Avaliação de doses envolvidas em radiocirurgias estereotáxicas utilizando simulação computacional

Abstract

Stereotactic radiosurgery is a follow-up within radiotherapy, where patients are subjected to high doses of radiation to eradicate or reduce diseases where conventional surgery is not indicated. The main objective of the study was to evaluate the radiation doses in the peripheral organs of a pregnant patient, using computational simulations using the MCNP6.2 code. The study is innovative, as it combines computer simulations with detailed analyzes of the dose distribution in different tissues and organs of the human body. The results obtained show considerable variability in the radiation dose between organs, depending on the treatment configuration in relation to the prescription dose and the characteristics of the irradiated tissue. Using the Monte Carlo method, for prescriptions of 15, 18 and 24 Gy, the fetal doses were 0.49 cGy, 0.59 cGy and 0.78 cGy respectively. These values are for the sum of all organs in the fetus