Modelos compartimentales para el cálculo de dosis interna

Abstract

Dosimetría de la Radiación is a subject to be coursed in the Master de Seguridad Industrial y Medioambiente. One of the main objectives of this subject is to provide the appropriate tools to the students for the estimation of external and internal dose. The course is organized with many practical sessions, in which the students use calculation tools to estimate the dose produced by diferent exposure pathways. One of the problems proposed is to determine the dose received in the thyroid by the inhalation of a certain amount of Iodine-131. In this case, the International Commission on Radiological Protection, has published two guides to estimate the transfer of radionuclides inside the human respiratory tract and the thyroid. Both estimations are obtained using biokinetic models, in which each organ is considered as a compartment and a mass balance is performed for each compartment. So the dose in a certain organ can be estimated by solving a system of differential equations with constants coefficients, what can be done using MatLab©.

Keywords

• Internal dose
• Respiratory tract
• Compartimental model