Coil geometry effects on scanning single-coil magnetic induction tomography

Area of Science:

• Biomedical Engineering
• Electrical Engineering
• Medical Imaging

Background:

• Magnetic induction tomography (MIT) is an imaging technique.
• The standard single coil design for MIT has limitations.
• A 'blind spot' along the coil axis can weaken eddy current generation, impacting performance.

Purpose of the Study:

• To evaluate alternative coil designs for single coil magnetic induction tomography.
• To investigate the impact of coil blind spot size on imaging performance.
• To identify coil designs that offer improved image reconstruction.

Main Methods:

• Seven alternative coil designs were fabricated and tested.
• Laboratory phantoms with feature dimensions comparable to blind spot sizes were used.
• High conductivity contrasts were employed to challenge eddy current generation.

Main Results:

• Coil designs with smaller blind spots showed markedly better image reconstruction performance.
• The size of the coil's blind spot was a critical factor in performance.
• Higher conductivity contrasts exacerbated the effects of blind spots.

Conclusions:

• Reducing the blind spot size is crucial for improving magnetic induction tomography coil performance.
• Further research into signal-to-noise ratio improvements may refine these findings.
• Optimized coil designs hold promise for enhanced MIT applications.