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The Stochastic Design of Force-Minimised Compact Magnets for High-Field Magnetic Resonance Imaging Applications
Citation
Crozier, S and Snape-Jenkinson, CJ and Forbes, LK, The Stochastic Design of Force-Minimised Compact Magnets for High-Field Magnetic Resonance Imaging Applications, IEEE Transactions on Applied Superconductivity, 11, (2) pp. 4014-4022. ISSN 1051-8223 (2001) [Refereed Article]
Abstract
New designs for force-minimized compact high-field clinical MRI magnets are described. The design method is a modified simulated annealing (SA) procedure which includes Maxwell forces in the error function to be minimized. This permits an automated force reduction in the magnet designs while controlling the overall dimensions of the system. As SA optimization requires many iterations to achieve a final design, it is important that each iteration in the procedure is rapid. We have therefore developed a rapid force calculation algorithm. Novel designs for short 3-and 4-T clinical MRI systems are presented in which force reduction has been invoked. The final designs provide large homogeneous regions and reduced stray fields in remarkable short magnets. A shielded 4-T design that is approximately 30% shorter than current designs is presented. This novel magnet generates a full 50-cm diameter homogeneous region.
Item Details
Item Type: | Refereed Article |
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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 |
UTAS Author: | Forbes, LK (Professor Larry Forbes) |
ID Code: | 21663 |
Year Published: | 2001 |
Web of Science® Times Cited: | 6 |
Deposited By: | Mathematics |
Deposited On: | 2001-08-01 |
Last Modified: | 2002-07-29 |
Downloads: | 0 |
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