A numerical study of microwave detection of a malignant tissue.

摘要

The physical basis for tumor detection with microwave imaging is the contrast in the dielectric properties of background and malignant tissues. In this research a numerical study using the Finite-Difference Time-Domain method has been carried out to analyze the use of microwave for lung cancer detection.; A computational model of a human torso slice was generated, and simulations were conducted using several frequencies for several sizes and locations of a lung cancerous tissue.; The tests were conducted by simulating a plane wave impinging on the torso slice, and the analysis of the scattered field at different frequencies showed that 3 GHz appears to be the optimum frequency for lung cancer detection.; A time series analysis is also presented as an approach to find the optimum time, during the incidence of a plane wave, at which the presence of the tumor is more discernible.