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Advanced Fast 3-D Electromagnetic Solver for Microwave Tomography Imaging.

Authors
  • Simonov, Nikolai
  • Kim, Bo-Ra
  • Lee, Kwang-Jae
  • Jeon, Soon-Ik
  • Son, Seong-Ho
Type
Published Article
Journal
IEEE Transactions on Medical Imaging
Publisher
Institute of Electrical and Electronics Engineers
Publication Date
Oct 01, 2017
Volume
36
Issue
10
Pages
2160–2170
Identifiers
DOI: 10.1109/TMI.2017.2712800
PMID: 28600242
Source
Medline
License
Unknown

Abstract

This paper describes a fast-forward electromagnetic solver (FFS) for the image reconstruction algorithm of our microwave tomography system. Our apparatus is a preclinical prototype of a biomedical imaging system, designed for the purpose of early breast cancer detection. It operates in the 3-6-GHz frequency band using a circular array of probe antennas immersed in a matching liquid; it produces image reconstructions of the permittivity and conductivity profiles of the breast under examination. Our reconstruction algorithm solves the electromagnetic (EM) inverse problem and takes into account the real EM properties of the probe antenna array as well as the influence of the patient's body and that of the upper metal screen sheet. This FFS algorithm is much faster than conventional EM simulation solvers. In comparison, in the same PC, the CST solver takes ~45 min, while the FFS takes ~1 s of effective simulation time for the same EM model of a numerical breast phantom.

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