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Magnetic Resonance Current Density Imaging (MR-CDI)
Saurav Z K Sajib1, Rosalind Sadleir2
1School of Biological Health System Engineering, Arizona State University, Tempe, AZ, USA. ssajib1@asu.edu.
Advances in Experimental Medicine and Biology
|October 28, 2022
Summary
Magnetic resonance current density imaging (MR-CDI) reconstructs electric current pathways. New numerical algorithms enable current density reconstruction using a single magnetic field component, improving MR-CDI usability.
Area of Science:
- Medical Imaging
- Electrical Engineering
- Physics
Background:
- Current density imaging (CDI) aims to map electric current pathways in conductive media.
- Magnetic resonance current density imaging (MR-CDI) utilizes MRI to measure induced magnetic flux density.
- Traditional MR-CDI requires object rotation to capture all magnetic field components, limiting practical application.
Purpose of the Study:
- To develop and discuss numerical algorithms for current density reconstruction.
- To overcome the limitations of object rotation in MR-CDI.
- To enable current density reconstruction using a single magnetic flux density component.
Main Methods:
- Investigated numerical algorithms for current density reconstruction.
- Focused on reconstructing current density (J) from a single magnetic flux density component (Bq).
- Utilized Ampere's law principles for reconstruction.
Main Results:
- Developed numerical algorithms to reconstruct current density distribution.
- Demonstrated the feasibility of reconstructing J from a single B-field component.
- Addressed limitations of traditional MR-CDI techniques.
Conclusions:
- Numerical algorithms can reconstruct current density distribution from limited magnetic field data.
- Reconstruction using a single magnetic flux density component enhances MR-CDI practicality.
- This approach offers a more user-friendly method for mapping electric currents non-invasively.
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