DocumentCode
1540961
Title
Eddy current effects in MRI superconducting magnets
Author
Badea, Eugene A. ; Craiu, Ovidiu
Author_Institution
BSG Inc., Sugerland, TX, USA
Volume
33
Issue
2
fYear
1997
fDate
3/1/1997 12:00:00 AM
Firstpage
1330
Lastpage
1333
Abstract
Magnetic resonance imaging (MRI), as well as some volume selected spectroscopy methods, use pulsed magnetic field gradients which induce multi-exponentially decaying eddy currents in all nonlaminated conductive parts of the superconducting magnets. This paper presents the analysis of the z gradient field distorsion due to the induced eddy currents and the corresponding correction in a 4 T/30 cm bore superferric self-shielded magnet
Keywords
NMR imaging; eddy currents; superconducting magnets; 4 T; MRI superconducting magnets; NMR; eddy current effects; magnetic resonance imaging; multi-exponentially decaying eddy currents; nonlaminated conductive parts; pulsed magnetic field gradients; superferric self-shielded magnet; volume selected spectroscopy methods; z gradient field distorsion; Boring; Degradation; Eddy currents; Iron; Magnetic resonance imaging; Magnetic separation; Radio frequency; Solenoids; Superconducting coils; Superconducting magnets;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.582501
Filename
582501
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