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ATE335209T1 - Magnetsystem für die bildgebende magnetische resonanz - Google Patents

Magnetsystem für die bildgebende magnetische resonanz

Info

Publication number
ATE335209T1
ATE335209T1 AT99306174T AT99306174T ATE335209T1 AT E335209 T1 ATE335209 T1 AT E335209T1 AT 99306174 T AT99306174 T AT 99306174T AT 99306174 T AT99306174 T AT 99306174T AT E335209 T1 ATE335209 T1 AT E335209T1
Authority
AT
Austria
Prior art keywords
imaging volume
pair
magnetic flux
pole pieces
back side
Prior art date
Application number
AT99306174T
Other languages
English (en)
Inventor
Gordon D Demeester
John V M Mcginley
Ian Robert Young
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE335209T1 publication Critical patent/ATE335209T1/de

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
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent 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
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
AT99306174T 1998-08-28 1999-08-03 Magnetsystem für die bildgebende magnetische resonanz ATE335209T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/141,990 US6147495A (en) 1998-08-28 1998-08-28 Magnetic resonance imaging with integrated poleface features

Publications (1)

Publication Number Publication Date
ATE335209T1 true ATE335209T1 (de) 2006-08-15

Family

ID=22498117

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99306174T ATE335209T1 (de) 1998-08-28 1999-08-03 Magnetsystem für die bildgebende magnetische resonanz

Country Status (5)

Country Link
US (1) US6147495A (de)
EP (1) EP0982599B1 (de)
JP (1) JP2000083924A (de)
AT (1) ATE335209T1 (de)
DE (1) DE69932570T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002336215A (ja) * 2001-05-17 2002-11-26 Mitsubishi Electric Corp 超電導マグネット装置及び磁場均一度調整方法
US6861933B1 (en) * 2001-05-17 2005-03-01 Mitsubishi Denki Kabushiki Kaisha Superconductive magnet device
WO2003050555A1 (en) * 2001-12-10 2003-06-19 Koninklijke Philips Electronics N.V. Open magnetic resonance imaging (mri) magnet system
JP2005524510A (ja) * 2002-05-08 2005-08-18 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 減少するノイズ生成となる磁気共鳴撮像装置
CN100415162C (zh) * 2005-03-09 2008-09-03 Ge医疗系统环球技术有限公司 磁体系统和磁共振成像系统
GB2448479B (en) * 2007-04-18 2009-06-03 Siemens Magnet Technology Ltd Improved shim for imaging magnets
CN101388271A (zh) * 2007-09-14 2009-03-18 Ge医疗系统环球技术有限公司 磁体系统和mri设备
GB201114045D0 (en) * 2011-08-15 2011-09-28 Emscan Ltd Magnet
CN105072990A (zh) * 2013-04-15 2015-11-18 株式会社东芝 磁共振成像装置

Family Cites Families (11)

* 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
US4766378A (en) * 1986-11-28 1988-08-23 Fonar Corporation Nuclear magnetic resonance scanners
GB8825529D0 (en) * 1988-11-01 1988-12-07 Oxford Magnet Tech Magnetic field generating assembly
US5134374A (en) * 1989-06-01 1992-07-28 Applied Superconetics Magnetic field control apparatus
US5250901A (en) * 1991-11-07 1993-10-05 The Regents Of The University Of California Open architecture iron core electromagnet for MRI using superconductive winding
JP3742662B2 (ja) * 1992-08-05 2006-02-08 ゼネラル・エレクトリック・カンパニイ 開放形磁気共鳴イメージングに適した磁石
US5495171A (en) * 1993-01-19 1996-02-27 Fonar Corporation Eddy current control in NMR imaging systems
GB2276946B (en) * 1993-04-08 1997-04-02 Oxford Magnet Tech Improvements in or relating to MRI magnets
FI933834A (fi) * 1993-09-01 1995-03-02 Picker Nordstar Oy Magneettikuvauslaitteen napakenkä
US5539366A (en) * 1994-07-27 1996-07-23 General Electric Company Magnet having contoured pole faces for magnetic field homogeneity
DE69613061T2 (de) * 1995-08-28 2001-10-31 Ge Yokogawa Medical Systems, Ltd. Magnetkreisanordnung mit einander gegenüberliegenden Permanentmagneten

Also Published As

Publication number Publication date
EP0982599B1 (de) 2006-08-02
US6147495A (en) 2000-11-14
DE69932570T2 (de) 2007-10-25
EP0982599A2 (de) 2000-03-01
JP2000083924A (ja) 2000-03-28
EP0982599A3 (de) 2002-04-10
DE69932570D1 (de) 2006-09-14

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Legal Events

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