ATE359525T1 - Anordnung zum passiven shimmen von magnetfeldern - Google Patents

Anordnung zum passiven shimmen von magnetfeldern

Info

Publication number
ATE359525T1
ATE359525T1 AT00966326T AT00966326T ATE359525T1 AT E359525 T1 ATE359525 T1 AT E359525T1 AT 00966326 T AT00966326 T AT 00966326T AT 00966326 T AT00966326 T AT 00966326T AT E359525 T1 ATE359525 T1 AT E359525T1
Authority
AT
Austria
Prior art keywords
shimmering
passive
arrangement
magnetic fields
homogeneity
Prior art date
Application number
AT00966326T
Other languages
English (en)
Inventor
Marcel Jan Marie Kruip
Original Assignee
Siemens 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 Siemens Magnet Technology Ltd filed Critical Siemens Magnet Technology Ltd
Application granted granted Critical
Publication of ATE359525T1 publication Critical patent/ATE359525T1/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
    • G01R33/387—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)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Liquid Crystal (AREA)
AT00966326T 1999-10-29 2000-10-12 Anordnung zum passiven shimmen von magnetfeldern ATE359525T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9925513A GB2355800B (en) 1999-10-29 1999-10-29 Improved magnet

Publications (1)

Publication Number Publication Date
ATE359525T1 true ATE359525T1 (de) 2007-05-15

Family

ID=10863540

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00966326T ATE359525T1 (de) 1999-10-29 2000-10-12 Anordnung zum passiven shimmen von magnetfeldern

Country Status (7)

Country Link
US (1) US7071694B1 (de)
EP (1) EP1224484B1 (de)
JP (1) JP3662220B2 (de)
AT (1) ATE359525T1 (de)
DE (1) DE60034361D1 (de)
GB (2) GB2355800B (de)
WO (1) WO2001031359A1 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2355800B (en) * 1999-10-29 2004-10-27 Oxford Magnet Tech Improved magnet
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
DE60230561D1 (de) * 2001-05-17 2009-02-12 Mitsubishi Electric Corp Supraleitender Magnet für die bildgebende magnetische Resonanz
WO2003075757A1 (en) * 2002-03-14 2003-09-18 Hitachi, Ltd. Magnet device and magnetic resonance imaging using the same
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
US7423431B2 (en) * 2003-09-29 2008-09-09 General Electric Company Multiple ring polefaceless permanent magnet and method of making
DE102004007291B4 (de) 2004-02-14 2006-09-21 Bruker Biospin Gmbh Hybrid-Magnetanordnung
JP3733441B1 (ja) 2004-07-02 2006-01-11 株式会社日立製作所 磁気共鳴撮像装置及びその磁石装置
JP4541092B2 (ja) 2004-10-04 2010-09-08 株式会社日立製作所 磁気共鳴イメージング装置の超伝導磁石装置
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
JP4856430B2 (ja) * 2006-01-23 2012-01-18 株式会社日立製作所 電磁石装置
GB2436365B (en) * 2006-03-21 2008-04-02 Siemens Magnet Technology Ltd Apparatus and method for shimming the magnetic field generated by a magnet
CN100581455C (zh) * 2006-10-13 2010-01-20 Ge医疗系统环球技术有限公司 磁场产生装置和磁共振成像设备
JP4886482B2 (ja) * 2006-11-21 2012-02-29 株式会社日立製作所 超電導磁石装置及び核磁気共鳴イメージング装置
JP4921935B2 (ja) * 2006-11-22 2012-04-25 株式会社日立製作所 電磁石装置及び磁気共鳴撮像装置
JP5060151B2 (ja) * 2007-04-10 2012-10-31 株式会社日立製作所 磁場均一度調整装置、およびこれを用いた超伝導磁石装置、並びに磁気共鳴撮像装置
US20100219833A1 (en) * 2007-07-26 2010-09-02 Emscan Limited Magnet assembly
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
EP2511724B1 (de) * 2008-06-24 2019-03-13 Alberta Health Services Verfahren zur Bestimmung eines Magnetfeldes für ein Bildgebungsvolumen
CN102316798A (zh) * 2008-12-18 2012-01-11 古鲁姆·泰克勒马林 用于磁共振成像的小型非均匀永磁场发生器
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
US8866053B2 (en) * 2010-05-07 2014-10-21 Elberto Berdut-Teruel Permanent magnet induction heating system
GB201114045D0 (en) * 2011-08-15 2011-09-28 Emscan Ltd Magnet
JP5145451B2 (ja) * 2011-09-05 2013-02-20 株式会社日立製作所 電磁石装置及び磁気共鳴撮像装置
US10847294B2 (en) * 2017-07-10 2020-11-24 Aspect Imaging Ltd. System for generating a magnetic field
US10590594B2 (en) * 2017-11-28 2020-03-17 Elberto Berdut-Teruel Magnetic induction heating system and dehydrator
AU2019274404A1 (en) 2018-05-21 2020-11-12 Hyperfine Operations, Inc. B0 magnet methods and apparatus for a magnetic resonance imaging system

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000611A1 (en) * 1982-08-04 1984-02-16 William H Oldendorf Adjustable magnet suitable for in vivo nmr imaging and method of adjusting the same
JPS63241905A (ja) * 1987-03-27 1988-10-07 Sumitomo Special Metals Co Ltd 磁界発生装置
US4783628A (en) * 1987-08-14 1988-11-08 Houston Area Research Center Unitary superconducting electromagnet
US4822772A (en) * 1987-08-14 1989-04-18 Houston Area Research Center Electromagnet and method of forming same
US5134374A (en) * 1989-06-01 1992-07-28 Applied Superconetics Magnetic field control apparatus
US4943774A (en) * 1989-06-01 1990-07-24 General Atomics Magnetic field control apparatus
JPH03131234A (ja) * 1989-07-07 1991-06-04 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
US5061897A (en) * 1990-03-23 1991-10-29 Fonar Corporation Eddy current control in magnetic resonance imaging
US5124651A (en) * 1990-10-24 1992-06-23 Fonar Corporation Nuclear magnetic resonance scanners with composite pole facings
GB9302843D0 (en) * 1993-02-12 1993-03-31 Oxford Instr Uk Ltd Permanent magnet
FI105293B (fi) * 1993-06-08 2000-07-14 Picker Nordstar Oy Magneettikuvaukseen käytettävän magneetin napakenkä
DE69419096T2 (de) * 1993-09-29 1999-10-28 Oxford Magnet Technology Ltd., Eynsham Verbesserungen an Magneten der Bilderzeugung mittels magnetischer Resonanz
GB9320043D0 (en) * 1993-09-29 1993-11-17 Oxford Magnet Rechnology Limit Improvements in or relating to mri magnets
US5463364A (en) * 1994-04-13 1995-10-31 Bruker Analytische Messtechnik Gmbh Magnet system for NMR tomography
DE4424580C2 (de) * 1994-07-13 1996-09-05 Bruker Analytische Messtechnik NMR-Scheibenspule
JP3014319B2 (ja) * 1996-04-12 2000-02-28 信越化学工業株式会社 磁石対向型永久磁石回路
JP4039495B2 (ja) * 1998-04-14 2008-01-30 日立金属株式会社 Ｍｒｉ用磁界発生装置
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
US6150819A (en) * 1998-11-24 2000-11-21 General Electric Company Laminate tiles for an MRI system and method and apparatus for manufacturing the laminate tiles
GB2355800B (en) * 1999-10-29 2004-10-27 Oxford Magnet Tech Improved magnet

Also Published As

Publication number Publication date
GB2355800A (en) 2001-05-02
GB0415401D0 (en) 2004-08-11
US7071694B1 (en) 2006-07-04
EP1224484B1 (de) 2007-04-11
DE60034361D1 (de) 2007-05-24
GB2355800B (en) 2004-10-27
JP3662220B2 (ja) 2005-06-22
EP1224484A1 (de) 2002-07-24
JP2003513436A (ja) 2003-04-08
WO2001031359A1 (en) 2001-05-03
GB2400916B (en) 2004-12-29
GB9925513D0 (en) 1999-12-29
GB2400916A (en) 2004-10-27

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Legal Events

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