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A novel target-field method for finite-length magnetic resonance shim coils: I. Zonal shims
journal contribution
posted on 2023-05-16, 12:52 authored by Lawrence ForbesLawrence Forbes, Crozier, SThis paper presents a new approach for the design of genuinely finite-length shim and gradient coils, intended for use in magnetic resonance imaging equipment. A cylindrical target region is located asymmetrically, at an arbitrary position within a coil of finite length. A desired target field is specified on the surface of that region, and a method is given that enables winding patterns on the surface of the coil to be designed, to produce the desired field at the inner target region. The method uses a minimization technique combined with regularization, to find the current density on the surface of the coil. The method is illustrated for linear, quadratic and cubic magnetic target fields located asymmetrically within a finite-length coil.
History
Publication title
Journal of Physics D: Applied PhysicsVolume
34Issue
24Pagination
3447-3455ISSN
0022-3727Department/School
School of Natural SciencesPublisher
IOP Publishing LtdPlace of publication
EnglandRepository Status
- Restricted