Database of meteorological and radiation measurements made in Belarus during the first three months following the Chernobyl accident

Drozdovitch, Vladimir; Zhukova, O.M.; Germenchuk, M.G.; Khrutchinsky, A. A.; Kukhta, Tatiana; Luckyanov, Nickolas; Minenko, Victor; Podgaiskaya, Marina; Savkin, Mikhail N.; Vakulovsky, S. M.; Voilleque, P.G.; Bouville, André

doi:10.1016/j.jenvrad.2012.09.010

Cited by 31 publications

(15 citation statements)

References 16 publications

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“…Iodine-131 and 137 Cs daily deposition densities were calculated using the atmospheric transport model developed by Talerko (15, 16) for Ukraine and adapted for Belarus, using meteorological information, such as precipitation, wind speed, wind direction and temperature, that was measured at the time of fallout across the country by the Committee for Hydrometeorology of Belarus (17). The measured 137 Cs and 131 I cumulative deposition densities were used to calibrate the atmospheric transport model.…”

Section: Methodsmentioning

confidence: 99%

Thyroid Dose Estimates for a Cohort of Belarusian Children Exposed to Radiation from the Chernobyl Accident

Drozdovitch

Minenko²,

Khrouch

et al. 2013

Radiation Research

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The U.S. National Cancer Institute, in collaboration with the Belarusian Ministry of Health, is conducting a study of thyroid cancer and other thyroid diseases in a cohort of about 12,000 persons who were exposed to fallout from the Chernobyl accident in April 1986. The study subjects were 18 years old or younger at the time of exposure and resided in Belarus in the most contaminated areas of the Gomel and Mogilev Oblasts, as well as in the city of Minsk. All cohort members had at least one direct thyroid measurement made in April–June 1986. Individual data on residential history, consumption of milk, milk products and leafy vegetables as well as administration of stable iodine were collected for all cohort members by means of personal interviews conducted between 1996 and 2007. Based on the estimated 131I activities in the thyroids, which were derived from the direct thyroid measurements, and on the responses to the questionnaires, individual thyroid doses from intakes of 131I were reconstructed for all cohort members. In addition, radiation doses to the thyroid were estimated for the following minor exposure pathways: (a) intake of short-lived 132I, 133I and 132Te by inhalation and ingestion; (b) external irradiation from radionuclides deposited on the ground; and (c) ingestion intake of 134Cs and 137Cs. Intake of 131I was the major pathway for thyroid exposure; its mean contribution to the thyroid dose was 92%. The thyroid doses from 131I intakes varied from 0.5 mGy to almost 33 Gy; the mean was estimated to be 0.58 Gy, while the median was 0.23 Gy. The reconstructed doses are being used to evaluate the risk of thyroid cancer and other thyroid diseases in the cohort.

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Section: Methodsmentioning

confidence: 99%

Thyroid Dose Estimates for a Cohort of Belarusian Children Exposed to Radiation from the Chernobyl Accident

Drozdovitch

Minenko²,

Khrouch

et al. 2013

Radiation Research

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“…Dose estimation from external irradiation was based on the integration of the time‐dependent dose rate in air per unit deposition of the radionuclides mix in the settlements accounting for the shielding properties of the residential environment 23‐25 . Information on the radionuclides, including 132 Te, 131,132,133 I, 140 Ba, 140 La, 95 Zr, 95 Nb, 103,106 Ru, 134,137 Cs, 99 Mo, 125 Sb, 136 Cs, 141,144 Ce and 239 Np, deposited on the ground from the fallout in the areas of residence, served as a basis for calculation of doses to the breast from external irradiation 26,27 …”

Section: Methodsmentioning

confidence: 99%

“…[23][24][25] Information on the radionuclides, including 132 Te, 131,132,133 Mo, 125 Sb, 136 Cs, 141,144 Ce and 239 Np, deposited on the ground from the fallout in the areas of residence, served as a basis for calculation of doses to the breast from external irradiation. 26,27 Internal exposure pathway included ingestion of 134 Cs, 136 Cs and 137 Cs with locally produced milk and other foods. Radiation data included 137 Cs ground deposition density in each settlement; and (a) ratio of activity of Cs isotopes to 137 Cs ground deposition, (b) 137 Cs soil-to-cow milk transfer factor in each settlement and (c) intake function of 137 Cs with foodstuffs for adult population (in rural settlements, towns and cities) were derived from whole-body counter measurements.…”

Section: Dose Estimationmentioning

confidence: 99%

Breast cancer incidence in the regions of Belarus and Ukraine most contaminated by the Chernobyl accident: 1978 to 2016

Župunski

Yaumenenka

Ryzhov

et al. 2020

Intl Journal of Cancer

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Even 30 years after the accident, an association between breast cancer incidence and ionizing radiation exposure from Chernobyl fallout remains uncertain. We studied breast cancer incidence in the most contaminated regions of Belarus (Gomel and Mogilev) and Ukraine (Kyiv, Zhytomyr and Chernihiv) before (1978‐1986) and after (1987‐2016) the accident. Breast cancer cases and female population size data were received from the national cancer registries and the state departments of statistics. The study included 85 132 breast cancers with 150 million person‐years at risk. We estimated annual rayon (district)‐average absorbed doses to the breast from external and internal irradiation of the adult female population over the period of 1986‐2016. We studied an association between rayon‐average cumulative absorbed breast dose with 5‐year lag, that is, excluding the exposure in 5 years prior to breast cancer diagnosis, and breast cancer incidence using negative binomial regression models. Mean (median) cumulative breast dose in 2016 was 12.3 (5.0) milligray (mGy) in Belarus and 5.7 (2.3) mGy in Ukraine, with the maximum dose of 55 mGy and 54 mGy, respectively. Breast cancer incidence rates statistically significantly increased with calendar year and attained age, and were higher in urban than in rural residents. Adjusting for time, age and urbanicity effects, we found no evidence of increasing incidence with rayon‐average 5‐year lagged cumulative breast dose. Owing to ecological study design limitations, a case‐control study covering this area with individually reconstructed absorbed breast doses is needed testing for association between low‐dose protracted radiation exposure and breast cancer risk after Chernobyl.

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“…Recently, we further improved the precision of thyroid dose assessment in the study by using: ( i ) region-, sex-, and age-specific thyroid mass values for Belarusian [25] and Russian [26] children; ( ii ) characterization of distribution of settlement-specific 137 Cs deposition densities and ratios of 131 I to 137 Cs activities in deposition obtained from radiation measurements data that had been collected and systemized [27]; and ( iii ) proper separation of sources of shared and unshared errors in dosimetry models [28].…”

Section: Methodsmentioning

confidence: 99%

Thyroid Cancer after Exposure to Radioiodine in Childhood and Adolescence: 131I-Related Risk and the Role of Selected Host and Environmental Factors

Župunski

Ostroumova

Drozdovitch

et al. 2019

Cancers

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In this study, we expanded on a previously published population-based case-control study on subjects exposed to iodine-131 (131I) from Chernobyl fallout at age ≤18 years using improved individual 131I absorbed thyroid doses. We further studied the impact of iodine deficiency and other selected host risk factors on 131I-related thyroid cancer risk after childhood exposure. We included 298 thyroid cancer cases and 1934 matched controls from the most contaminated regions of Belarus and the Russian Federation. We performed statistical analysis using conditional logistic regression models. We found a statistically significant linear quadratic dose-effect association between thyroid cancer and 131I thyroid dose in the range up to 5 grays (Gy). Self-reported personal history of benign nodules, any thyroid disease except thyroid cancer, family history of thyroid cancer, increased body mass index, and deficient stable iodine status at the time of the accident were statistically significant risk factors (p < 0.05 for each factor) for thyroid cancer after adjustment for thyroid 131I dose effect. Subjects who received stable iodine supplementation in the years after the accident had a significantly lower 131I-related risk of thyroid cancer. Our findings are important for thyroid cancer prevention, and for further improvement of medical surveillance in the affected populations.

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Database of meteorological and radiation measurements made in Belarus during the first three months following the Chernobyl accident

Cited by 31 publications

References 16 publications

Thyroid Dose Estimates for a Cohort of Belarusian Children Exposed to Radiation from the Chernobyl Accident

Thyroid Dose Estimates for a Cohort of Belarusian Children Exposed to Radiation from the Chernobyl Accident

Breast cancer incidence in the regions of Belarus and Ukraine most contaminated by the Chernobyl accident: 1978 to 2016

Thyroid Cancer after Exposure to Radioiodine in Childhood and Adolescence: 131I-Related Risk and the Role of Selected Host and Environmental Factors

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