RESUMEN
Some companies in Korea have sold beds which contain a processed product containing monazite powder. Consumers may receive external exposure by radiation emitted by progeny radionuclides in uranium and thorium, and internal exposure through the breathing of radon progeny radionuclides produced in the decay chain. Thus, in this study, age specific dose conversion factors (mSv y-1 Bq-1) by external exposure and dose conversion factors by internal exposure (mSv y-1 per Bq m-3) were derived. Besides, a dose assessment program were developed to calculate dose by taking into account real conditions. And the age specific dose was evaluated using the radioactive concentration measured by the NSSC. As a results, external exposure was assessed to get effective doses in the range of 0.00086 to 0.0015 mSv y-1 by external exposure and a committed effective doses in the range of 1.3 to 12.26 mSv y-1 by internal exposure for all age groups.
Asunto(s)
Contaminantes Radiactivos del Aire/análisis , Contaminación del Aire Interior/análisis , Lechos/efectos adversos , Metales de Tierras Raras/análisis , Monitoreo de Radiación/métodos , Radón/análisis , Sueño/fisiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Contaminantes Radiactivos del Aire/efectos adversos , Contaminación del Aire Interior/efectos adversos , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Metales de Tierras Raras/efectos adversos , Persona de Mediana Edad , Fantasmas de Imagen , Dosis de Radiación , Exposición a la Radiación , Radón/efectos adversos , República de Corea , Sueño/efectos de la radiación , Torio/efectos adversos , Torio/análisis , Uranio/efectos adversos , Uranio/análisis , Adulto JovenRESUMEN
Empirical equations were proposed for the prediction of the ambient dose equivalent rates from patients administered with radioiodine for the treatment of thyroid cancers. Ambient dose equivalent rates were measured for 59 patients who received high-dose (131)I treatment after thyroid ablation at different times after the administration. An ion chamber was used to measure the dose equivalent rates at 1 m away from the body and on contact to the thyroid of the patients. The resulting equations for estimating dose equivalent rates at 1 m from the body and on contact to the thyroid are, respectively, dot H(1)(body)=0.236e(-0.0501t) (mSv h(-1) GBq(-1)) and dot H(c)(thy)=2.676e(-0.0443t) (mSv h(-1) GBq(-1)). The effective half-times in total body appeared to be 13.86 h.