Electrical impedance tomography: characterization of in-vitro performance

Author

Trudelle, Stephane ; Adler, Andy ; Guardo, Robert

Author_Institution

Inst. de Genie Biomed., Ecole Polytech., Montreal, Que., Canada

Volume

1

fYear

1995

fDate

20-25 Sep 1995

Firstpage

563

Abstract

Electrical impedance tomography uses surface electrical measurements to image changes in the conductivity distribution within a medium. Image interpretation, however, is difficult because of the dependance of the imaged contrast on radial position, height relative to the electrode plane and conductivity contrast. The authors propose a linear model which relates image amplitude and measurement error to target volumes and calibrate the parameters of this model for their system. The system has a mean error of 6.0 ml for volume measurement in physiological conditions

Keywords

calibration; electric impedance imaging; measurement errors; modelling; volume measurement; conductivity contrast; conductivity distribution changes imaging; electrical impedance tomography; electrode plane; image amplitude; imaged contrast; in-vitro performance characterization; medical diagnostic imaging; model parameters calibration; physiological conditions; radial position; surface electrical measurements; target volumes; Additive noise; Conductivity measurement; Electric variables measurement; Electrodes; Image reconstruction; Imaging phantoms; Impedance measurement; In vitro; Tomography; Volume measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.575251

Filename

575251