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A novel target-field method for finite-length magnetic resonance shim coils: I. Zonal shims

Citation

Forbes, LK and Crozier, S, A novel target-field method for finite-length magnetic resonance shim coils: I. Zonal shims, Journal of Physics D: Applied Physics, 34, (24) pp. 3447-3455. ISSN 0022-3727 (2001) [Refereed Article]

DOI: doi:10.1088/0022-3727/34/24/305

Abstract

This 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.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Condensed Matter Physics
Research Field:Electronic and Magnetic Properties of Condensed Matter; Superconductivity
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Mathematical Sciences
Author:Forbes, LK (Professor Larry Forbes)
ID Code:21931
Year Published:2001
Web of Science® Times Cited:43
Deposited By:Mathematics
Deposited On:2001-08-01
Last Modified:2011-08-03
Downloads:0

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