Short Lived Isotopes of Iodine (131-135 I) in Case of Ration Accident: Features of Accumulation and Distribution of Absorbed Doses and Biological Effects in Thyroid
Title: Short Lived Isotopes of Iodine (131-135 I) in Case of Ration Accident: Features of Accumulation and Distribution of Absorbed Doses and Biological Effects in Thyroid
Author: Lyaginskaja A.M., Osipov V.A.
Reference: Journal «МЕДИЦИНСКАЯ РАДИОЛОГИЯ И РАДИАЦИОННАЯ БЕЗОПАСНОСТЬ» vol.50 No.2 2005
ISSN: 0025-8334
Keywords: IODINE ISOTOPES (132- 135I ), RADIATION ACCIDENT, INHALATION, THYROID, ABSORBED DOZE, IODINE DEFICIENCY
Abstract: Purpose: The assessment of peculiarities of accumulation and distribution of 132- 135I absorbed doses in thyroid and their biological danger in case of radiation accident. Results: In case of radiation accident, the initial radiation danger is determined by iodine isotopes of 132- 135I inhaled as agaseous aerosol mixture. Inhalation intake of iodine radioisotopes is most dangerous for newborn and children below 1 year age, because of the differences in the breath rate and thyroid weight. High energy beta radiation emitted by 132- 135I isotopes in thyroid is absorbed more homogeneously if compared to 131I beta radiation, which results to the irradiation of both follicles and parenchyma tissue, blood vessels and neural terminals and causes the development of both stochastic and deterministic effects. The biological efficiency of inhaled short lived 132- 135I isotopes is approximately 10 times higher, than 131I efficiency and is comparable or even higher than the biological efficiency of the external gamma radiation.
URL: http://elibrary.ru/item.asp?id=9131592
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