GB9320043D0 - Improvements in or relating to mri magnets - Google Patents

Improvements in or relating to mri magnets

Info

Publication number
GB9320043D0
GB9320043D0 GB939320043A GB9320043A GB9320043D0 GB 9320043 D0 GB9320043 D0 GB 9320043D0 GB 939320043 A GB939320043 A GB 939320043A GB 9320043 A GB9320043 A GB 9320043A GB 9320043 D0 GB9320043 D0 GB 9320043D0
Authority
GB
United Kingdom
Prior art keywords
relating
mri magnets
mri
magnets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB939320043A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Magnet Technology Ltd
Original Assignee
Oxford Magnet Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oxford Magnet Technology Ltd filed Critical Oxford Magnet Technology Ltd
Priority to GB939320043A priority Critical patent/GB9320043D0/en
Publication of GB9320043D0 publication Critical patent/GB9320043D0/en
Priority to GB9417541A priority patent/GB2282451B/en
Priority to EP94114292A priority patent/EP0645641B1/en
Priority to DE69419096T priority patent/DE69419096T2/en
Priority to US08/305,867 priority patent/US5680086A/en
Priority to JP23363694A priority patent/JP3548240B2/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
GB939320043A 1993-09-29 1993-09-29 Improvements in or relating to mri magnets Pending GB9320043D0 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB939320043A GB9320043D0 (en) 1993-09-29 1993-09-29 Improvements in or relating to mri magnets
GB9417541A GB2282451B (en) 1993-09-29 1994-09-01 Improvements in or relating to MRI magnets
EP94114292A EP0645641B1 (en) 1993-09-29 1994-09-12 Improvements in or relating to MRI magnets
DE69419096T DE69419096T2 (en) 1993-09-29 1994-09-12 Magnetic resonance imaging enhancements
US08/305,867 US5680086A (en) 1993-09-29 1994-09-14 MRI magnets
JP23363694A JP3548240B2 (en) 1993-09-29 1994-09-28 Magnetic resonance imaging (MRI) magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939320043A GB9320043D0 (en) 1993-09-29 1993-09-29 Improvements in or relating to mri magnets

Publications (1)

Publication Number Publication Date
GB9320043D0 true GB9320043D0 (en) 1993-11-17

Family

ID=10742680

Family Applications (2)

Application Number Title Priority Date Filing Date
GB939320043A Pending GB9320043D0 (en) 1993-09-29 1993-09-29 Improvements in or relating to mri magnets
GB9417541A Revoked GB2282451B (en) 1993-09-29 1994-09-01 Improvements in or relating to MRI magnets

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9417541A Revoked GB2282451B (en) 1993-09-29 1994-09-01 Improvements in or relating to MRI magnets

Country Status (1)

Country Link
GB (2) GB9320043D0 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2294120A (en) * 1994-09-22 1996-04-17 Univ California Eddy current-less pole tips for MRI magnets
GB2311375B (en) * 1996-03-20 2000-08-23 Oxford Magnet Tech Improvements in or relating to MRI magnets
US6150818A (en) * 1998-08-31 2000-11-21 General Electric Company Low eddy current and low hysteresis magnet pole faces in MR imaging
GB2400916B (en) * 1999-10-29 2004-12-29 Oxford Magnet Tech Improved magnet
US6783059B2 (en) * 2002-12-23 2004-08-31 General Electric Company Conduction cooled passively-shielded MRI magnet
CN100434928C (en) * 2003-05-23 2008-11-19 西门子（中国）有限公司 Magnetic field generating system used for magnetic resonance equipment
ITSV20040020A1 (en) * 2004-05-07 2004-08-07 Esaote Spa MAGNETIC STRUCTURE FOR MRI AND MRI MACHINES
EP2179300B1 (en) 2007-07-26 2013-04-10 Emscan Limited Magnet assembly

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827235A (en) * 1986-07-18 1989-05-02 Kabushiki Kaisha Toshiba Magnetic field generator useful for a magnetic resonance imaging instrument
JPS63241905A (en) * 1987-03-27 1988-10-07 Sumitomo Special Metals Co Ltd Magnetic field generating equipment
JPH02184002A (en) * 1989-01-10 1990-07-18 Sumitomo Special Metals Co Ltd Magnetic field generator for mri
JPH03131234A (en) * 1989-07-07 1991-06-04 Sumitomo Special Metals Co Ltd Equipment for generating magnetic field for mri
DE4037894A1 (en) * 1989-12-11 1991-06-13 Siemens Ag CORE SPIN TOMOGRAPH
JP2533758Y2 (en) * 1989-12-13 1997-04-23 信越化学工業 株式会社 Magnetic field generator
DE69129687T2 (en) * 1990-09-29 1999-03-11 Sumitomo Spec Metals Device for generating a magnetic field for imaging by means of magnetic resonance
US5124651A (en) * 1990-10-24 1992-06-23 Fonar Corporation Nuclear magnetic resonance scanners with composite pole facings
JP3414594B2 (en) * 1996-08-15 2003-06-09 富士通株式会社 Local line connection equipment

Also Published As

Publication number Publication date
GB2282451A (en) 1995-04-05
GB2282451B (en) 1997-11-12
GB9417541D0 (en) 1994-10-19

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