Uncertainties in Radiation Doses for a Case-control Study of Thyroid Cancer among Persons Exposed in Childhood to 131 I from Chernobyl Fallout.
Health Phys
; 119(2): 222-235, 2020 08.
Article
em En
| MEDLINE
| ID: mdl-33290004
ABSTRACT
Uncertainties in thyroid doses due to I intake were evaluated for 2,239 subjects in a case-control study of thyroid cancer following exposure to Chernobyl fallout during childhood and adolescence carried out in contaminated regions of Belarus and Russia. Using new methodological developments that became available recently, a Monte Carlo simulation procedure was applied to calculate 1,000 alternative vectors of thyroid doses due to I intake for the study population of 2,239 subjects accounting for sources of shared and unshared errors. An overall arithmetic mean of the stochastic thyroid doses in the study was estimated to be 0.43 Gy and median dose of 0.16 Gy. The arithmetic mean and median of deterministic doses estimated previously for 1,615 of 2,239 study subjects were 0.48 Gy and 0.20 Gy, respectively. The geometric standard deviation of individual stochastic doses varied from 1.59 to 3.61 with an arithmetic mean of 1.94 and a geometric mean of 1.89 over all subjects of the study. These multiple sets of thyroid doses were used to update radiation-related thyroid cancer risks in the study population exposed to I after the Chernobyl accident.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Glândula Tireoide
/
Neoplasias da Glândula Tireoide
/
Radioisótopos do Iodo
/
Neoplasias Induzidas por Radiação
Tipo de estudo:
Etiology_studies
/
Health_economic_evaluation
/
Observational_studies
/
Risk_factors_studies
Limite:
Adolescent
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Child
/
Child, preschool
/
Humans
/
Infant
/
Newborn
País/Região como assunto:
Asia
/
Europa
Idioma:
En
Revista:
Health Phys
Ano de publicação:
2020
Tipo de documento:
Article