A six-ring probe for monitoring conductivity changes

Area of Science:

• Electrical Impedance Tomography
• Biomedical Engineering
• Medical Device Development

Background:

• Monitoring immittance changes is crucial for various biomedical applications.
• Existing probes may lack specificity or require complex calibration.
• Understanding probe sensitivity is key to accurate measurements.

Purpose of the Study:

• To present the construction and characterization of a novel six-ring probe.
• To define and analyze the probe's spatial sensitivity for immittance monitoring.
• To assess the probe's uniqueness for conductivity change detection.

Main Methods:

• Development of a six-ring probe.
• Mathematical modeling using the finite element method (FEM).
• Experimental verification with a custom-built measuring system.
• Analysis of spatial sensitivity distributions for isotropic and anisotropic scenarios.

Main Results:

• The spatial sensitivity of the six-ring probe was successfully defined.
• Demonstrated the probe's uniqueness for monitoring conductivity changes.
• Presented spatial sensitivity distributions for both isotropic and anisotropic (diagonal) cases.
• FEM calculations were validated by experimental measurements.

Conclusions:

• The developed six-ring probe is effective for monitoring immittance and conductivity changes.
• The probe's spatial sensitivity analysis provides a foundation for its application in biomedical monitoring.
• Experimental validation confirms the theoretical models and probe's utility in in vivo scenarios.