The complete electrode model for imaging and electrode contact compensation in electrical impedance tomography.

The complete electrode model for imaging and electrode contact compensation in electrical impedance tomography. Research Abstract Details 

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The complete electrode model for imaging and electrode contact compensation in electrical impedance tomography. Abstract Text:

Gregory Boverman,Bong Seok Kim,David Isaacson,Jonathan C Newell,Gregory Boverman,Bong Seok Kim,David Isaacson,Jonathan C Newell,

Electrical Impedance Tomography (EIT) is an imaging modality which currently shows promise for the detection and characterization of breast cancer. A very significant problem in EIT imaging is the proper modeling of the interface between the body and the electrodes. We have found empirically that it is very difficult, in a clinical setting, to assure that all electrodes make satisfactory contact with the body. In addition, we have observed a capacitive effect at skin/electrode boundary that is spatially heterogeneous. To compensate for these problems, we have developed a hybrid nonlinear-linear reconstruction algorithm in which we first estimate electrode surface impedances, using a Newton-type iterative optimization procedure with an analytically computed Jacobian matrix. We subsequently make use of a linearized algorithm to perform a three-dimensional reconstruction of perturbations in both contact impedances and in the spatial distributions of conductivity and permittivity. Results show that, using this procedure, artifacts due to electrodes making poor contact can be greatly reduced.

The complete electrode model for imaging and electrode contact compensation in electrical impedance tomography. Publishing Authors By Initials

G Boverman,BS Kim,D Isaacson,JC Newell,G Boverman,BS Kim,D Isaacson,JC Newell,

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The complete electrode model for imaging and electrode contact compensation in electrical impedance tomography. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Conference proceedings : ... Annual International

VOLUME: 1

Page Numbers: 3462-5

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ISSN: 1557-170X

DAY: 16

MONTH: 11

YEAR: 2007

The complete electrode model for imaging and electrode contact compensation in electrical impedance tomography. Information

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LANGUAGE: eng

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Grant and Affiliation Information for The complete electrode model for imaging and electrode contact compensation in electrical impedance tomography.

AFFILIATION: Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180 USA. boverg@rpi.edu.

Country: United States

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MEDLINETA: Conf Proc IEEE Eng Med Biol So

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