Shielded and open MRI magnet

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

335301, 324318, 324319, G01V 300

Patent

active

055658318

ABSTRACT:
A shielded and open magnetic resonance imaging (MRI) magnet having two spaced-apart, generally toroidal-shaped superconductive coil assemblies. Each coil assembly has a coil housing containing a generally annular-shaped superconductive main and a radially-outwardly spaced-apart shielding coil carrying electric currents in opposing directions. Preferably, supplemental shielding is provided with the addition of: a generally annular permanent magnet configuration internal to, or external of, the coil housings; a generally-non-permanently-magnetized external ferromagnetic shield having at least a portion positioned longitudinally between the coil housings, an external resistive coil; or combinations thereof.

REFERENCES:
patent: 4724412 (1988-02-01), Kalafala
patent: 4924198 (1990-05-01), Laskaris
patent: 5237300 (1993-08-01), Ige et al.
patent: 5291169 (1994-03-01), Ige et al.
patent: 5309106 (1994-05-01), Miyajima et al.
patent: 5389909 (1995-02-01), Havens
patent: 5410287 (1995-04-01), Laskaris et al.
patent: 5448214 (1995-09-01), Laskaris
patent: 5463364 (1995-10-01), Miller
Pending U.S. Patent No. 5,517,169 filed Oct. 17, 1994, by E. T. Laskaris et al., entitled "Superconducting Magnet with Magnet Shielding".
Pending U.S. Patent No. 5,517,168, filed Oct. 17, 1994, by E. T. Laskaris et al., entitled "Superconducting Magnet with Magnet Shielding".
Concurrently filled U.S. Patent Application RD-24637, by Bizhan Dorri et al., entitled "Cryogenic-Fluid-Cooled Open MRI Magnet with Uniform Magnetic Field", Serial No. 08/547085.
Concurrently filed U.S. Patent Application RD-24648, by Bizhan Dorri et al., entitled "Open MRI Magnet with Homogeneous Imaging Volume", Serial No. 08/547002.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Shielded and open MRI magnet does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1249568

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.