Cryogenic MRI magnets

Details Cryogenic MRI magnets Cryogenic MRI magnets

1995-11-13

1997-12-23

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Superconductive type

335297, 324318, H01F 100

Patent

active

057011125

ABSTRACT:
An electromagnet for use in MRI apparatus comprising an annular vessel inside which annular windings energizable to produce a magnetic field are contained together with iron components, hereinafter termed cold iron, which components are mechanically anchored with respect to the windings, and iron shim rings positioned externally of the vessel within its annular bore, hereinafter termed warm iron, the size and relative position of the shim rings being chosen so that instability of the magnetic field introduced by one shim ring, due to vibration or temperature changes, is substantially compensated for by an equal and opposite effect produced by one or more other shim rings.

REFERENCES:
patent: 4590452 (1986-05-01), Ries et al.
patent: 4743880 (1988-05-01), Breneman et al.
patent: 5124651 (1992-06-01), Danby et al.
patent: 5555251 (1996-09-01), Kinanen

Affiliated with

Also associated with

Rating

Cryogenic MRI magnets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cryogenic MRI magnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cryogenic MRI magnets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1804748