DocumentCode
1019770
Title
Design of the RF antenna for MRI
Author
Fujita, M. ; Higuchi, M. ; Tsuboi, H. ; Tanaka, H. ; Misaki, T.
Author_Institution
Fuji Electr. Corp. Res. & Dev. Ltd., Chiba, Japan
Volume
26
Issue
2
fYear
1990
fDate
3/1/1990 12:00:00 AM
Firstpage
901
Lastpage
904
Abstract
A RF antenna for MRI (magnetic resonance imaging) must emit very uniform electromagnetic fields over the imaging space as well as have a high efficiency in order to obtain high quality images. The authors have developed a program in which the moment method using a point-matching formulation is used. It is demonstrated, using the moment method, that the uniformity of the current distribution on the RF antenna can be improved by using adaptive series capacitors. This allows the adaptive dimensions of the multiturn RF antenna to be calculated to make the electromagnetic field over the imaging space uniform, on the assumption that uniform current flows on the antenna
Keywords
antennas; biomedical NMR; biomedical equipment; RF antenna; adaptive series capacitors; electromagnetic fields; magnetic resonance imaging; moment method; point-matching formulation; Adaptive arrays; Capacitors; Current distribution; Electromagnetic fields; Magnetic resonance imaging; Moment methods; Radio frequency; Receiving antennas; Superconducting coils; Transmitting antennas;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.106463
Filename
106463
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