Microwave pulses propagation inside of a 3D heart model

Abstract

The electrodynamical rigorous solution of Maxwell's equations related to the microwave pulse propagation inside a three-dimension heart model is presented in this article. The boundary problem was solved by using the singular integral equations' method. The carrier microwave frequency is 5 GHz. The modulating signal is rectangular video pulses with the on-ojf time ratio equal to 2. The model heart was limited by a non-coordinate shape surface and it consisted of two different size cavities. The heart cavities were schematic images of the left and right atriums and ventricles. In our calculations the cavities were filled with blood and the walls of the heart consisted of myocardium tissue. The microwave electric field distributions was analysed at two longitudinal cross-sections of the heart model. It is shown that the microwave electric field distribution inside of the heart model notably depends on the distance and direction from an antenna tip.