Magnetic field generating apparatus for magnetic resonance...

Details Magnetic field generating apparatus for magnetic resonance... Magnetic field generating apparatus for magnetic resonance...

2005-12-28

2008-10-21

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

C335S296000, C335S216000

Reexamination Certificate

active

07439836

ABSTRACT:
A Magnetic Resonance Imaging (MRI) system is disclosed. The MRI system includes a cryogenic magnet assembly with a cryogenic vessel housing a superconducting magnet. Disposed radially inboard of the cryogenic magnet assembly are a gradient coil module and a plurality of room temperature steel rings proximate to the gradient coil module. A field of view is defined by at least the superconducting magnet, the gradient coil module, and the plurality of room temperature steel rings. In response to the superconducting magnet being energized, the room temperature steel rings create high order harmonics that serve to expand the magnetic field homogeneity FOV, and low order harmonics that tend to degrade the magnetic field homogeneity within the FOV. The low order harmonics are compensated for by the cryogenic magnet assembly.

REFERENCES:
patent: 5400786 (1995-03-01), Allis
patent: 5635839 (1997-06-01), Srivastava et al.
patent: 5982260 (1999-11-01), Byrne
patent: 6100780 (2000-08-01), Dorri et al.
patent: 6215383 (2001-04-01), Laskaris
patent: 6218923 (2001-04-01), Laskaris
patent: 6798095 (2004-09-01), Steinmeyer
patent: 6836119 (2004-12-01), DeMeester et al.
patent: 0715181 (1995-11-01), None

Affiliated with

Also associated with

Rating

Magnetic field generating apparatus for magnetic resonance... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic field generating apparatus for magnetic resonance..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic field generating apparatus for magnetic resonance... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4003332