Dosimetria em procedimentos de radiologia intervencionista cerebral empregando simuladores antropomórficos virtuais

Abstract

Due to the spread of technology in Interventional Radiology (IR), there is a daily growth of procedures that use uoroscopy equipment that uses emission of ionizing radiation to accompany the navigation of catheters and guides them in the lumen of the arteries and veins. Concomitantly with this advance in medical treatments that bring great bene ts to the patients, attention should be paid to the use of ionizing radiation. This risk is more accentuated in the medical team, who will perform these procedures throughout their professional life. Aiming to evaluate the doses involved in these procedures was performed a computational dosimetry study of radiation doses of radiation to which the professionals and patients are exposed during a cerebral angiography procedure. Also were compared the responses of two di erent virtual anthropomorphic simulator objects (mathematical and surface-based mesh - MASH3). The determination of radiation doses was made using the software of Monte Claro MCNP5, in the Instrumentation and Dosimetry (LInDa) of Federal University of Uberlândia. The results show a massive di erence between the objects mathematical virtual simulators and MASH3. Besides, that was possible to determine many conversion coe cients that could be used by the health professionals, aiming to estimate the radiation doses in organs and tissues.