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A time-harmonic target-field method for designing shielded RF coils in MRI

journal contribution
posted on 2023-05-16, 17:12 authored by While, PT, Lawrence ForbesLawrence Forbes, Crozier, S
An inverse method for designing shielded, high-frequency RF coil systems is presented. A time-harmonic target-field approach is taken to find current densities on primary and shield RF coils. The correspondingly induced magnetic field is required to be homogeneous upon an asymmetrically located target region within the scanner and to be zero over an exterior target region. The finite length of the coil system is represented via a Fourier series expansion for the current density. Some new regularization penalty functions are considered in the solution process. A technique is given for creating coil winding patterns from complex, time-dependent current densities. To demonstrate the power of this design method, several coil windings are displayed for the primary and shield coils along with the corresponding fields. © 2005 IOP Publishing Ltd.

Funding

Australian Research Council

History

Publication title

Measurement Science and Technology

Volume

16

Issue

6

Pagination

1381-1393

ISSN

0957-0233

Department/School

School of Natural Sciences

Publisher

IOP Publishing Ltd

Place of publication

Bristol, England

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the mathematical sciences

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