An iterative approach for applying multiple currents to a body using voltage sources in electrical impedance tomography

Author

Choi, Myoung H. ; Isaacson, David ; Saulnie, Gary J. ; Newell, Jonathan C.

Author_Institution

Div. of Electr. & Comp. Eng., Kangwon Nat. Univ., Chunchon, South Korea

Volume

4

fYear

2003

fDate

17-21 Sept. 2003

Firstpage

3114

Abstract

An approach for using voltage sources to produce a desired current pattern in an ACT-type EIT system is presented. An iterative adaptive algorithm generates the necessary voltage pattern that will result in the desired current pattern. The convergence of the algorithm is shown under the condition that the estimation error of the linear mapping from voltage to current is small. The simulation results are presented along with the implication of the convergence condition.

Keywords

bioelectric phenomena; electric impedance imaging; iterative methods; ACT; EIT; adaptive current tomography; convergence condition; electrical impedance tomography; iterative algorithm; iterative approach; linear mapping; multiple current; voltage source; voltage sources; Biomedical engineering; Biomedical measurements; Current measurement; Electrodes; Frequency measurement; Impedance; Iterative methods; Permittivity measurement; Tomography; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7789-3

Type

conf

DOI

10.1109/IEMBS.2003.1280801

Filename

1280801