The Effect of Internal Electrodes on Electrical Impedance Tomography Sensitivity

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Electrical Engineering

Background:

• Electrical impedance tomography (EIT) typically uses surface electrodes for internal conductivity imaging.
• Limited research exists on the impact of internal electrodes in EIT.
• Internal electrodes may enhance sensitivity in deep thoracic regions.

Purpose of the Study:

• To investigate the sensitivity of EIT with various internal electrode configurations.
• To assess the potential of internal electrodes for improved imaging of the chest's central regions.

Main Methods:

• Simulations were performed to evaluate EIT sensitivity.
• Various internal electrode positions were analyzed.

Main Results:

• Internal electrode placements demonstrated increased sensitivity in central chest areas.
• The findings suggest improved imaging capabilities for inner lung and heart regions.

Conclusions:

• Internal electrodes represent a promising approach for enhancing EIT sensitivity.
• This technique could lead to better imaging of cardiac pulsatile activity and deep lung structures.