Abstract
Here we present the electrodynamical analyses of microwave pulses propagation in a 3D anisotropic heart model for the flrst time. The electrodynamical rigorous solution of Maxwell's equations related to the microwave pulse propagation in the 3D heart model with anisotropic and isotropic media is presented here. The myocardium tissue media is an anisotropic lossy media and blood is an isotropic lossy media. The boundary problem was solved by using the singular integral equations' (SIE) method. Our solution, obtained by the SIE method, is electrodynamically rigorous. The false roots do not appear and the boundary conditions have to be satisfled only on the surfaces dividing difierent materials. The frequency of the carrier microwave is 2.45GHz. The modulating signals are triangular video pulses with the on-ofi time ratio equal to 5 and 100. The pulse durations were always equal to 20s. Microwave electric fleld distributions were analysed at three longitudinal cross-sections of the heart model. The distributions of electric fleld for the anisotropic and isotropic heart models are compared here. 1. INTRODUCTION A human heart may be under in∞uence of the microwave radiation for the medical examination of patients (1) or because of hazardous environment (2). The tissue of a heart, in the normal state possesses anisotropic properties; however, the anisotropy of heart tissue grows with some illnesses (3,4). Desiring to diagnose diseases of heart with the help of the microwave equipment it is necessary to investigate the process of microwave interaction with the anisotropic heart tissue. Research data of the anisotropic properties of heart tissue along and across of myocardium muscle flbers are given in (3). An electrodynamical analysis of the difiraction problem relating to scattering of the pulse- modulated microwave on the anisotropic heart model is given in this article. We solve this problem, using the SIE method (5). In our case the model of heart contains both isotropic and anisotropic area. The model that contains simultaneously anisotropic and isotropic media we will call an anisotropic model. The model that contains only isotropic media we will call an isotropic model.
Submitted Version (
Free)
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
