DE69526409T2 - Verbesserungen von oder mit Bezug auf kryogene MRI-Magneten - Google Patents

Verbesserungen von oder mit Bezug auf kryogene MRI-Magneten

Info

Publication number
DE69526409T2
DE69526409T2 DE69526409T DE69526409T DE69526409T2 DE 69526409 T2 DE69526409 T2 DE 69526409T2 DE 69526409 T DE69526409 T DE 69526409T DE 69526409 T DE69526409 T DE 69526409T DE 69526409 T2 DE69526409 T2 DE 69526409T2
Authority
DE
Germany
Prior art keywords
cryogenic
mri magnets
mri
magnets
cryogenic mri
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
DE69526409T
Other languages
English (en)
Other versions
DE69526409D1 (de
Inventor
Daniel Edward Brown
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
Application granted granted Critical
Publication of DE69526409D1 publication Critical patent/DE69526409D1/de
Publication of DE69526409T2 publication Critical patent/DE69526409T2/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
    • G01R33/3873—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
    • G01R33/381—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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69526409T 1994-11-29 1995-11-03 Verbesserungen von oder mit Bezug auf kryogene MRI-Magneten Expired - Fee Related DE69526409T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9424069A GB2295672B (en) 1994-11-29 1994-11-29 Improvements in or relating to cryogenic MRI magnets

Publications (2)

Publication Number Publication Date
DE69526409D1 DE69526409D1 (de) 2002-05-23
DE69526409T2 true DE69526409T2 (de) 2002-11-07

Family

ID=10765151

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69526409T Expired - Fee Related DE69526409T2 (de) 1994-11-29 1995-11-03 Verbesserungen von oder mit Bezug auf kryogene MRI-Magneten

Country Status (5)

Country Link
US (1) US5701112A (de)
EP (1) EP0715181B1 (de)
JP (1) JPH08224219A (de)
DE (1) DE69526409T2 (de)
GB (1) GB2295672B (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10155765A (ja) * 1996-08-26 1998-06-16 General Electric Co <Ge> 閉構造磁気共鳴イメージング・マグネット
US5874882A (en) * 1998-02-19 1999-02-23 General Electric Company Open and shielded superconductive magnet
US6577125B2 (en) * 2000-12-18 2003-06-10 Halliburton Energy Services, Inc. Temperature compensated magnetic field apparatus for NMR measurements
US6433550B1 (en) * 2001-02-13 2002-08-13 Koninklijke Philips Corporation N.V. MRI magnet with vibration compensation
DE10217384C1 (de) * 2002-04-18 2003-12-24 Siemens Ag Gradientenspulensystem
WO2004099817A2 (en) 2003-05-02 2004-11-18 Halliburton Energy Services, Inc. Systems and methods for nmr logging
WO2004106960A1 (en) 2003-05-30 2004-12-09 Koninklijke Philips Electronics N.V. Magnetic resonance imaging scanner with molded fixed shims
MXPA06003671A (es) 2003-10-03 2006-06-20 Halliburton Energy Serv Inc Sistema y metodos para diagrafias basadas en t1.
US7224167B2 (en) 2004-11-30 2007-05-29 General Electric Company Magnetic field generating apparatus and method for magnetic resonance imaging
CN101080644A (zh) * 2004-12-14 2007-11-28 皇家飞利浦电子股份有限公司 用于补偿主磁体的场漂移的磁共振成像设备、方法和计算机程序
US7439836B2 (en) 2005-12-28 2008-10-21 General Electric Company Magnetic field generating apparatus for magnetic resonance imaging
JP4237786B2 (ja) * 2006-09-27 2009-03-11 株式会社日立製作所 核磁気共鳴信号用ソレノイドコイル及び核磁気共鳴用プローブ
DE102009045373B4 (de) * 2009-10-06 2011-12-08 Bruker Biospin Gmbh Kompakte supraleitende Magnetanordnung mit aktiver Abschirmung, wobei die Abschirmspule das Feldmaximum der Hauptfeldspule dämpft
DE102010013890A1 (de) * 2010-04-07 2011-10-13 Siemens Aktiengesellschaft Verfahren und Shim-Massen-Positionsbestimmungsgerät zur Ermittlung einer Shim-Massen-Anordnung
US8604793B2 (en) * 2010-10-21 2013-12-10 General Electric Company Superconducting magnet having cold iron shimming capability
US10661098B2 (en) 2013-06-21 2020-05-26 Koninklijke Philips N.V. Shim system for a magnetic resonance hybrid scanner

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123493A1 (de) * 1981-06-13 1982-12-30 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Elektromagnet fuer die nmr-tomographie
DE3333755A1 (de) * 1983-09-19 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Magneteinrichtung einer anlage der kernspin-tomographie mit einer abschirmvorrichtung
US4587504A (en) * 1983-11-11 1986-05-06 Oxford Magnet Technology Limited Magnet assembly for use in NMR apparatus
US4743880A (en) * 1987-09-28 1988-05-10 Ga Technologies Inc. MRI magnet system having shield and method of manufacture
NL9001300A (nl) * 1990-06-08 1992-01-02 Koninkl Philips Electronics Nv Magneetstelsel voor magnetische resonantie.
FR2667948B1 (fr) * 1990-10-12 1993-04-16 Magnetech Systeme magnetique a champ homogene de grande accessibilite.
US5124651A (en) * 1990-10-24 1992-06-23 Fonar Corporation Nuclear magnetic resonance scanners with composite pole facings
GB2276945B (en) * 1993-04-08 1997-02-26 Oxford Magnet Tech Improvements in or relating to MRI magnets
FI105293B (fi) * 1993-06-08 2000-07-14 Picker Nordstar Oy Magneettikuvaukseen käytettävän magneetin napakenkä

Also Published As

Publication number Publication date
EP0715181A1 (de) 1996-06-05
US5701112A (en) 1997-12-23
GB2295672A (en) 1996-06-05
EP0715181B1 (de) 2002-04-17
JPH08224219A (ja) 1996-09-03
GB2295672B (en) 1999-05-12
GB9424069D0 (en) 1995-01-18
DE69526409D1 (de) 2002-05-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee