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Development of an electrical impedance tomograph

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4 Author(s)
Montellano, C. ; Electr. Eng. Dept., CINVESTAV-IPN, Mexico City, Mexico ; Garay, E.C.L. ; Rodriguez, S. ; Rogeli, P.

This article describes the design of an electrical impedance tomograph (EIT), with the aim to provide a tool to detect morphological changes in tissues. This design consists of an array of 16 electrodes distributed on a ring way. The 4 points technique is used to record the amplitude of the electrical impedance. The array was placed around of a tank filled with a saline solution and objects of different sizes and shapes as test material. The operation of the system is controlled by a program developed on LabVIEW, the impedance data recorded are sent to a MATLAB toolbox called EIDORS to be processing. The final result is a reconstructed image in witch objects larger than 1 cm of contrasting impedance can be recognized.

Published in:

Electrical Engineering Computing Science and Automatic Control (CCE), 2011 8th International Conference on

Date of Conference:

26-28 Oct. 2011

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