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Related Experiment Video

Updated: Jul 23, 2025

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

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

Published on: September 6, 2024

ACT5 Electrical Impedance Tomography System.

Omid Rajabi Shishvan, Ahmed Abdelwahab, Nilton Barbosa da Rosa

IEEE Transactions on Bio-Medical Engineering

|July 17, 2023

Summary

This summary is machine-generated.

The new Adaptive Current Tomograph 5 (ACT5) system offers real-time Electrical Impedance Tomography (EIT) imaging with high flexibility. This portable EIT system provides high-quality conductivity and susceptivity images for human subject research.

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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

Published on: February 8, 2022

Area of Science:

Biomedical Engineering
Medical Imaging
Electrical Engineering

Background:

Electrical Impedance Tomography (EIT) is a non-invasive imaging technique.
Real-time imaging and flexible current application are crucial for advanced EIT applications.

Purpose of the Study:

Introduce the Adaptive Current Tomograph 5 (ACT5), a novel 32-electrode EIT system.
Detail the system's hardware and software design for advanced EIT imaging.

Main Methods:

Developed a 32-electrode applied-current EIT system (ACT5).
Implemented adaptive current sources with programmable patterns and frequencies (5 kHz–500 kHz).
Integrated real-time ECG monitoring and safety features.

Main Results:

Achieved real-time conductivity and susceptivity imaging at 27 frames per second.
Demonstrated system performance with tank phantoms and a human subject.
Acquired real-time images of pulsatile perfusion and ECG traces.

Conclusions:

ACT5 offers portability, a high signal-to-noise ratio, and flexible current control.
The system facilitates obtaining useful human subject data with clinical ease.
ACT5 advances the capabilities of real-time EIT imaging.