The ACE1 thoracic Electrical Impedance Tomography system for ventilation and perfusion

Area of Science:

• Biomedical Engineering
• Electrical Engineering
• Medical Imaging

Background:

• Electrical Impedance Tomography (EIT) images biological tissues' electrical properties.
• Clinical applications require knowledge of both tissue conductivity and permittivity.

Purpose of the Study:

• Present the hardware design for the Active Complex Electrode (ACE1) EIT system.
• Enable conductivity and permittivity image reconstruction using phasic voltage measurements.

Main Methods:

• Pairwise current injection using the ACE1 system.
• Alternating current injection on boundary electrodes.
• Single-ended voltage measurements for interior imaging and current calculation.

Main Results:

• The ACE1 system hardware design is presented.
• Phasic voltage measurements facilitate conductivity and permittivity reconstruction.
• The system allows for interior domain imaging and applied current calculation.

Conclusions:

• The ACE1 system provides a hardware design for advanced EIT.
• This system supports simultaneous conductivity and permittivity imaging.
• The developed system is suitable for clinical EIT applications.