A fast electromagnetic solver for microwave medical imaging

This paper describes a fast electromagnetic solver that allows to accelerate significantly the microwave imaging program, which produce reconstruction of permittivity and conductivity distribution of the breast under examination for purpose of early concern detection. The reconstruction algorithm is based on the solution of inverse electromagnetic scattering problem using iteration method, which applies to solve a number of relative forward electromagnetic problems. The presented fast solver is developed for a precision microwave tomography that contain the circular array of probe antennas and operates in 3-6 GHz frequency band.

I. Introduction

Breast cancer is a significant health problem worldwide [1] and it is important that early cancer detection greatly increases the chances for a successful treatment. Microwave imaging has the potential to provide effective tumor detection owing to a significant contrast in the dielectric properties of normal and malignant breast tissues at microwave frequencies [2].