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

Citation

While, PT and Forbes, LK and Crozier, S, A time-harmonic target-field method for designing unshielded RF coils in MRI, Measurement Science and Technology, 16, (4) pp. 997-1006. ISSN 0957-0233 (2005) [Refereed Article]

DOI: doi:10.1088/0957-0233/16/4/012

Abstract

Time-harmonic methods are required in the accurate design of RF coils as operating frequency increases. This paper presents such a method to find a current density solution on the coil that will induce some desired magnetic field upon an asymmetrically located target region within. This inverse method appropriately considers the geometry of the coil via a Fourier series expansion, and incorporates some new regularization penalty functions in the solution process. A new technique is introduced by which the complex, time-dependent current density solution is approximated by a static coil winding pattern. Several winding pattern solutions are given, with more complex winding patterns corresponding to more desirable induced magnetic fields. © 2005 IOP Publishing Ltd.

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:While, PT (Dr Peter While)
Author:Forbes, LK (Professor Larry Forbes)
ID Code:32386
Year Published:2005
Funding Support:Australian Research Council (DP0343350)
Web of Science® Times Cited:9
Deposited By:Mathematics
Deposited On:2005-08-01
Last Modified:2006-03-28
Downloads:0

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