Study and implementation of an electrical impedance tomograph

Authors

  • Leonardo Cechet Moro Universidade de Caxias do Sul
  • Rodrigo Wolff Porto Universidade de Caxias do Sul

Keywords:

tomography, impedance, EIDORS

Abstract

Electrical impedance tomography (EIT) is an image reconstruction technique by measuring electrical impedance. In this work, we seek to study the theoretical and practical foundations of the technique. Elaborate the design of the measurement channel with a single current source at a frequency of 50 kHz, for excitation of 16 to 32 electrodes. Develop and evaluate the steps of the system, from the generation of the voltage signal to control the current source, to the use of multiplexers for electrode excitation. Evaluate and test the channel by collecting measurements in a phantom with aqueous solution content. Obtain the data and use the EIDORS algorithm together with MATLAB to reconstruct the final image. Show the conceptual affinities between current systems and the developed system.

References

FRANCO, S. Design with operational amplifiers and analog integrated circuits. New York: McGraw-Hill, 2002.

GRAHAM, B. M. Enhancements in Electrical Impedance Tomography (EIT) Image. Ottawa: Univerity of Ottawa, 2007.

HENDERSON, R. P.; WEBSTER, J. P.; SWANSON, D. K. A thoracic electrical impedance. Annual Conference of Engineering in

Medicine and Biology, 1978.

HOLDER, D. S. Electrical Impedance Tomography: Methods, History and Applications. [S.l.]: Bristol: Institute of Physics Publishing,

HOVNANIAN, A. L. D. Papel da tomografia de impedância elétrica em pacientes portadores de hipertensão arterial pulmonar. USP. São

Paulo. 2013.

MALMIVUO, J.; PLONSEY, R. Principles and Applications of Bioelectric and Biomagnetic Fields. New York: Oxford University Press,

PORTO, R. W. Projeto e avaliação de um canal de medição de bioimpedâncias. UFRGS. Porto Alegre. 2009.

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Published

2016-05-04

How to Cite

Cechet Moro, L., & Wolff Porto, R. (2016). Study and implementation of an electrical impedance tomograph. Interdisciplinary Journal of Applied Science, 1(1), 6–9. Retrieved from https://sou.ucs.br/revistas/index.php/ricaucs/article/view/11

Issue

Vol. 1 No. 1 (2016): Interdisciplinary Journal of Applied Science

Section

Short Communications

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