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International Journal of Biomedical Imaging
Volume 2012, Article ID 582037, 15 pages
http://dx.doi.org/10.1155/2012/582037
Research Article

On the Forward Scattering of Microwave Breast Imaging

1Biomedical Electromagnetics Research Group, Division of Signal Processing and Biomedical Engineering, Department of Signals and Systems, Chalmers University of Technology, S 412 96 Gothenburg, Sweden
2Medtech West, Sahlgrenska University Hospital, SE413-45 Gothenburg, Sweden

Received 2 October 2011; Accepted 23 December 2011

Academic Editor: Elise Fear

Copyright © 2012 Hoi-Shun Lui et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Microwave imaging for breast cancer detection has been of significant interest for the last two decades. Recent studies focus on solving the imaging problem using an inverse scattering approach. Efforts have mainly been focused on the development of the inverse scattering algorithms, experimental setup, antenna design and clinical trials. However, the success of microwave breast imaging also heavily relies on the quality of the forward data such that the tumor inside the breast volume is well illuminated. In this work, a numerical study of the forward scattering data is conducted. The scattering behavior of simple breast models under different polarization states and aspect angles of illumination are considered. Numerical results have demonstrated that better data contrast could be obtained when the breast volume is illuminated using cross-polarized components in linear polarization basis or the copolarized components in the circular polarization basis.