Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type
Patent
1995-10-23
1996-11-12
Brown, Brian W.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Superconductive type
335301, 324319, 324320, H01F 722, G01V 300
Patent
active
055744176
ABSTRACT:
An open magnetic resonance imaging (MRI) magnet having first and second spaced-apart superconductive coil assemblies each including a toroidal-shaped coil housing containing a superconductive main coil. A generally annular-shaped permanent magnet array is associated with each coil assembly, being generally coaxially aligned with the associated coil assembly and being spaced radially inward and radially apart from the associated coil assembly's superconductive main coil. The permanent magnet arrays overcome the gross magnetic field distortions in the imaging volume of the superconductive main coils (created by the open space between the magnet's superconductive coil assemblies) to produce a magnetic field of high uniformity within the imaging volume.
REFERENCES:
patent: 4698611 (1987-10-01), Vermilyea
patent: 4710741 (1987-12-01), McGinley
patent: 4924198 (1990-05-01), Laskaris
patent: 5291169 (1994-03-01), Ige et al.
patent: 5343183 (1994-08-01), Shimada et al.
patent: 5389909 (1995-02-01), Havens
patent: 5410287 (1995-04-01), Laskaris et al.
patent: 5463364 (1995-10-01), Muller
Pending U.S. patent application Ser. No. 373,995, Filed Oct. 17, 1995, by B. Dorri, "Method for Passively Shimming an Open Magnet".
Pending U.S. patent application Ser. No. 373,996, Filed Oct. 17, 1995, by B. Dorri, "Method for Passively Shimming A Magnet".
Pending U.S. patent application Ser. No. 08/509,565, Filed Jul. 31, 1995, by T. Havens et al., "Open Architecture Magnetic Resonance Imaging Superconducting Magnet Assembly".
Dorri Bizhan
Laskaris Evangelos T.
Barrera Raymond M.
Brown Brian W.
Erickson Douglas E.
General Electric Company
Snyder Marvin
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