; Internal doses; Medical personnel; Nuclear medicine; Thyroid