Calculations of individual doses for Techa River Cohort members exposed to atmospheric radioiodine from Mayak releases.

Time-dependent thyroid doses were reconstructed for over 29,000 Techa River Cohort members living near the Mayak production facilities from I released to the atmosphere for all relevant exposure pathways. The calculational approach uses four general steps: 1) construct estimates of releases of I to the air from production facilities; 2) model the transport of I in the air and subsequent deposition on the ground and vegetation; 3) model the accumulation of I in environmental media; and 4) calculate individualized doses. The dose calculations are implemented in a Monte Carlo framework that produces best estimates and confidence intervals of dose time-histories.