| Globally optimal, minimum stored energy, double-doughnut superconducting magnets. | |
| | |
MedLine Citation:
|
PMID: 19950210 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
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. |
| | |
Authors:
|
Quang M Tieng; Viktor Vegh; Ian M Brereton |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: 63 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2010 Jan |
Date Detail:
|
Created Date: 2009-12-28 Completed Date: 2010-03-10 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: United States |
Other Details:
|
Languages: eng Pagination: 262-7 Citation Subset: IM |
Copyright Information:
|
Copyright (c) 2009 Wiley-Liss, Inc. |
Affiliation:
|
Centre for Magnetic Resonance, The University of Queensland, Gehrmann Laboratories, Brisbane, Australia. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Computer-Aided Design* Electric Conductivity Energy Transfer Equipment Design Equipment Failure Analysis Image Enhancement / instrumentation* Magnetic Resonance Imaging / instrumentation* Magnetics / instrumentation* Transducers* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Transformation of pleomorphic adenoma to carcinoma ex pleomorphic adenoma of the parotid gland is in...
Next Document: High glucose increases expression of cyclooxygenase-2, increases oxidative stress and decreases the ...