Distinguishability in impedance imaging

Author

Cheney, Margaret ; Isaacson, David

Author_Institution

Dept. of Math. Sci., Rensselaer Polytech. Inst., Troy, NY, USA

Volume

39

Issue

8

fYear

1992

Firstpage

852

Lastpage

860

Abstract

Impedance imaging systems apply currents to the surface of a body, measure the induced voltages on the surface, and from this information reconstruct an approximation to the electrical conductivity in the interior. A detailed discussion of several ways to measure the ability of such a system to distinguish between two different conductivity distributions is given. The subtle differences between these related measures are discussed, and examples are provided to show that these different measures can give rise to different answers to various practical questions about system design.

Keywords

electric impedance imaging; body surface current application; conductivity distributions; electrical conductivity; impedance imaging distinguishability; induced voltages; medical diagnostic imaging; system design; Conductivity measurement; Current measurement; Electric variables measurement; Electrodes; Image reconstruction; Impedance measurement; Surface impedance; Surface reconstruction; Voltage; Voltmeters; Computer Simulation; Electric Conductivity; Electrodes; Evaluation Studies as Topic; Plethysmography, Impedance; Sensitivity and Specificity;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.148393

Filename

148393