RF surface receive array coils: the art of an LC circuit

Fujita, Hiroyuki, Zheng, Tsinghua, Yang, Xiaoyu, Finnerty, Matthew J. and Handa, Shinya (2013) RF surface receive array coils: the art of an LC circuit. Journal of Magnetic Resonance Imaging, 38 1: 12-25. doi:10.1002/jmri.24159


Author Fujita, Hiroyuki
Zheng, Tsinghua
Yang, Xiaoyu
Finnerty, Matthew J.
Handa, Shinya
Title RF surface receive array coils: the art of an LC circuit
Journal name Journal of Magnetic Resonance Imaging   Check publisher's open access policy
ISSN 1053-1807
1522-2586
Publication date 2013-07
Year available 2013
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1002/jmri.24159
Open Access Status
Volume 38
Issue 1
Start page 12
End page 25
Total pages 14
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Collection year 2014
Language eng
Abstract The radiofrequency (RF) receive array coil is a complicated device with many inductors and capacitors and serves as one of the most critical magnetic resonance imaging (MRI) electronic devices. It directly determines the achievable level of signal-to-noise ratio (SNR). Simply put, however, the RF coil is nothing but an LC circuit. The receive array coil was first proposed more than 20 years ago, evolving from a simple arrangement with a few electronic channels to a complicated system of 128 channels, enabling highly sophisticated parallel imaging, at different field strengths. This article summarizes the basic concepts pertaining to RF receive coil arrays and their associated SNR and reviews the theories behind the major components of such arrays. This includes discussions of the intrinsic SNR of a receive coil, the matching circuits, low-noise preamplifiers, coupling/decoupling amongst coils, the coupling between receive and transmit coils, decoupling via preamplifiers, and baluns. An 8-channel receive array coil on a cylindrical former serves as a useful example for demonstrating various points in the review.
Keyword RF coil
RF array coil
Preamplifier
Decoupling
Balun
Q-Index Code CX
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Non HERDC
School of Information Technology and Electrical Engineering Publications
 
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