Mcnpx calculations of specific absorbed fractions in some organs of the human body due to application of ¹³³xe, ⁹⁹mtc and ⁸¹mkr radionuclides

Abstract

© The Author 2017. Published by Oxford University Press. All rights reserved. Monte Carlo simulations were performed to evaluate treatment doses with wide spread used radionuclides 133Xe, 99mTc and 81mKr. These different radionuclides are used in perfusion or ventilation examinations in nuclear medicine and as indicators for cardiovascular and pulmonary diseases. The objective of this work was to estimate the specific absorbed fractions in surrounding organs and tissues, when these radionuclides are incorporated in the lungs. For this purpose a voxel thorax model has been developed and compared with the ORNL phantom. All calculations and simulations were performed by means of the MCNP5/X code.