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Related Experiment Video

Updated: Jun 29, 2025

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
05:56

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

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A Wearable Open-Source electrical impedance tomography device.

Andrew Creegan1, Joshua Bradfield1, Samuel Richardson1

  • 1Auckland Bioengineering Institute, The University of Auckland, Auckland 1010, New Zealand.

Hardwarex
|March 29, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a low-cost, open-source electrical impedance tomography (EIT) system for lung monitoring. The wearable device offers accessible medical imaging for continuous monitoring and research applications.

Keywords:
EITElectrical impedance tomographyMedical imagingOpen sourceWearable

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Open-Source Hardware

Background:

  • Electrical impedance tomography (EIT) is a safe, non-invasive imaging technique.
  • High cost of commercial EIT devices limits adoption.
  • Limited availability of open-source EIT hardware designs.

Purpose of the Study:

  • Present a complete, low-cost, open-source EIT system.
  • Design a wearable EIT device for monitoring free-breathing subjects' lungs.
  • Enhance accessibility of EIT for research and clinical applications.

Main Methods:

  • Developed a low-cost, wearable EIT system.
  • Tested voltage measurement uncertainty.
  • Evaluated performance using a physiologically representative phantom test.

Main Results:

  • Achieved a voltage measurement uncertainty of -0.7% ± 0.36 mV.
  • Device performance in phantom tests was comparable to other published EIT devices.
  • Ensured compliance with industry-accepted safety standards for EIT.

Conclusions:

  • The open-source EIT system increases EIT accessibility for research.
  • Contributes to establishing consensus on EIT hardware testing methodologies.
  • Facilitates wider study and application of EIT technology.