Gradient Coil Design and Realization for a Halbach-Based MRI System

Journal Article (2020)
Authors

Bart De Vos (Student TU Delft)

Patrick S. Fuchs (TU Delft - Signal Processing Systems)

Thomas O’Reilly (Leiden University Medical Center)

Andrew Webb (TU Delft - Signal Processing Systems)

Rob F. Remis (TU Delft - Signal Processing Systems)

Research Group
Signal Processing Systems
Copyright
© 2020 Bart De Vos, P.S. Fuchs, Thomas O'Reilly, A. Webb, R.F. Remis
To reference this document use:
https://doi.org/10.1109/TMAG.2019.2958561
More Info
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Publication Year
2020
Language
English
Copyright
© 2020 Bart De Vos, P.S. Fuchs, Thomas O'Reilly, A. Webb, R.F. Remis
Related content
Research Group
Signal Processing Systems
Issue number
3
Volume number
56
DOI:
https://doi.org/10.1109/TMAG.2019.2958561
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Abstract

In this article, we design and construct gradient coils for a Halbach permanent-magnet array magnetic resonance (MR) scanner. The target field method, which is widely applied for the case of axial static magnetic fields, has been developed for a transverse static magnetic field as produced by a Halbach permanent-magnet array. Using this method, current densities for three gradient directions are obtained and subsequently verified using a commercial magneto-static solver. Stream functions are used to turn the surface current densities into wire patterns for constructing the gradient coils. The measured fields are in good agreement with simulations and their prescribed target fields. 3-D images have been acquired using the constructed gradient coils with a very low degree of geometric distortion.

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