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Proceedings Paper

Multiple simultaneous excitation electrical impedance tomography using low cross-correlated signals
Author(s): Orkun Hasekioglu; M. Kemal Kiymik
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Paper Abstract

Electrical Impedance Technology (EIT) is a non-destructive technique to image the electrical impedance cross-sections of a given phantom. Conventionally in transverse plane impedance imaging electrical signals (usually sinusoidal) are sequentially applied to the electrodes located circularly around the phantom at uniform angles. For each excitation the signal amplitudes and phases are measured at the other remaining electrodes. These measurements are then used to compute an impedance cross-section map of the phantom. This generic technique is not sufficiently fast to map rapidly varying impedance cross-sections, since all the electrodes need to be excited sequentially while amplitude and phase measurements are made at each one of the other electrodes. To circumvent this problem, it is suggested to use multiple simultaneous excitations with low cross-correlation signals instead of single sequential excitations applied one at a time. As a result the data acquisition time can be reduced by a factor of about the number of electrodes.

Paper Details

Date Published: 1 November 1992
PDF: 8 pages
Proc. SPIE 1818, Visual Communications and Image Processing '92, (1 November 1992); doi: 10.1117/12.131396
Show Author Affiliations
Orkun Hasekioglu, Advanced Innovative Technologies, Inc. (United States)
M. Kemal Kiymik, Erciyes Univ. (Turkey) (United States)

Published in SPIE Proceedings Vol. 1818:
Visual Communications and Image Processing '92
Petros Maragos, Editor(s)

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