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International Journal of Antennas and Propagation
Volume 2008 (2008), Article ID 254830, 8 pages
http://dx.doi.org/10.1155/2008/254830
Research Article

Microwave Tomography for Brain Imaging: Feasibility Assessment for Stroke Detection

School of Medicine, Keele University, ISTM, Hartshill Campus, Thornburrow Drive, Hartshill, Stoke-on-Trent ST4 7QB, UK

Received 28 September 2007; Accepted 12 March 2008

Academic Editor: Stuart Crozier

Copyright © 2008 Serguei Y. Semenov and Douglas R. Corfield. 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

There is a need for a medical imaging technology, that supplements current clinical brain imaging techniques, for the near-patient and mobile assessment of cerebral vascular disease. Microwave tomography (MWT) is a novel imaging modality that has this potential. The aim of the study was to assess the feasibility, and potential performance characteristics, of MWT for brain imaging with particular focus on stroke detection. The study was conducted using MWT computer simulations and 2D head model with stroke. A nonlinear Newton reconstruction approach was used. The MWT imaging of deep brain tissues presents a significant challenge, as the brain is an object of interest that is located inside a high dielectric contrast shield, comprising the skull and CSF. However, high performance, nonlinear MWT inversion methods produced biologically meaningful images of the brain including images of stroke. It is suggested that multifrequency MWT has the potential to significantly improve imaging results.