DYNAMICS OF 131I ACCUMULATION AND FORMATION OF DOSES IN ORGANS AND TISSUES OF THE LABORATORY RATS BY PROLONGED ORAL INTAKE.

The kinetics of 131I and dose formation in organs and tissues of laboratory Wistar rats with prolonged exposure to was investigated. The methodical approach to the identification of variables that allow to describe the function of uptake in the thyroid (TG) was proposed. Some aspects of the absorbed doses formation, taking into account direct exposure radionuclides entering the organ or tissue, and an additional γ-radiation radionuclides in critical organs: TG and hypodermis was discloses. It is shown that the dose of additional irradiation of certain organs, directly adjacent to the TG, can by 1 - 2 orders of magnitude greater than the dose from internal radiation and significantly affect the functioning of the hematopoietic and immune systems. [ABSTRACT FROM AUTHOR]