Superconducting gradient shields in magnetic resonance imaging m

Details Superconducting gradient shields in magnetic resonance imaging m Superconducting gradient shields in magnetic resonance imaging m

1994-05-02

1996-07-23

Phillips, Michael W.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

335216, 361 19, 324318, H01F 700, H01F 100, G01V 300, H02H 700

Patent

active

055393675

ABSTRACT:
A magnetic resonance imaging magnet including a superconducting gradient shield positioned around the gradient coil and contiguous to the cryogen vessel, with the gradient shield being selectively placed in superconducting operation to shield the magnet coils and structures from the magnetic fields generated by firing the imaging gradient coil positioned within the bore of the magnetic resonance imaging magnet. A plurality of thermally conductive members are compressed between the cryogen vessel and the gradient shield.

REFERENCES:
patent: 4656447 (1987-04-01), Keim et al.
patent: 4876510 (1989-10-01), Shiebold
patent: 4990878 (1991-02-01), Takechi
patent: 5153803 (1992-10-01), Rapeaux
patent: 5187327 (1993-02-01), Ohta
patent: 5289128 (1994-02-01), De Meester et al.
patent: 5296810 (1994-03-01), Morich

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