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**Harvard**

Fhager, A., Gustafsson, M. och Nordbo, S. (2012) *Image Reconstruction in Microwave Tomography Using a Dielectric Debye Model*.

** BibTeX **

@article{

Fhager2012,

author={Fhager, Andreas and Gustafsson, Mats and Nordbo, Sven},

title={Image Reconstruction in Microwave Tomography Using a Dielectric Debye Model},

journal={IEEE Transactions on Biomedical Engineering },

issn={0018-9294},

volume={59},

issue={1},

pages={156 - 166},

abstract={In this paper, quantitative dielectric image reconstruction based on broadband microwave measurements is investigated. A time-domain-based algorithm is derived where Debye model parameters are reconstructed in order to take into account the strong dispersive behavior found in biological tissue. The algorithm is tested with experimental and numerical data in order to verify the algorithm and to investigate improvements in the reconstructed image resulting from the improved description of the dielectric properties of the tissue when using broadband data. The comparison is made in relation to the more commonly used conductivity model. For the evaluation, two examples were considered, the first was a lossy saline solution and the second was less lossy tap water. Both liquids are strongly dispersive and used as a background medium in the imaging examples. The results show that the Debye model algorithm is of most importance in the tap water for a bandwidth of more than 1.5 GHz. Also the saline solution exhibits a dispersive behavior but since the losses restrict the useful bandwidth, the Debye model is of less significance even if somewhat larger and stronger artifacts can be seen in the conductivity model reconstructions.},

year={2012},

keywords={Debye model; dispersion; finite-difference time-domain (FDTD) methods; microwave imaging; microwave measurements},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 153165

A1 Fhager, Andreas

A1 Gustafsson, Mats

A1 Nordbo, Sven

T1 Image Reconstruction in Microwave Tomography Using a Dielectric Debye Model

YR 2012

JF IEEE Transactions on Biomedical Engineering

SN 0018-9294

VO 59

IS 1

SP 156

OP 166

AB In this paper, quantitative dielectric image reconstruction based on broadband microwave measurements is investigated. A time-domain-based algorithm is derived where Debye model parameters are reconstructed in order to take into account the strong dispersive behavior found in biological tissue. The algorithm is tested with experimental and numerical data in order to verify the algorithm and to investigate improvements in the reconstructed image resulting from the improved description of the dielectric properties of the tissue when using broadband data. The comparison is made in relation to the more commonly used conductivity model. For the evaluation, two examples were considered, the first was a lossy saline solution and the second was less lossy tap water. Both liquids are strongly dispersive and used as a background medium in the imaging examples. The results show that the Debye model algorithm is of most importance in the tap water for a bandwidth of more than 1.5 GHz. Also the saline solution exhibits a dispersive behavior but since the losses restrict the useful bandwidth, the Debye model is of less significance even if somewhat larger and stronger artifacts can be seen in the conductivity model reconstructions.

LA eng

DO 10.1109/TBME.2011.2168606

LK http://dx.doi.org/10.1109/TBME.2011.2168606

LK http://publications.lib.chalmers.se/records/fulltext/153165/local_153165.pdf

OL 30