CN100565235C - 调整磁共振成像磁场发生组件的方法和系统及磁共振成像磁场发生组件 - Google Patents

调整磁共振成像磁场发生组件的方法和系统及磁共振成像磁场发生组件 Download PDF

Info

Publication number
CN100565235C
CN100565235C CNB031522084A CN03152208A CN100565235C CN 100565235 C CN100565235 C CN 100565235C CN B031522084 A CNB031522084 A CN B031522084A CN 03152208 A CN03152208 A CN 03152208A CN 100565235 C CN100565235 C CN 100565235C
Authority
CN
China
Prior art keywords
magnetic field
field generating
generating assembly
magnetic
shims
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
CNB031522084A
Other languages
English (en)
Chinese (zh)
Other versions
CN1480742A (zh
Inventor
J·黄
B·-X·徐
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.)
GE Medical Systems Global Technology Co LLC
Original Assignee
GE Medical Systems Global Technology Co LLC
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 GE Medical Systems Global Technology Co LLC filed Critical GE Medical Systems Global Technology Co LLC
Publication of CN1480742A publication Critical patent/CN1480742A/zh
Application granted granted Critical
Publication of CN100565235C publication Critical patent/CN100565235C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
CNB031522084A 2002-07-29 2003-07-29 调整磁共振成像磁场发生组件的方法和系统及磁共振成像磁场发生组件 Expired - Fee Related CN100565235C (zh)

Applications Claiming Priority (2)

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
US10/064589 2002-07-29

Publications (2)

Publication Number Publication Date
CN1480742A CN1480742A (zh) 2004-03-10
CN100565235C true CN100565235C (zh) 2009-12-02

Family

ID=30769098

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB031522084A Expired - Fee Related CN100565235C (zh) 2002-07-29 2003-07-29 调整磁共振成像磁场发生组件的方法和系统及磁共振成像磁场发生组件

Country Status (4)

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

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235284A (en) * 1989-07-07 1993-08-10 Mitsubishi Denki Kabushiki Kaisha Passive shim arrangement for nuclear magnetic resonance
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
US5532597A (en) * 1994-11-04 1996-07-02 Picker International, Inc. Passive shimming technique for MRI magnets
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set
KR100373577B1 (ko) * 1997-12-26 2003-02-26 스미토모 도큐슈 긴조쿠 가부시키가이샤 자기 공명 촬영 장치용 자계 발생 장치
US6011396A (en) * 1998-01-02 2000-01-04 General Electric Company Adjustable interventional magnetic resonance imaging magnet
US5883558A (en) * 1998-02-19 1999-03-16 General Electric Company Open superconductive magnet having shielding
US5994991A (en) * 1998-02-19 1999-11-30 General Electric Company Open magnet having shielding
GB2337595B (en) * 1998-05-22 2003-03-19 Oxford Magnet Tech Improvements in or relating to magnetic resonance imaging systems
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
DE19901332C1 (de) * 1999-01-15 2000-09-14 Bruker Analytik Gmbh Verfahren zum Homogenisieren von Magnetfeldern
DE19901331B4 (de) * 1999-01-15 2006-10-26 Bruker Biospin Gmbh Einrichtung und Verfahren zum Homogenisieren eines Magnetfeldes
US6275129B1 (en) * 1999-10-26 2001-08-14 General Electric Company Shim assembly for a magnet and method for making
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
JP4424650B2 (ja) 2010-03-03
CN1480742A (zh) 2004-03-10
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

Similar Documents

Publication Publication Date Title
CN100565235C (zh) 调整磁共振成像磁场发生组件的方法和系统及磁共振成像磁场发生组件
US6275128B1 (en) MRI magnetic field generator
EP0371775B1 (en) Permanent magnet arrangement
CN100556359C (zh) 磁场产生装置
EP0998876B1 (en) Magnetic field generating device for mri
JPH03131234A (ja) Ｍｒｉ用磁界発生装置
US4998976A (en) Permanent magnet arrangement
KR100550704B1 (ko) 자장균일화 방법 및 장치 및 자장 장치
JP2002034947A (ja) マグネット装置、および、これを用いたｍｒｉ装置
JP7407857B2 (ja) 磁気共鳴装置用のシム鉄
US6809619B1 (en) System and method for adjusting magnetic center field for permanent MRI magnetic field generator
US7898257B2 (en) Open yoke magnet assembly
US20050035765A1 (en) Inclined magnetic field generation coil and magnetic field generator for MRI
JP2649436B2 (ja) Ｍｒｉ用磁界発生装置
JPH0423411A (ja) Ｍｒｉ用磁界発生装置
US6215382B1 (en) Device for generating a magnetic field in an air gap
JP2005237501A (ja) 磁気回路および磁気回路磁界調整方法
JP2002102205A (ja) 磁気共鳴イメージング装置
JP3906418B2 (ja) Ｍｒｉ用磁界発生装置
JP2006006936A (ja) 磁界生成装置及びそのシミング方法
JPH01164356A (ja) 均一磁界の発生装置
CN1187022C (zh) 磁共振成象磁场发生器
JP2004065714A (ja) Ｍｒｉ用磁界発生装置
JP2003265434A (ja) 磁気共鳴イメージング装置
Esparza-Coss et al. A low cost MRI permanent magnet prototype

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091202

Termination date: 20200729