Microwave Pulse Propagation inside a 3D Heart Model

  • L. Nickelson Semiconductor Physics Institute
  • S. Ašmontas Semiconductor Physics Institute
  • R. Martavičius Vilnius Gediminas Technical University
  • V. Engelson Linköping university


The electrodynamically rigorous solution of Maxwell’s equations related to the microwave pulse propagation inside a threedimension heart model is presented in this article. The boundary problem was solved by using the singular integral equations’ method. The carrier microwave frequency is 10 GHz. The modulating signals are triangular and rectangular video pulses with the on-off time ratio equal to 3 and 30 for each of pulses. 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 three longitudinal cross-sections of the heart model. It is shown that the microwave electric field distribution inside of the heart model most notably depends on the on-off time ratio and form of modulating video pulses. Ill. 5, bibl. 18 (in English; summaries in English, Russian and Lithuanian).