Globally optimal, minimum stored energy double-doughnut superconducting magnets

Tieng, Quang M., Vegh, Viktor and Brereton, Ian M. (2010) Globally optimal, minimum stored energy double-doughnut superconducting magnets. Magnetic Resonance in Medicine, 63 1: 262-267. doi:10.1002/mrm.22189

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Author Tieng, Quang M.
Vegh, Viktor
Brereton, Ian M.
Title Globally optimal, minimum stored energy double-doughnut superconducting magnets
Journal name Magnetic Resonance in Medicine   Check publisher's open access policy
ISSN 0740-3194
Publication date 2010-01-01
Year available 2009
Sub-type Article (original research)
DOI 10.1002/mrm.22189
Volume 63
Issue 1
Start page 262
End page 267
Total pages 6
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Language eng
Subject C1
090303 Biomedical Instrumentation
920203 Diagnostic Methods
Abstract The use of the minimum stored energy current density map-based methodology of designing closed-bore symmetric superconducting magnets was described recently. The technique is further developed to cater for the design of interventional-type MRI systems, and in particular open symmetric magnets of the double-doughnut configuration. This extends the work to multiple magnet domain configurations. The use of double-doughnut magnets in MRI scanners has previously been hindered by the ability to deliver strong magnetic fields over a sufficiently large volume appropriate for imaging, essentially limiting spatial resolution, signal-to-noise ratio, and field of view. The requirement of dedicated interventional space restricts the manner in which the coils can be arranged and placed. The minimum stored energy optimal coil arrangement ensures that the field strength is maximized over a specific region of imaging. The design method yields open, dual-domain magnets capable of delivering greater field strengths than those used prior to this work, and at the same time it provides an increase in the field-of-view volume. Simulation results are provided for 1-T double-doughnut magnets with at least a 50-cm 1-ppm (parts per million) field of view and 0.7-m gap between the two doughnuts. Copyright (c) 2009 Wiley-Liss, Inc.
Keyword Interventional MRI
Minimum stored energy
Global optimization
Superconducting magnet
Double-doughnut superconducting magnet
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 30 Nov 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Centre for Advanced Imaging Publications
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Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 4 times in Scopus Article | Citations
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Created: Fri, 23 Apr 2010, 00:32:11 EST by Sandrine Ducrot on behalf of Centre For Magnetic Resonance