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Article: Time-harmonic impedance tomography using the T-matrix method

TitleTime-harmonic impedance tomography using the T-matrix method
Authors
Issue Date1994
Citation
Ieee Transactions On Medical Imaging, 1994, v. 13 n. 3, p. 508-516 How to Cite?
AbstractA time-harmonic formulation for the electrical impedance tomography (EIT) inverse problem accounting for electrodynamic effects is derived. This work abandons the standard electrostatic impedance model for a full-wave T-matrix model. The advantage of this method is an accurate physical model that includes finite frequency effects, such as diffusion phenomena, and electrode contact impedance effects. This model offers the potential for increased resolution and larger invertible contrast objects than other methods when used on experimental data, because it may represent a more realistic physical model. Also, an accurate gradient matrix is used in the Newton iterative method so the image reconstruction converges in a few iterations. These advantages are realized with no increase in the computational complexity of this algorithm, compared to the static finite element model. A calibration technique is suggested for measurement systems, to test the validity of a theoretical model that includes electrode contact impedance effects.
Persistent Identifierhttp://hdl.handle.net/10722/182547
ISSN
2015 Impact Factor: 3.756
2015 SCImago Journal Rankings: 1.941
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorOtto, Gregory Pen_US
dc.contributor.authorChew, Weng Choen_US
dc.date.accessioned2013-05-02T05:15:49Z-
dc.date.available2013-05-02T05:15:49Z-
dc.date.issued1994en_US
dc.identifier.citationIeee Transactions On Medical Imaging, 1994, v. 13 n. 3, p. 508-516en_US
dc.identifier.issn0278-0062en_US
dc.identifier.urihttp://hdl.handle.net/10722/182547-
dc.description.abstractA time-harmonic formulation for the electrical impedance tomography (EIT) inverse problem accounting for electrodynamic effects is derived. This work abandons the standard electrostatic impedance model for a full-wave T-matrix model. The advantage of this method is an accurate physical model that includes finite frequency effects, such as diffusion phenomena, and electrode contact impedance effects. This model offers the potential for increased resolution and larger invertible contrast objects than other methods when used on experimental data, because it may represent a more realistic physical model. Also, an accurate gradient matrix is used in the Newton iterative method so the image reconstruction converges in a few iterations. These advantages are realized with no increase in the computational complexity of this algorithm, compared to the static finite element model. A calibration technique is suggested for measurement systems, to test the validity of a theoretical model that includes electrode contact impedance effects.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Transactions on Medical Imagingen_US
dc.titleTime-harmonic impedance tomography using the T-matrix methoden_US
dc.typeArticleen_US
dc.identifier.emailChew, Weng Cho: wcchew@hku.hken_US
dc.identifier.authorityChew, Weng Cho=rp00656en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/42.310882en_US
dc.identifier.pmid18218526-
dc.identifier.scopuseid_2-s2.0-0028494973en_US
dc.identifier.volume13en_US
dc.identifier.issue3en_US
dc.identifier.spage508en_US
dc.identifier.epage516en_US
dc.identifier.isiWOS:A1994PF41400010-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridOtto, Gregory P=35446329800en_US
dc.identifier.scopusauthoridChew, Weng Cho=36014436300en_US

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