DE69532220D1 - Scheibenförmiger Magnet zur Bilderzeugung mittels magnetischer Resonanz - Google Patents

Scheibenförmiger Magnet zur Bilderzeugung mittels magnetischer Resonanz

Info

Publication number
DE69532220D1
DE69532220D1 DE69532220T DE69532220T DE69532220D1 DE 69532220 D1 DE69532220 D1 DE 69532220D1 DE 69532220 T DE69532220 T DE 69532220T DE 69532220 T DE69532220 T DE 69532220T DE 69532220 D1 DE69532220 D1 DE 69532220D1
Authority
DE
Germany
Prior art keywords
disc
magnetic resonance
resonance imaging
shaped magnet
magnet
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.)
Expired - Fee Related
Application number
DE69532220T
Other languages
English (en)
Other versions
DE69532220T2 (de
Inventor
Bizhan Dorri
Evangelos Trifon Laskaris
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of DE69532220D1 publication Critical patent/DE69532220D1/de
Publication of DE69532220T2 publication Critical patent/DE69532220T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01R33/3875—Compensation of inhomogeneities using correction coil assemblies, e.g. active 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
    • G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets
    • 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
    • G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
    • G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
    • 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
    • G01R33/42—Screening
    • G01R33/421—Screening of main or gradient magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69532220T 1994-04-29 1995-04-21 Scheibenförmiger Magnet zur Bilderzeugung mittels magnetischer Resonanz Expired - Fee Related DE69532220T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US237516 1994-04-29
US08/237,516 US5428292A (en) 1994-04-29 1994-04-29 Pancake MRI magnet with modified imaging volume

Publications (2)

Publication Number Publication Date
DE69532220D1 true DE69532220D1 (de) 2004-01-15
DE69532220T2 DE69532220T2 (de) 2004-09-16

Family

ID=22894055

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69532220T Expired - Fee Related DE69532220T2 (de) 1994-04-29 1995-04-21 Scheibenförmiger Magnet zur Bilderzeugung mittels magnetischer Resonanz

Country Status (4)

Country Link
US (1) US5428292A (de)
EP (1) EP0679900B1 (de)
JP (1) JP3527313B2 (de)
DE (1) DE69532220T2 (de)

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EP0766094B1 (de) * 1995-09-28 2002-05-29 Siemens Aktiengesellschaft Magnetanordnung für ein diagnostisches Magnetresonanzgerät
US5818319A (en) * 1995-12-21 1998-10-06 The University Of Queensland Magnets for magnetic resonance systems
EP0852016A1 (de) * 1996-07-01 1998-07-08 Koninklijke Philips Electronics N.V. Gerät zur bilderzeugung durch magnetische resonanz
US5900793A (en) * 1997-07-23 1999-05-04 Odin Technologies Ltd Permanent magnet assemblies for use in medical applications
US6150911A (en) * 1996-07-24 2000-11-21 Odin Technologies Ltd. Yoked permanent magnet assemblies for use in medical applications
US5744960A (en) * 1996-08-08 1998-04-28 Brigham And Women's Hospital Planar open magnet MRI system
US5721523A (en) * 1996-08-26 1998-02-24 General Electric Company Compact MRI superconducting magnet
US5677630A (en) * 1996-10-21 1997-10-14 General Electric Company Planar superconducting MRI magnet
IL119558A (en) 1996-11-04 2005-11-20 Odin Technologies Ltd Multi-probe mri/mrt system
US5914600A (en) * 1997-06-04 1999-06-22 Brigham And Women's Hospital Planar open solenoidal magnet MRI system
US6411187B1 (en) 1997-07-23 2002-06-25 Odin Medical Technologies, Ltd. Adjustable hybrid magnetic apparatus
US6157278A (en) * 1997-07-23 2000-12-05 Odin Technologies Ltd. Hybrid magnetic apparatus for use in medical applications
US6084497A (en) * 1997-08-05 2000-07-04 The University Of Queensland Superconducting magnets
WO1999015914A1 (en) * 1997-09-25 1999-04-01 Odin Technologies Ltd. Magnetic apparatus for mri
US6002255A (en) * 1997-11-20 1999-12-14 Brigham & Women's Hospital Planar open magnet MRI system having active target field shimming
JP2002502648A (ja) * 1998-02-09 2002-01-29 オーディン・メディカル・テクノロジーズ・リミテッド Ｍｒｉ又はｍｒｔプローブで使用するための開いた磁石及び開いた磁気装置を設計するための方法
US6208143B1 (en) 1998-04-10 2001-03-27 The Board Of Trustee Of The Leland Stanford Junior University Biplanar homogeneous field electromagnets and method for making same
AUPQ198899A0 (en) * 1999-08-03 1999-08-26 University Of Queensland, The A method of magnet design and magnet configuration
DE60032295T2 (de) * 1999-08-03 2007-05-03 NMR Holdings No. 2 Pty Ltd., Woolloomooloo Entwurfsverfahren für supraleitende Magnete
US6467157B1 (en) * 2000-01-26 2002-10-22 Odin Technologies, Ltd. Apparatus for construction of annular segmented permanent magnet
GB0007018D0 (en) * 2000-03-22 2000-05-10 Akguen Ali Magnetic resonance imaging apparatus and method
DE10041672C2 (de) * 2000-08-24 2002-07-11 Bruker Ag Faellanden Magnetanordnung mit einem zusätzlichen stromführenden Spulensystem und Verfahren zu deren Dimensionierung
US6700468B2 (en) * 2000-12-01 2004-03-02 Nmr Holdings No. 2 Pty Limited Asymmetric magnets for magnetic resonance imaging
US6633215B2 (en) 2001-05-01 2003-10-14 Ge Medical Systems Global Technology Company, Llc Superconducting magnetic resonance imaging magnet assembly and method with reverse wire channel orientation
US7242191B2 (en) * 2002-11-25 2007-07-10 General Electric Company Cold mass support structure and helium vessel of actively shielded high field open MRI magnets
US6831463B1 (en) 2003-06-20 2004-12-14 Brigham And Women's Hospital Ferrorefraction MRI system having two orthogonal remote field polarization axes
US20070052419A1 (en) * 2003-10-30 2007-03-08 Johannes Overweg Mri system with variable field of view magnet
US6965236B2 (en) * 2003-11-20 2005-11-15 Ge Medical Systems Global Technology Co., Llc MRI system utilizing supplemental static field-shaping coils
US20060080681A1 (en) * 2004-10-12 2006-04-13 Majid Anwar Mechanism to extend functionality in a restricted computing environment
US20060080680A1 (en) * 2004-10-12 2006-04-13 Majid Anwar Platform independent dynamic linking
US20060080683A1 (en) * 2004-10-12 2006-04-13 Majid Anwar Mechanism to circumvent restrictions of pre-written code components
GB2445759A (en) * 2006-11-28 2008-07-23 Inst Of Food Res Magnetic resonance imaging scanner
GB0625600D0 (en) * 2006-12-21 2007-01-31 Oxford Instr Plc Magnetic field generating system and method
IT1396080B1 (it) 2009-10-19 2012-11-09 Fond Istituto Italiano Di Tecnologia Complesso magnetico aperto, particolarmente per la formazione di immagini per risonanza magnetica.
GB201313392D0 (en) * 2013-07-26 2013-09-11 Mcdougall Ian L Conductor for superconducting magnets

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US4581580A (en) * 1983-12-14 1986-04-08 General Electric Company Intentionally non-orthogonal correction coils for high-homogeneity magnets
JPS60227403A (ja) * 1984-04-26 1985-11-12 Yokogawa Hokushin Electric Corp 磁場発生用コイル
GB8410972D0 (en) * 1984-04-30 1984-06-06 Oxford Magnet Tech Magnet assembly
US4506247A (en) * 1984-05-23 1985-03-19 General Electric Company Axisymmetric correction coil system for NMR magnets
US4500860A (en) * 1984-07-05 1985-02-19 General Electric Company Winding support and method for NMR magnet axisymmetric correction coils
US4509030A (en) * 1984-07-05 1985-04-02 General Electric Company Correction coil assembly for NMR magnets
US4523166A (en) * 1984-10-19 1985-06-11 General Electric Company Optimal field inhomogeneity correction coil operation for NMR magnets
GB8500248D0 (en) * 1985-01-04 1985-02-13 Oxford Magnet Tech Solenoids
JPS62117541A (ja) * 1985-11-18 1987-05-29 株式会社東芝 磁気共鳴イメ−ジング装置
US4724412A (en) * 1987-08-03 1988-02-09 General Electric Company Method of determining coil arrangement of an actively shielded magnetic resonance magnet
JPS6458247A (en) * 1987-08-29 1989-03-06 Fuji Electric Co Ltd Uniform magnetic field coil
US4924198A (en) * 1988-07-05 1990-05-08 General Electric Company Superconductive magnetic resonance magnet without cryogens
GB8912601D0 (en) * 1989-06-01 1989-07-19 Oxford Magnet Tech Magnetic field generating apparatus
US4986078A (en) * 1989-08-17 1991-01-22 General Electric Company Refrigerated MR magnet support system
US5006804A (en) * 1989-12-04 1991-04-09 General Electric Company Method of optimizing shim coil current selection in magnetic resonance magnets
US5117188A (en) * 1990-10-29 1992-05-26 General Atomics Quasi-open magnet configuration for use in magnetic resonance imaging
US5359310A (en) * 1992-04-15 1994-10-25 Houston Advanced Research Center Ultrashort cylindrical shielded electromagnet for magnetic resonance imaging
US5382904A (en) * 1992-04-15 1995-01-17 Houston Advanced Research Center Structured coil electromagnets for magnetic resonance imaging and method for fabricating the same
US5291169A (en) * 1992-11-02 1994-03-01 General Electric Company Open architecture magnetic resonance imaging superconducting magnet assembly

Also Published As

Publication number Publication date
DE69532220T2 (de) 2004-09-16
EP0679900A1 (de) 1995-11-02
JPH0838455A (ja) 1996-02-13
JP3527313B2 (ja) 2004-05-17
US5428292A (en) 1995-06-27
EP0679900B1 (de) 2003-12-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: ROEGER UND KOLLEGEN, 73728 ESSLINGEN

8339 Ceased/non-payment of the annual fee