Magnetic resonance imaging device and gradient magnetic...

Details Magnetic resonance imaging device and gradient magnetic... Magnetic resonance imaging device and gradient magnetic...

2005-08-23

2005-08-23

Shrivastav, Brij B. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

C324S322000

Reexamination Certificate

active

06933722

ABSTRACT:
To reduce vibration and noise generated in supplying pulsatile current to the gradient magnetic field coil for driving that coil in a MRI apparatus, an active shielded gradient magnetic field coil is used, in which the gradient magnetic field coil is supported by and fixed to the static magnetic field generating magnet. The supporter for supporting this gradient magnetic field coil in non-contact does not prevent the interventional procedure performed by a doctor. Further, an eddy current generated on the surface of the static magnetic field generating magnet near the periphery of the gradient magnetic field coil, when supplying the pulsatile current to the gradient magnetic field coil, can be reduced.

REFERENCES:
patent: 5617026 (1997-04-01), Yoshino et al.
patent: 6144204 (2000-11-01), Sementchenko

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