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Published on: January 16, 2021
[Structure parameter selection of exiting coil in magnetic induction tomography]
1Institute of Biomedical and Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China. ke.l@live.cn
Summary
Magnetic induction tomography (MIT) imaging can be improved by optimizing the exciting coil. Larger coil radius and line diameter, with fewer turns, enhance magnetic flux density, detection range, and sensitivity.
Area of Science:
- Biomedical imaging
- Electromagnetism
- Finite element analysis
Context:
- Magnetic induction tomography (MIT) is an emerging imaging modality.
- The exciting coil design critically influences MIT system performance, affecting detection range and sensitivity.
- Optimizing the exciting coil's magnetic field distribution is key to enhancing eddy current induction.
Purpose:
- To investigate the impact of exciting coil parameters on magnetic field distribution in MIT.
- To establish a 3D homocentric sphere head model for finite element analysis.
- To analyze axial magnetic flux density and coil induced voltage by varying coil radius, turns, and line diameter.
Summary:
- A 3D finite element model of a four-layer homocentric sphere head was developed for MIT simulations.
- Transient finite element calculations were performed to assess different exciting coil configurations (radius, turns, line diameter).
- Results indicate that increasing coil radius and line diameter, while decreasing turns, significantly boosts magnetic flux density, detection range, and sensitivity.
Impact:
- Provides insights into optimizing exciting coil design for improved MIT performance.
- Demonstrates a method for enhancing magnetic field distribution and detection capabilities in MIT systems.
- Contributes to the advancement of non-invasive medical imaging techniques through electromagnetic modeling.
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