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Thyroid doses from intake of radioiodine isotopes (131I, 132Te+132I, and 133I) and associated uncertainties were revised for the 13,204 Ukrainian-American cohort members exposed in childhood and adolescence to fallout from the Chornobyl nuclear power plant accident. The main changes related to the revision of the 131I thyroid activity measured in cohort members, the use of thyroid-mass values specific to the Ukrainian population, and the revision of the 131I ground deposition densities in Ukraine. Uncertainties in doses were assessed considering shared and unshared errors in the parameters of the dosimetry model. Using a Monte-Carlo simulation procedure, 1,000 individual stochastic thyroid doses were calculated for each cohort member. The arithmetic mean of thyroid doses from intake of 131I, 132Te+132I, and 133I for the entire cohort was 0.60 Gy (median = 0.22 Gy). For 9,474 subjects (71.6% of the total), the thyroid doses were less than 0.5 Gy. Thyroid doses for 42 cohort members (0.3% of the total) exceeded 10 Gy while the highest dose was 35 Gy. Intake of 131I contributed around 95% to internal thyroid exposure from radioiodine isotopes. The geometric standard deviation of individual stochastic thyroid doses varied among cohort members from 1.4 to 4.3 with an arithmetic mean of 1.6 and a median of 1.4. It was shown that the contribution of shared errors to the dose uncertainty was small. The revised thyroid doses resulted, in average, in around 40% decrease for cohort members from Zhytomyr Oblast and an increase of around 24% and 35% for the cohort members from Kyiv and Chernihiv Oblast, respectively. Arithmetic mean of TD20 doses for the cohort was around 8% less than that estimated in TD10, 0.60 Gy vs. 0.65 Gy, respectively; however, global median of TD20 doses somewhat increased compared to TD10: 0.22 Gy vs. 0.19 Gy, respectively. The difference between TD10 and TD20 was mainly due to a revision of the individual 131I thyroid activity measured in the cohort members.

Titel:	Exposure to the Thyroid from Intake of Radioiodine Isotopes after the Chornobyl Accident. Report I: Revised Doses and Associated Uncertainties for the Ukrainian-American Cohort.
Autor/in / Beteiligte Person:	Masiuk, S ; Chepurny, M ; Buderatska, V ; Ivanova, O ; Boiko, Z ; Zhadan, N ; Mabuchi, K ; Cahoon, EK ; Little, MP ; Kukush, A ; Bogdanova, T ; Shpak, V ; Zamotayeva, G ; Tronko, M ; Drozdovitch, V
Zeitschrift:	Radiation research, Jg. 199 (2023), Heft 1, S. 61-73
Veröffentlichung:	Bozeman, MT : Radiation Research Society ; <i>Original Publication</i>: Charlottesville, VA : Kluge Carden Jennnings Pub. Co., 2023
Medientyp:	academicJournal
ISSN:	1938-5404 (electronic)
DOI:	10.1667/RADE-21-00152.1
Schlagwort:	Adolescent Humans Iodine Radioisotopes Thyroid Gland Tellurium analysis Radiation Dosage Uncertainty Ukraine epidemiology Chernobyl Nuclear Accident Neoplasms, Radiation-Induced epidemiology Neoplasms, Radiation-Induced etiology Thyroid Neoplasms epidemiology
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Publication Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, N.I.H., Intramural; Research Support, Non-U.S. Gov't Language: English [Radiat Res] 2023 Jan 01; Vol. 199 (1), pp. 61-73. MeSH Terms: Chernobyl Nuclear Accident* ; Neoplasms, Radiation-Induced* / epidemiology ; Neoplasms, Radiation-Induced* / etiology ; Thyroid Neoplasms* / epidemiology ; Adolescent ; Humans ; Iodine Radioisotopes ; Thyroid Gland ; Tellurium / analysis ; Radiation Dosage ; Uncertainty ; Ukraine / epidemiology References: Int J Cancer. 2017 Oct 15;141(8):1585-1588. (PMID: 28662277) ; J Environ Radioact. 2013 Feb;116:84-92. (PMID: 23103580) ; Health Phys. 2004 Jun;86(6):565-85. (PMID: 15167120) ; Probl Radiac Med Radiobiol. 2020 Dec;25:285-299. (PMID: 33361841) ; Biostatistics. 2016 Jul;17(3):422-36. (PMID: 26795191) ; Radiat Res. 2006 Jul;166(1 Pt 2):271-86. (PMID: 16808613) ; Radiat Environ Biophys. 2021 Nov;60(4):591-609. (PMID: 34351497) ; Environ Res. 2017 Jul;156:801-809. (PMID: 28505591) ; Radiat Res. 2015 Jan;183(1):27-41. (PMID: 25496314) ; Radiol Oncol. 2011 Jun;45(2):143-6. (PMID: 22933948) ; Radiat Res. 2015 Feb;183(2):159-173. (PMID: 25574587) ; J Environ Radioact. 2005;78(3):311-29. (PMID: 15511565) ; PLoS One. 2014 Jan 29;9(1):e85723. (PMID: 24489667) ; Health Phys. 2004 Jul;87(1):15-32. (PMID: 15194919) ; Health Phys. 2014 Mar;106(3):370-96. (PMID: 25208014) ; Radiat Environ Biophys. 2021 Mar;60(1):179-191. (PMID: 33392786) ; Radiat Prot Dosimetry. 2003;105(1-4):593-9. (PMID: 14527033) ; Health Phys. 2020 Jan;118(1):18-35. (PMID: 31764419) ; Health Phys. 2016 Jan;110(1):74-92. (PMID: 26606068) ; J Environ Radioact. 2005;84(3):343-62. (PMID: 16024139) ; Health Phys. 2002 Mar;82(3):290-303. (PMID: 11845832) ; Radiat Res. 2015 Aug;184(2):203-18. (PMID: 26207684) ; J Natl Cancer Inst. 2006 Jul 5;98(13):897-903. (PMID: 16818853) ; Ann ICRP. 1993;23(3-4):1-167. (PMID: 7978694) ; Ann ICRP. 1995;25(3-4):1-405. (PMID: 8735008) ; Ann ICRP. 1994;24(1-3):1-482. (PMID: 7726471) ; Radiat Environ Biophys. 2021 May;60(2):267-288. (PMID: 33661398) ; Health Phys. 2013 Jan;104(1):78-86. (PMID: 23192090) ; Environ Health Perspect. 2011 Jul;119(7):933-9. (PMID: 21406336) ; J Environ Radioact. 2007;98(1-2):104-36. (PMID: 17766017) ; Health Phys. 2020 Aug;119(2):222-235. (PMID: 33290004) ; J Radiat Res. 2022 May 18;63(3):364-377. (PMID: 35301522) Grant Information: HHSN261201600298P United States CA NCI NIH HHS; Z99 CA999999 United States ImNIH Intramural NIH HHS Substance Nomenclature: 0 (Iodine-133) ; 0 (Iodine-132) ; 0 (Iodine-131) ; 0 (Iodine Radioisotopes) ; 0 (Tellurium-132) ; NQA0O090ZJ (Tellurium) Entry Date(s): Date Created: 20221111 Date Completed: 20230111 Latest Revision: 20240102 Update Code: 20240102 PubMed Central ID: PMC9899004

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Exposure to the Thyroid from Intake of Radioiodine Isotopes after the Chornobyl Accident. Report I: Revised Doses and Associated Uncertainties for the Ukrainian-American Cohort.