A Modified Confocal Microwave Imaging Method for Detection of Breast Cancer

Abstract

Abstract: Algorithms are tentatively modified by adding refraction effect due to inhomogeneous media.Robust Capon beam-forming (RCB) algorithm is used for confocal procession.A frequently-used three-dimensional (3-D) hemispherical breast model is selected.Electrical parameters of breast tissues are modeled by a multi-pole Cole-Cole model in order to consider frequency-dependent property.Finite-difference time-domain (FDTD) method is used to simulate wave propagation in breast with illumination of an ultra-wide band (UWB) plane wave source.In a numerical application, two spherical 3 mm-radius tumors are added into breast to test performance of original CMI method and modified version.It shows that there is improvement on computational precision with slight increase in computational complexity.

Key words: breast cancer, confocal microwave imaging, robust Capon beam-forming, finite-difference time-domain method, Cole-Cole media

CLC Number:

O441.4

LIU Guangdong. A Modified Confocal Microwave Imaging Method for Detection of Breast Cancer[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2017, 34(1): 82-88.

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