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A time-harmonic target-field method for designing shielded RF coils in MRI
Citation
While, PT and Forbes, LK and Crozier, S, A time-harmonic target-field method for designing shielded RF coils in MRI, Measurement Science and Technology, 16, (6) pp. 1381-1393. ISSN 0957-0233 (2005) [Refereed Article]
DOI: doi:10.1088/0957-0233/16/6/021
Abstract
An inverse method for designing shielded, high-frequency RF coil systems is presented. A time-harmonic target-field approach is taken to find current densities on primary and shield RF coils. The correspondingly induced magnetic field is required to be homogeneous upon an asymmetrically located target region within the scanner and to be zero over an exterior target region. The finite length of the coil system is represented via a Fourier series expansion for the current density. Some new regularization penalty functions are considered in the solution process. A technique is given for creating coil winding patterns from complex, time-dependent current densities. To demonstrate the power of this design method, several coil windings are displayed for the primary and shield coils along with the corresponding 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 |
UTAS Author: | While, PT (Dr Peter While) |
UTAS Author: | Forbes, LK (Professor Larry Forbes) |
ID Code: | 36459 |
Year Published: | 2005 |
Funding Support: | Australian Research Council (DP0343350) |
Web of Science® Times Cited: | 7 |
Deposited By: | Mathematics |
Deposited On: | 2005-08-01 |
Last Modified: | 2006-03-28 |
Downloads: | 0 |
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