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  1. Article ; Online: Reliability of thyroid doses due to

    Kukhta, Tatiana / Minenko, Victor / Trofimik, Sergey / Drozdovitch, Vladimir

    Radiation and environmental biophysics

    2021  Volume 60, Issue 1, Page(s) 179–191

    Abstract: High thyroid doses due to Iodine-131 ( ...

    Abstract High thyroid doses due to Iodine-131 (
    MeSH term(s) Adolescent ; Chernobyl Nuclear Accident ; Child ; Child, Preschool ; Cohort Studies ; Dairy Products ; Dietary Exposure ; Female ; Humans ; Infant ; Iodine Radioisotopes ; Male ; Radiation Dosage ; Radiation Exposure ; Radioactive Fallout ; Republic of Belarus ; Thyroid Gland
    Chemical Substances Iodine Radioisotopes ; Iodine-131 ; Radioactive Fallout
    Language English
    Publishing date 2021-01-03
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, N.I.H., Intramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 124987-3
    ISSN 1432-2099 ; 0301-634X
    ISSN (online) 1432-2099
    ISSN 0301-634X
    DOI 10.1007/s00411-020-00882-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Assessment of Uncertainties and Errors in Post-Chernobyl Dosimetry.

    Drozdovitch, Vladimir / Masiuk, Sergii / Kryuchkov, Victor / Minenko, Victor / Chizhov, Konstantin / Chepurny, Mykola / Kukhta, Tatiana / Golovanov, Ivan / Bakhanova, Elena / Chumak, Vadim

    Radiation research

    2023  Volume 199, Issue 5, Page(s) 517–531

    Abstract: The present paper reviews the uncertainties and errors in complex dosimetry systems that were developed to estimate individual doses in different post-Chernobyl (Chornobyl) radiation epidemiology studies among the general population and the cleanup ... ...

    Abstract The present paper reviews the uncertainties and errors in complex dosimetry systems that were developed to estimate individual doses in different post-Chernobyl (Chornobyl) radiation epidemiology studies among the general population and the cleanup workers. These uncertainties and errors are associated with (i) instrumental radiation measurements of humans and environmental samples, (ii) inherent uncertainties arising from the stochastic random variability of the parameters used in exposure assessment and from a lack of knowledge about the true values of the parameters, and (iii) human factor uncertainties due to poor memory recall resulting in incomplete, inaccurate, or missing responses during personal interview with study subjects conducted long after exposure. Relative measurement errors of 131I thyroid activity associated with devices for measuring radioactivity in the thyroid reached up to 0.86 (coefficient of variation). The inherent uncertainty in estimates of individual doses varied between different studies and exposure pathways (GSD from 1.2 to 15 for model-based doses and from 1.3 to 5.1 for measurement-based doses). The human factor uncertainties can cause individual doses to be underestimated or overestimated by an average of 10 times for model-based doses and 2 times for measurement-based doses calculated for the general population and up to 3 times for doses calculated for cleanup workers. The sources of errors and uncertainties, especially the human factor uncertainties, should be carefully considered in dose assessment for radiation epidemiological studies, with particular attention to studies involving persons without instrumental radiation measurements.
    MeSH term(s) Humans ; Radiation Dosage ; Chernobyl Nuclear Accident ; Iodine Radioisotopes ; Uncertainty ; Risk Assessment/methods
    Chemical Substances Iodine-131 ; Iodine Radioisotopes
    Language English
    Publishing date 2023-03-07
    Publishing country United States
    Document type Review ; Journal Article ; Research Support, N.I.H., Intramural
    ZDB-ID 80322-4
    ISSN 1938-5404 ; 0033-7587
    ISSN (online) 1938-5404
    ISSN 0033-7587
    DOI 10.1667/RADE-22-00138.1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Recall of residential history and dietary habits during pregnancy and lactation in the distant past: reliability of questionnaire-based radiation doses for persons exposed in utero and early life.

    Drozdovitch, Vladimir / Kukhta, Tatiana / Minenko, Victor / Trofimik, Sergey / Veyalkin, Ilya / Yauseyenka, Vasilina / Mabuchi, Kiyohiko / Rozhko, Alexander

    Radiation and environmental biophysics

    2023  Volume 62, Issue 4, Page(s) 465–481

    Abstract: This study evaluates the reliability of information obtained by standardized questionnaires used in by personal interviews for estimation of radiation thyroid doses of 1065 individuals in the Belarusian cohort of individuals who were exposed in utero and ...

    Abstract This study evaluates the reliability of information obtained by standardized questionnaires used in by personal interviews for estimation of radiation thyroid doses of 1065 individuals in the Belarusian cohort of individuals who were exposed in utero and early life following the Chernobyl accident in April 1986. Data from two interviews conducted in 2012-2017 and in 2018-2022 with mothers, who were pregnant or gave birth shortly after the Chernobyl accident, were analysed. The most reliable answers dealt with various attributes related to residential history. In contrast, the reliability of answers regarding consumption rates of milk from privately owned cows or trade network was moderate, while the agreement in responses for consumption of milk products and leafy vegetables was fair. Information from the two interviews was used to calculate thyroid doses received by the cohort members. Specifically, 'model-based' thyroid doses due to
    MeSH term(s) Female ; Pregnancy ; Humans ; Animals ; Cattle ; Radiation Dosage ; Reproducibility of Results ; Chernobyl Nuclear Accident ; Iodine Radioisotopes ; Surveys and Questionnaires ; Lactation ; Feeding Behavior
    Chemical Substances Iodine-131 ; Iodine Radioisotopes
    Language English
    Publishing date 2023-08-04
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 124987-3
    ISSN 1432-2099 ; 0301-634X
    ISSN (online) 1432-2099
    ISSN 0301-634X
    DOI 10.1007/s00411-023-01040-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Evaluation of 131I transfer in the environment based on the available measurements made in Belarus after the Chernobyl accident

    Minenko, Victor / Kukhta, Tatiana / Trofimik, Sergey / Zhukova, Olga / Podgaiskaya, Marina / Viarenich, Kiryl / Bouville, André / Drozdovitch, Vladimir

    Journal of environmental radioactivity. 2022 May 24,

    2022  

    Abstract: This study evaluates the ¹³¹I transfer from ground deposition to the human thyroid gland after the Chernobyl accident using measurements of ¹³¹I concentrations in 1,252 soil, 124 grass, and 136 cow's milk samples as well as ¹³¹I thyroid activity measured ...

    Abstract This study evaluates the ¹³¹I transfer from ground deposition to the human thyroid gland after the Chernobyl accident using measurements of ¹³¹I concentrations in 1,252 soil, 124 grass, and 136 cow's milk samples as well as ¹³¹I thyroid activity measured in 3,100 individuals included in the Belarusian-American cohort. The following parameters of an ¹³¹I environmental transfer model used to calculate thyroid doses were evaluated in this study: (i) the interception factor of ¹³¹I by pasture grass, which was described by a purely empirical equation, (ii) the removal rate of ¹³¹I from pasture grass due to weathering and growth dilution, estimated to be 0.0676 d⁻¹ (half-life of 10.3 d), (iii) the removal rate of ¹³¹I from cow's milk, estimated to be 0.0686 d⁻¹ (half-life of 10.1 d), and (iv) the transfer coefficient of ¹³¹I from feed to cow's milk, arithmetic mean ± standard deviation of (6.7 ± 8.7)×10⁻³ d L⁻¹ (median = 4.0×10⁻³ d L⁻¹). The individual model-based and measurement-based ¹³¹I thyroid activities for the Belarusian-American cohort members were calculated using different starting points of ¹³¹I transfer in the chain ‘ground deposition’ → ‘vegetation’ → ‘cow's milk’ → ‘human thyroid’, i.e., the measured ¹³¹I concentrations in soil, grass, and cow's milk. De novo thyroid doses from ¹³¹I for the 3,100 cohort members were calculated in this study using measured ¹³¹I activity concentrations in soil, grass, and cow's milk and were compared with those estimated previously for the same individuals using model-based ¹³¹I activity concentrations. It was shown that the use of measured instead of model-based ¹³¹I concentrations, in general, did not improve the measurement-based thyroid dose estimates. This is likely to be because there was already a good generic data base for the parameters used in this assessment. This finding indicates that, although the measurements of environmental samples are essential to estimate the parameter values of the ¹³¹I transfer model, the individual measurements of ¹³¹I thyroid activity are the most valuable information for estimating individual thyroid doses.
    Keywords accidents ; databases ; equations ; grasses ; half life ; humans ; milk ; models ; pastures ; radioactivity ; soil ; standard deviation ; thyroid gland ; Belarus ; Ukraine
    Language English
    Dates of publication 2022-0524
    Publishing place Elsevier Ltd
    Document type Article
    Note Pre-press version
    ZDB-ID 1483112-0
    ISSN 1879-1700 ; 0265-931X
    ISSN (online) 1879-1700
    ISSN 0265-931X
    DOI 10.1016/j.jenvrad.2022.106928
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  5. Article ; Online: Evaluation of

    Minenko, Victor / Kukhta, Tatiana / Trofimik, Sergey / Zhukova, Olga / Podgaiskaya, Marina / Viarenich, Kiryl / Bouville, André / Drozdovitch, Vladimir

    Journal of environmental radioactivity

    2022  Volume 250, Page(s) 106928

    Abstract: This study evaluates ... ...

    Abstract This study evaluates the
    MeSH term(s) Animals ; Cattle ; Chernobyl Nuclear Accident ; Female ; Humans ; Iodine Radioisotopes ; Milk ; Poaceae ; Radiation Monitoring ; Republic of Belarus ; Soil
    Chemical Substances Iodine Radioisotopes ; Iodine-131 ; Soil
    Language English
    Publishing date 2022-05-31
    Publishing country England
    Document type Journal Article
    ZDB-ID 1483112-0
    ISSN 1879-1700 ; 0265-931X
    ISSN (online) 1879-1700
    ISSN 0265-931X
    DOI 10.1016/j.jenvrad.2022.106928
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  6. Article ; Online: Doses from external irradiation and ingestion of

    Drozdovitch, Vladimir / Kukhta, Tatiana / Trofimik, Sergey / Melo, Dunstana R / Viarenich, Kiryl / Podgaiskaya, Marina / Minenko, Victor

    Radiation and environmental biophysics

    2022  Volume 61, Issue 3, Page(s) 445–464

    Abstract: This study considers the exposure of the population of the most contaminated Gomel and Mogilev Oblasts in Belarus to prolonged sources of irradiation resulting from the Chernobyl accident. Dose reconstruction methods were developed and applied in this ... ...

    Abstract This study considers the exposure of the population of the most contaminated Gomel and Mogilev Oblasts in Belarus to prolonged sources of irradiation resulting from the Chernobyl accident. Dose reconstruction methods were developed and applied in this study to estimate the red bone-marrow doses (RBMs) from (i) external irradiation from gamma-emitting radionuclides deposited on the ground and (ii)
    MeSH term(s) Animals ; Cattle ; Cesium Radioisotopes ; Chernobyl Nuclear Accident ; Eating ; Female ; Radiation Dosage ; Republic of Belarus ; Strontium Radioisotopes
    Chemical Substances Cesium Radioisotopes ; Strontium Radioisotopes ; Cesium-137 (4T2E65IAR7) ; Strontium-90 (5TZZ77Z4ER) ; Cesium-134 (GWD7N0V43L)
    Language English
    Publishing date 2022-06-29
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Intramural ; Research Support, N.I.H., Extramural
    ZDB-ID 124987-3
    ISSN 1432-2099 ; 0301-634X
    ISSN (online) 1432-2099
    ISSN 0301-634X
    DOI 10.1007/s00411-022-00979-1
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  7. Article ; Online: Radiation Dose Does Not Affect the Predictive Value of Thyroid Biopsy for Diagnosing Papillary Thyroid Cancer in a Belarusian Cohort Exposed to Chernobyl Fallout.

    McConnell, Robert J / Kamysh, Olga / O'Kane, Patrick L / Greenebaum, Ellen / Rozhko, Alexander V / Yauseyenka, Vasilina V / Minenko, Victor F / Drozdovitch, Vladimir / Yarets, Yuliya / Kukhta, Tatiana / Mabuchi, Kiyohiko / Little, Mark P / Cahoon, Elizabeth K / Zablotska, Lydia B

    Acta cytologica

    2024  Volume 68, Issue 1, Page(s) 34–44

    Abstract: Introduction: The Chernobyl nuclear accident exposed residents of contaminated territories to substantial quantities of radioiodines and was followed by an increase in thyroid cancer, primarily papillary thyroid cancer (PTC), among exposed children and ... ...

    Abstract Introduction: The Chernobyl nuclear accident exposed residents of contaminated territories to substantial quantities of radioiodines and was followed by an increase in thyroid cancer, primarily papillary thyroid cancer (PTC), among exposed children and adolescents. Although thyroid biopsy is an essential component of screening programs following accidental exposure to radioiodines, it is unknown whether the predictive value of biopsy is affected by different levels of environmental exposure.
    Methods: A cohort of 11,732 Belarusians aged ≤18 years at the time of the Chernobyl accident with individual thyroid radiation dose estimates was screened at least once 11-22 years later. Paired cytologic conclusions and histopathologic diagnoses were possible for 258 thyroid nodules from 238 cohort members. Cytologic conclusions were divided into five reporting categories, with all follicular lesion aspirates combined into a single indeterminate category. Standard performance indicators, risk of malignancy (ROM), and odds ratios for a correct cytologic conclusion were calculated, both overall and according to quintile of thyroid radiation dose.
    Results: The arithmetic mean thyroid dose estimate for the study group was 1.73 Gy (range: 0.00-23.64 Gy). The final histopathologic diagnosis was cancer for 136 of 258 biopsies (52.7%; 135 papillary and 1 follicular). The overall ROM was 96.7% for cytologies definite for PTC, 83.7% for suspicious for PTC, 33.0% for indeterminate, 8.1% for benign, and 31.0% for non-diagnostic. The ROM showed little change according to level of radiation exposure. Overall, there was no association between thyroid radiation dose and the odds ratio for a correct cytologic conclusion (p = 0.24). When analyzed according to dose quintile, the odds ratio for a correct conclusion increased two-fold at 0.10-0.29 Gy compared to a dose of 0.00-0.09 Gy and decreased at doses of 0.3-24 Gy (p value for linear trend = 0.99).
    Conclusions: At radiation doses received by a cohort of young Belarusians exposed to radioiodines by the Chernobyl accident, the predictive value of thyroid biopsy for diagnosing PTC was not significantly affected by level of radiation exposure.
    MeSH term(s) Adolescent ; Child ; Humans ; Biopsy ; Carcinoma, Papillary/pathology ; Chernobyl Nuclear Accident ; Eastern European People ; Radiation Dosage ; Thyroid Cancer, Papillary/diagnosis ; Thyroid Neoplasms/diagnosis ; Thyroid Neoplasms/epidemiology ; Thyroid Neoplasms/pathology ; Adult
    Language English
    Publishing date 2024-01-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 80003-x
    ISSN 1938-2650 ; 0001-5547
    ISSN (online) 1938-2650
    ISSN 0001-5547
    DOI 10.1159/000536387
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  8. Article: Activity concentrations of 131I and other radionuclides in cow's milk in Belarus during the first month following the Chernobyl accident

    Minenko, Victor / Viarenich, Kiryl / Zhukova, Olga / Kukhta, Tatiana / Podgaiskaya, Marina / Khrutchinsky, Arkady / Kutsen, Semion / Bouville, André / Drozdovitch, Vladimir

    Journal of environmental radioactivity. 2020 Sept., v. 220-221

    2020  

    Abstract: The accident at the Chernobyl nuclear power plant (NPP) in Ukraine on April 26, 1986 led to a considerable release of radioactive material resulting in environmental contamination over vast areas of Belarus, Ukraine and western Russian Federation. The ... ...

    Abstract The accident at the Chernobyl nuclear power plant (NPP) in Ukraine on April 26, 1986 led to a considerable release of radioactive material resulting in environmental contamination over vast areas of Belarus, Ukraine and western Russian Federation. The major health effect of the Chernobyl accident was an increase in thyroid cancer incidence in people exposed as children and adolescents, so much attention was paid to the thyroid doses resulting from intakes of ¹³¹I. Because cow's milk consumption was the main source of ¹³¹I intake by people, it was important to measure the ¹³¹I activity concentrations in cow's milk to calculate, or to validate, the thyroid doses to the exposed population. Almost 11,000 measurements of total beta-activity in cow's milk were performed using a DP-100 device during the first month after the Chernobyl accident in the most contaminated regions of Belarus. Using an ecological model and calibration coefficients for the DP-100 device the activity concentration of ¹³¹I in cow's milk was derived as well as the activity concentrations of the other radiologically important radionuclides, namely ¹³⁴Cs, ¹³⁷Cs, ⁸⁹Sr and ⁹⁰Sr. The activity concentrations of other radionuclides, such as ⁹⁰Y, ¹³²Te, ¹³²I, ¹³³I, ¹³⁶Cs, ¹⁴⁰Ba, ¹⁴⁰La, ¹⁴¹Ce and ¹⁴⁴Ce, in cow's milk were also estimated and were shown to be of minor importance. The concentrations of ⁹⁵Zr, ⁹⁵Nb, ¹⁰³Ru and ¹⁰⁶Ru in cow's milk were negligible. The data obtained in this study were validated by comparing derived ¹³¹I and ¹³⁷Cs concentrations in cow's milk with gamma-spectrometry measurements performed in milk produced in the same location close to the same date. The results of this study were essential to assess and validate the radiation doses received by the subjects of epidemiological studies related to the health consequences of the Chernobyl accident.
    Keywords Russia ; accidents ; at-risk population ; cesium radioisotopes ; ecological models ; gamma spectrometry ; milk ; milk consumption ; nuclear power ; people ; pollution ; power plants ; radioactivity ; thyroid neoplasms ; Belarus ; Ukraine
    Language English
    Dates of publication 2020-09
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 1483112-0
    ISSN 1879-1700 ; 0265-931X
    ISSN (online) 1879-1700
    ISSN 0265-931X
    DOI 10.1016/j.jenvrad.2020.106264
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  9. Article ; Online: Activity concentrations of

    Minenko, Victor / Viarenich, Kiryl / Zhukova, Olga / Kukhta, Tatiana / Podgaiskaya, Marina / Khrutchinsky, Arkady / Kutsen, Semion / Bouville, André / Drozdovitch, Vladimir

    Journal of environmental radioactivity

    2020  Volume 220-221, Page(s) 106264

    Abstract: The accident at the Chernobyl nuclear power plant (NPP) in Ukraine on April 26, 1986 led to a considerable release of radioactive material resulting in environmental contamination over vast areas of Belarus, Ukraine and western Russian Federation. The ... ...

    Abstract The accident at the Chernobyl nuclear power plant (NPP) in Ukraine on April 26, 1986 led to a considerable release of radioactive material resulting in environmental contamination over vast areas of Belarus, Ukraine and western Russian Federation. The major health effect of the Chernobyl accident was an increase in thyroid cancer incidence in people exposed as children and adolescents, so much attention was paid to the thyroid doses resulting from intakes of
    MeSH term(s) Animals ; Chernobyl Nuclear Accident ; Humans ; Iodine Radioisotopes ; Milk ; Radiation Monitoring ; Republic of Belarus ; Ukraine
    Chemical Substances Iodine Radioisotopes
    Language English
    Publishing date 2020-06-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 1483112-0
    ISSN 1879-1700 ; 0265-931X
    ISSN (online) 1879-1700
    ISSN 0265-931X
    DOI 10.1016/j.jenvrad.2020.106264
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  10. Article ; Online: Thyroid dose estimates for the genome-wide association study of thyroid cancer in persons exposed in Belarus to 131I after the Chernobyl accident.

    Drozdovitch, Vladimir / Minenko, Victor / Kukhta, Tatiana / Viarenich, Kiryl / Trofimik, Sergey / Rogounovitch, Tatiana / Nakayama, Takafumi / Drozd, Valentina / Veyalkin, Ilya / Mitsutake, Norisato / Ostroumova, Evgenia / Saenko, Vladimir

    Journal of radiation research

    2021  

    Abstract: The Chernobyl accident on 26 April 1986 led to a sharp increase in thyroid cancer (TC) incidence in the individuals exposed to radiation in childhood. The major risk factor for TC was exposure to Iodine-131 (131I). Here, we estimated the thyroid doses ... ...

    Abstract The Chernobyl accident on 26 April 1986 led to a sharp increase in thyroid cancer (TC) incidence in the individuals exposed to radiation in childhood. The major risk factor for TC was exposure to Iodine-131 (131I). Here, we estimated the thyroid doses due to 131I intake for 2041 participants of the genome-wide association study of TC in Belarusian people exposed to radioactive fallout from the Chernobyl accident. The following parameter-values specially developed in this study were used to estimate individual thyroid doses: (i) scaling factors for adjustment of the model-based doses, (ii) age and gender diet to characterize 131I intake, and (iii) area-, age- and gender-specific S-values for the thyroid gland per 131I decay in the thyroid. The most reliable doses were calculated for 103 people with measured 131I thyroid activity (the arithmetic mean of 1.2 Gy, median 0.52 Gy), and 275 individuals with detailed residential history and dietary data (the arithmetic mean of 0.41 Gy, median 0.24 Gy). The arithmetic mean of thyroid doses among all study participants was 0.23 Gy (median 0.082 Gy); the highest individual dose was 9.0 Gy. Special attention was paid to the reliability and validity of the obtained estimates, in particular for the individuals without 131I thyroid activity measurements and individual data on residential history and diet, by comparing those with the doses from other post-Chernobyl epidemiological studies. Overall, the doses estimated in the current study were in reasonable agreement with previously reported thyroid doses. These doses will be used in the genome-wide association study of TC in people exposed in Belarus to 131I after the Chernobyl accident.
    Language English
    Publishing date 2021-09-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 603983-2
    ISSN 1349-9157 ; 0449-3060
    ISSN (online) 1349-9157
    ISSN 0449-3060
    DOI 10.1093/jrr/rrab082
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