3-D gradient coil design-initial theoretical framework

While, Peter T, Forbes, Larry K and Crozier, Stuart (2009) 3-D gradient coil design-initial theoretical framework. IEEE Transactions on Biomedical Engineering, 56 4: 1169-1183. doi:10.1109/TBME.2009.2013199


Author While, Peter T
Forbes, Larry K
Crozier, Stuart
Title 3-D gradient coil design-initial theoretical framework
Journal name IEEE Transactions on Biomedical Engineering   Check publisher's open access policy
ISSN 0018-9294
Publication date 2009-04-01
Year available 2009
Sub-type Article (original research)
DOI 10.1109/TBME.2009.2013199
Open Access Status Not yet assessed
Volume 56
Issue 4
Start page 1169
End page 1183
Total pages 15
Editor Jose C. Principe
Place of publication USA
Publisher IEEE
Language eng
Subject 090303 Biomedical Instrumentation
090399 Biomedical Engineering not elsewhere classified
861502 Medical Instruments
970109 Expanding Knowledge in Engineering
C1
Abstract An analytic inverse method is presented for the theoretical design of 3-D transverse gradient coils. Existing gradient coil design methods require the basic geometry of the coil to be predetermined before optimization. Typically, coil windings are constrained to lie on cylindrical, planar, spherical, or conical surfaces. In this paper, a fully 3-D region in the solution space is explored and the precise geometry of the gradient coils is obtained as part of the optimization process. Primary interest lies in minimizing the field error between induced and target gradient fields within a spherical target region. This is achieved using regularization, in which the field error is minimized along with the total coil power, to obtain a 3-D current density solution within the coil volume. A novel priority streamline technique is used to create 3-D coil windings that approximate this current density, and a secondary optimization is performed to obtain appropriate coil currents. The 3-D coil windings display an interesting general geometric form involving sets of closed loops plus spiral-type coils, and a number of examples are presented and discussed. The corresponding induced magnetic field is found to be highly linear within the region of interest, and a shielding constraint may be implemented to minimize the field outside the coil volume.
Keyword Coil design
TARGET-FIELD METHOD
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Information Technology and Electrical Engineering Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 03 Sep 2009, 18:10:00 EST by Mr Andrew Martlew on behalf of School of Information Technol and Elec Engineering