Estimación de la dosis absorbida en la piel durante la manipulación de fuentes radiactivas por medio del método Monte Carlo

Abstract

The aim of this research work is the development of a simulation that represents the handling of open radioactive sources, generally used in the handling of open radioactive sources, generally used in diagnostic or treatment processes in nuclear medicine diagnostic or treatment processes in nuclear medicine. The aim is to estimate the values of absorbed dose absorbed into the skin, which is a crucial issue in radiation protection. The simulation is performed by applying the Monte Carlo method, on the GAMOS platform established in the Geant4 toolkit and widely used for different research areas of medical physics. A geometry was elaborated, considering materials such as vials and syringes as well as the characteristics of the radioisotopes used such as 18F, 131I and 99mT, with their respective 99mT, with their respective activities being 15mCi for 18F, 100mCi for 131I and 10mCi for 99mT, obtaining dose histograms for each of them. obtaining dose-volume histograms, with values of approximately; i) 1.51E-18 Gy/evt in vials and 2.22E-18 Gy/evt in syringes, for 18F ii) 5.25E-19 in vials and 7.74E-19 these values represent the amount of dose absorbed by the skin during the handling process, and the discrepancy between them can be attributed to self-absorption within the source and to the density of the material. Due to the efficiency of the Monte Carlo method for the evaluation of processes involving radiation transport, it is suggested its application for the determination of doses in other organs of interest in different exposure processes.