JP4783556B2 - Ｍｒｉ用磁場生成器の中心磁場を調節するための方法及び装置 - Google Patents

Ｍｒｉ用磁場生成器の中心磁場を調節するための方法及び装置 Download PDF

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JP4783556B2
JP4783556B2 JP2004109822A JP2004109822A JP4783556B2 JP 4783556 B2 JP4783556 B2 JP 4783556B2 JP 2004109822 A JP2004109822 A JP 2004109822A JP 2004109822 A JP2004109822 A JP 2004109822A JP 4783556 B2 JP4783556 B2 JP 4783556B2
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magnetic field
yoke
central
magnet
blocks
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JP2004305744A5 (enExample
JP2004305744A (ja
Inventor
チンファー・ファン
ブー−シン・スー
ウェイジュン・シェン
ロナルド・フロイド・ロッホナー
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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)
JP2004109822A 2003-04-04 2004-04-02 Ｍｒｉ用磁場生成器の中心磁場を調節するための方法及び装置 Expired - Fee Related JP4783556B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/407,887 US6844801B2 (en) 2003-03-21 2003-04-04 Methods and apparatus for adjusting center magnetic field of a magnetic field generator for MRI
US10/407,887 2003-04-04

Publications (3)

Publication Number Publication Date
JP2004305744A JP2004305744A (ja) 2004-11-04
JP2004305744A5 JP2004305744A5 (enExample) 2007-05-17
JP4783556B2 true JP4783556B2 (ja) 2011-09-28

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JP2004109822A Expired - Fee Related JP4783556B2 (ja) 2003-04-04 2004-04-02 Ｍｒｉ用磁場生成器の中心磁場を調節するための方法及び装置

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US (1) US6844801B2 (enExample)
EP (1) EP1467220A3 (enExample)
JP (1) JP4783556B2 (enExample)
CN (1) CN100536769C (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7733090B2 (en) * 2004-07-01 2010-06-08 Hitachi Metals, Ltd. Magnetic field generator
US20070285197A1 (en) * 2006-06-08 2007-12-13 General Electric Company Method for disassembling a magnetic field generator
WO2009061481A1 (en) 2007-11-06 2009-05-14 T2 Biosystems, Inc. Small magnet and rf coil for magnetic resonance relaxometry
AU2010327289B2 (en) * 2009-12-02 2015-05-28 Nanalysis Corp. Method and apparatus for producing homogeneous magnetic fields
CN106556813B (zh) * 2016-11-25 2021-09-24 上海辰光医疗科技股份有限公司 一种磁共振系统中主动匀场线圈的线性混合优化方法
JP6929667B2 (ja) * 2017-03-10 2021-09-01 キヤノンメディカルシステムズ株式会社 磁気共鳴イメージング装置及び静磁場補正方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60189905A (ja) * 1984-03-09 1985-09-27 Mitsubishi Electric Corp 高均一磁界発生装置
JPH01283905A (ja) * 1988-05-11 1989-11-15 Hitachi Medical Corp Ｍｒｉ装置用均一磁場の偏位方法及びそれを用いた静磁場発生装置
JPH03131234A (ja) * 1989-07-07 1991-06-04 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
JPH0394732A (ja) * 1989-09-08 1991-04-19 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
JPH05152120A (ja) * 1991-11-29 1993-06-18 Shin Etsu Chem Co Ltd 磁場発生装置及び磁場均一度調整方法
US5668516A (en) 1995-12-29 1997-09-16 General Electric Company Simplified active shield superconducting magnet assembly for magnetic resonance imaging
JP3705861B2 (ja) * 1996-03-21 2005-10-12 株式会社日立メディコ 超電導磁石装置及びその着磁調整方法
JP2953659B1 (ja) * 1998-08-06 1999-09-27 住友特殊金属株式会社 Ｍｒｉ用磁界発生装置およびその組立方法並びにそれに用いる磁石ユニットの組立方法
US6358582B1 (en) 1998-11-19 2002-03-19 General Electric Company Laminated composite shell assembly for magnet applications
US5999076A (en) 1998-12-30 1999-12-07 General Electric Company Magnetic resonance imaging passively shimmed superconducting magnet assembly
KR100319923B1 (ko) * 1999-05-10 2002-01-09 윤종용 자기공명영상장치용 자기장 발생 장치
JP4123649B2 (ja) * 1999-08-12 2008-07-23 日立金属株式会社 磁界発生装置およびその組立方法
US6252405B1 (en) 1999-11-15 2001-06-26 General Electric Company Temperature compensated NMR magnet and method of operation therefor
EP1102077B1 (en) * 1999-11-16 2006-03-08 Neomax Co., Ltd. Pole-piece unit for an MRI magnet
JP3559262B2 (ja) * 2000-10-06 2004-08-25 株式会社Ｎｅｏｍａｘ 磁界調整用装置、磁界調整方法および記録媒体
JP4338166B2 (ja) * 2001-03-13 2009-10-07 信越化学工業株式会社 Ｍｒｉ用磁場発生装置
US6504461B2 (en) 2001-03-26 2003-01-07 General Electric Company Open magnet with recessed field shaping coils
JP2003024296A (ja) * 2001-07-04 2003-01-28 Ge Medical Systems Global Technology Co Llc 静磁界調整方法およびｍｒｉ装置

Also Published As

Publication number Publication date
EP1467220A3 (en) 2005-10-26
US20040196126A1 (en) 2004-10-07
EP1467220A2 (en) 2004-10-13
CN1535654A (zh) 2004-10-13
US6844801B2 (en) 2005-01-18
CN100536769C (zh) 2009-09-09
JP2004305744A (ja) 2004-11-04

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