An inverse design of an open, head/neck RF coil for MRI

Lawrence, B. G., Crozier, S., Cowin, G. and Yau, D. D. (2002) An inverse design of an open, head/neck RF coil for MRI. Ieee Transactions On Biomedical Engineering, 49 9: 1024-1030.

Document type:	Journal Article
Collections:	Excellence in Research Australia (ERA) - Collection School of Information Technology and Electrical Engineering Publications

Author(s)	Lawrence, B. G. Crozier, S. Cowin, G. Yau, D. D.
Title	An inverse design of an open, head/neck RF coil for MRI
Journal name	Ieee Transactions On Biomedical Engineering
Publication date	2002
Sub-type	Article
Volume number	49
Issue number	9
ISSN	0018-9294
Start page	1024
End page	1030
Total pages	7
Editor(s)	Principe, J.
Place of publication	Piscataway, NJ
Publisher	The Institute of Electrical and Electronics Engineers
Collection year	2002
Language	eng
Subject	C1 291599 Biomedical Engineering not elsewhere classified 671402 Medical instrumentation
Abstract	Radio-frequency (RF) coils are a necessary component of magnetic resonance imaging (MRI) systems. When used in transmit operation, they act to generate a homogeneous RF magnetic field within a volume of interest and when in receive operation, they act to receive the nuclear magnetic resonance signal from the RF-excited specimen. This paper outlines a procedure for the design of open RF coils using the time-harmonic inverse method. This method entails the calculation of an ideal current density on a multipaned planar surface that would generate a specified magnetic field within the volume of interest. Because of the averaging effect of the regularization technique in the matrix solution, the specified magnetic field is shaped within an iterative procedure until the generated magnetic field matches the desired magnetic field. The stream-function technique is used to ascertain conductor positions and a method of moments package is then used to finalize the design. An open head/neck coil was designed to operate in a clinical 2T MRI system and the presented results prove the efficacy of this design methodology.
Keyword(s)	Engineering, Biomedical Electromagnetic Green's Function Inverse Technique Magnetic Resonance Imaging Mri Planar Rf Coil Resonator