INDIVIDUAL THYROID DOSE ESTIMATION FOR A CASE-CONTROL STUDY OF CHERNOBYL-RELATED THYROID CANCER AMONG CHILDREN OF BELARUS—PART I: 131I, SHORT-LIVED RADIOIODINES (132I, 133I, 135I), AND SHORT-LIVED RADIOTELLURIUMS (131MTe AND 132Te)

Authors:
  • VKValeri Khrouch
    Valeri Khrouch
  • SSSergey Shinkarev
    Sergey Shinkarev
  • VDVladimir Drozdovitch
    Vladimir Drozdovitch
  • VMVictor Minenko
    Victor Minenko
  • ESElena Shemiakina
    Elena Shemiakina
  • ABAndré Bouville
    André Bouville
  • LALynn Anspaugh
    Lynn Anspaugh
  • PVPaul Voillequé
    Paul Voillequé
  • NLNickolas Luckyanov
    Nickolas Luckyanov
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Abstract
Large amounts of radioiodines were released into the atmosphere during the accident at the Chernobyl nuclear power plant on 26 April 1986. In order to investigate whether the thyroid cancers observed among children in Belarus could have been caused by radiation exposures from the Chernobyl accident, a team of Belarusian, Russian, and American scientists conducted a case-control study to compare cases and controls according to estimated thyroid dose. The primary purpose of this paper is to present detailed information on the estimated thyroid doses, due to intakes of 131I, that were used in the case-control study. The range of the 131I thyroid doses among the 107 cases and the 214 controls was found to extend from 0.00002 to 4.3 Gy, with medians of approximately 0.2 Gy for the cases and 0.07 Gy for the controls. In addition, the thyroid doses resulting from the intakes of short-lived radioiodines (132I, 133I, and 135I) and radiotelluriums (131mTe and 132Te) were estimated and compared to the doses from 131I. The ratios of the estimated thyroid doses from the short-lived radionuclides and from 131I for the cases and the controls range from 0.003 to 0.1, with median values of approximately 0.02 for both cases and controls.

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