Numerical technique for transmission analysis of electromagnetic waves in high-loss media used for microwave imaging of biological functions

This study is concerned with a technique used for developing a new modality of microwave imaging aiming at noninvasive imaging of biological functions. The paper describes a new technique for transmission analysis of electromagnetic waves in high-loss media. For this purpose, we have combined the equivalent multi-transmission line method in which ion conduction is taken into consideration with the moment method. As a typical problem, this technique has been applied to validate the sandwiched dipole antennas used in microwave imaging by Chirp Pulse Microwave Computed Tomography (CP-MCT). The measurement is done in saline solution to minimize the scattering effects at the body surface. Characteristics of sandwiched dipole antennas developed by trial and error-based learning have been validated almost perfectly by the developed technique. In conclusion, it has been proved that the developed technique is successfully used to find ideal parameters of the antennas which improve the quality in images of CP-MCT.