JP4424650B2 - Ｍｒｉマグネット・アセンブリをシム調整するための方法及びシステム - Google Patents

Ｍｒｉマグネット・アセンブリをシム調整するための方法及びシステム Download PDF

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JP4424650B2
JP4424650B2 JP2003280545A JP2003280545A JP4424650B2 JP 4424650 B2 JP4424650 B2 JP 4424650B2 JP 2003280545 A JP2003280545 A JP 2003280545A JP 2003280545 A JP2003280545 A JP 2003280545A JP 4424650 B2 JP4424650 B2 JP 4424650B2
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Prior art keywords
shims
magnetic field
shim
edge
field generating
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Japanese (ja)
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JP2004057832A5 (https=
JP2004057832A (ja
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チンファー・ファン
ブー−シン・スー
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GE Medical Systems Global Technology Co LLC
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GE Medical Systems Global Technology Co LLC
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    • 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

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP2003280545A 2002-07-29 2003-07-28 Ｍｒｉマグネット・アセンブリをシム調整するための方法及びシステム Expired - Fee Related JP4424650B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/064,589 US6984982B2 (en) 2002-07-29 2002-07-29 Method and system for shimming an MRI magnet assembly

Publications (3)

Publication Number Publication Date
JP2004057832A JP2004057832A (ja) 2004-02-26
JP2004057832A5 JP2004057832A5 (https=) 2008-09-11
JP4424650B2 true JP4424650B2 (ja) 2010-03-03

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JP2003280545A Expired - Fee Related JP4424650B2 (ja) 2002-07-29 2003-07-28 Ｍｒｉマグネット・アセンブリをシム調整するための方法及びシステム

Country Status (4)

Country Link
US (1) US6984982B2 (https=)
EP (1) EP1389733B1 (https=)
JP (1) JP4424650B2 (https=)
CN (1) CN100565235C (https=)

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US7081752B2 (en) * 2003-04-04 2006-07-25 General Electric Company System and method of electrically loading radio-frequency coils using conductive polymers
WO2005037101A1 (ja) * 2003-10-15 2005-04-28 Hitachi Medical Corporation 磁気共鳴イメージング装置
GB2414080B (en) * 2004-05-14 2006-07-26 Oxford Magnet Tech Tool and method for shimming a magnet
US7755359B2 (en) * 2004-05-31 2010-07-13 Hitachi Medical Corporation Magnetic resonance imaging apparatus with noise suppressing structure
JP4639948B2 (ja) * 2005-05-17 2011-02-23 三菱電機株式会社 磁石装置及びそれを用いた磁気共鳴イメージング装置
JP4188387B2 (ja) * 2006-06-05 2008-11-26 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 磁気共鳴イメージング装置及びシム値設定方法
JP4368909B2 (ja) * 2007-05-25 2009-11-18 三菱電機株式会社 超電導マグネットの磁場調整装置及び磁場調整方法
JP5349177B2 (ja) * 2009-07-09 2013-11-20 株式会社東芝 磁気共鳴イメージング装置
JP5627415B2 (ja) * 2010-11-24 2014-11-19 三菱電機株式会社 Ｍｒｉ用超電導マグネットの調整方法
ITGE20120059A1 (it) * 2012-06-22 2013-12-23 Esaote Spa Metodo per la correzione della disomogeneità del campo magnetico statico generato dal magnete di una macchina mri e dispositivo per l'attuazione di tale metodo
CN103713269A (zh) * 2012-09-29 2014-04-09 西门子(深圳)磁共振有限公司 用于磁体的匀场片、匀场条以及磁体和磁共振系统
JP6259303B2 (ja) * 2014-02-04 2018-01-10 株式会社日立製作所 磁石装置および磁気共鳴撮像装置
CN105652225B (zh) * 2015-12-28 2019-01-25 沈阳东软医疗系统有限公司 一种磁共振系统的匀场方法和装置
CA3123142A1 (en) * 2016-03-22 2017-09-28 Hyperfine Research, Inc. Methods and apparatus for magnetic field shimming
AU2019274404A1 (en) * 2018-05-21 2020-11-12 Hyperfine Operations, Inc. B0 magnet methods and apparatus for a magnetic resonance imaging system
DE102019212508A1 (de) 2019-08-21 2021-02-25 Bruker Switzerland Ag Temperiersystem für MR-Geräte mit Permanentmagnetanordung

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JPH03131234A (ja) 1989-07-07 1991-06-04 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
US5220302A (en) * 1990-01-22 1993-06-15 The University Of Texas System Board Of Regents Nmr clinical chemistry analyzer and method of forming a shield
JPH07106155A (ja) 1993-05-26 1995-04-21 General Electric Co <Ge> Ｃ字形超伝導磁石
US5446434A (en) 1994-07-27 1995-08-29 General Electric Company Magnet having pole faces with trapezoidal-shaped shims
US5635839A (en) * 1994-11-04 1997-06-03 Picker International, Inc. High order passive shimming assembly for MRI magnets
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US5923235A (en) * 1998-10-23 1999-07-13 General Electric Company Shim assembly for a pole face of a magnet
US6255928B1 (en) * 1998-11-02 2001-07-03 General Electric Company Magnet having a shim for a laminated pole piece
US6259252B1 (en) * 1998-11-24 2001-07-10 General Electric Company Laminate tile pole piece for an MRI, a method manufacturing the pole piece and a mold bonding pole piece tiles
US5999076A (en) * 1998-12-30 1999-12-07 General Electric Company Magnetic resonance imaging passively shimmed superconducting magnet assembly
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AU2872701A (en) 2000-01-25 2001-08-07 Uri Rapoport Field adjusting mechanisms and methods for permanent magnet arrangement with backplate
US6294972B1 (en) * 2000-08-03 2001-09-25 The Mcw Research Foundation, Inc. Method for shimming a static magnetic field in a local MRI coil
US6670877B2 (en) * 2001-01-25 2003-12-30 Uri Rapoport Field adjusting mechanisms and methods for permanent magnet arrangement with backplate
US6566991B1 (en) * 2001-04-24 2003-05-20 Fonar Corporation Apparatus and method of shimming a magnetic field
DE10147984B4 (de) * 2001-09-28 2007-10-11 Siemens Ag Magnetresonanz-Untersuchungsgerät mit einer Einrichtung zur Erzeugung eines homogenen Magnetfeldes und Verfahren zur Verbesserung der Homogenität eines Magnetfeldes

Also Published As

Publication number Publication date
CN1480742A (zh) 2004-03-10
CN100565235C (zh) 2009-12-02
EP1389733B1 (en) 2011-09-14
EP1389733A3 (en) 2005-03-16
US20040017196A1 (en) 2004-01-29
US6984982B2 (en) 2006-01-10
JP2004057832A (ja) 2004-02-26
EP1389733A2 (en) 2004-02-18

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