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Eddy current effects in MRI superconducting magnets

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2 Author(s)
Badea, E.A. ; BSG Inc., Sugerland, TX, USA ; Craiu, O.

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

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 2 )