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An open-source and easily replicable hardware for Electrical Impedance Tomography.

B Brazey1, Y Haddab1, N Zemiti1

  • 1LIRMM, Univ Montpellier, CNRS, Montpellier, France.

Hardwarex
|May 5, 2022
PubMed
Summary
This summary is machine-generated.

This study presents an affordable and replicable Electrical Impedance Tomography (EIT) hardware system. The accessible EIT device facilitates in-lab validation and research, making advanced imaging technology more widely available.

Keywords:
EITElectrical Impedance TomographyHardwareOpen-sourceReplicable

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Electrical Engineering

Background:

  • Electrical Impedance Tomography (EIT) is a valuable, non-invasive imaging technique for assessing tissue electrical properties.
  • Existing EIT systems are often costly or complex, hindering widespread in-lab application and accessibility.
  • Developing accessible and cost-effective EIT hardware is crucial for advancing biomedical research and education.

Purpose of the Study:

  • To present an efficient, easily replicable, and cost-effective Electrical Impedance Tomography (EIT) hardware system.
  • To make EIT technology more accessible for in-lab validation and proof-of-concept studies.
  • To share design schematics and fabrication details to facilitate understanding, replication, and improvement.

Main Methods:

  • Designed EIT hardware for operating frequencies between 1 kHz and 50 kHz, optimizing performance-to-cost ratio.
  • Utilized integrated circuits and a lock-in amplifier for a compact and efficient system design.
  • Shared circuit schematics, manufacturing files, and fabrication/usage procedures to ensure replicability.

Main Results:

  • The developed EIT hardware demonstrated a favorable performance-to-cost ratio.
  • Experimental validation confirmed the hardware's efficacy through comparison with simulations.
  • Successful reconstruction of an inclusion in biological tissues validated the system's imaging capabilities.

Conclusions:

  • The presented EIT hardware offers an accessible and cost-effective solution for in-lab research and validation.
  • The open sharing of design and fabrication details promotes wider adoption and further development of EIT technology.
  • This work lowers the barrier to entry for utilizing EIT in various biomedical applications.