Distinguishability analysis of an induced current EIT system using discrete coils.

Area of Science:

• Biomedical Engineering
• Electrical Engineering
• Medical Imaging

Background:

• Electrical Impedance Tomography (EIT) is a non-invasive imaging technique.
• Discrete coil-induced current EIT systems offer potential for improved spatial resolution.
• Challenges remain in optimizing current injection strategies for enhanced distinguishability.

Purpose of the Study:

• To analyze the distinguishability of a discrete coil-induced current EIT system.
• To develop an optimization procedure for maximizing system distinguishability.
• To investigate the focusing of current density within the field of view.

Main Methods:

• Analysis of the forward problem solution for the EIT system.
• Development of an optimization procedure using the forward problem solution.
• Determination of optimum coil currents under constraints of peak current and total power.

Main Results:

• The methodology for solving the forward problem is explained.
• An optimization procedure is developed to maximize distinguishability.
• Coil currents can be optimized to focus current density in desired locations for concentric inhomogeneity problems.
• Optimum coil currents are determined considering practical constraints.

Conclusions:

• The study demonstrates the effectiveness of optimized coil currents in enhancing EIT system distinguishability.
• The developed optimization procedure allows for targeted current density focusing.
• The findings provide a foundation for improving EIT system performance in medical imaging applications.