JP4369613B2 - 磁気共鳴イメージング装置 - Google Patents

磁気共鳴イメージング装置 Download PDF

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Publication number
JP4369613B2
JP4369613B2 JP2000352019A JP2000352019A JP4369613B2 JP 4369613 B2 JP4369613 B2 JP 4369613B2 JP 2000352019 A JP2000352019 A JP 2000352019A JP 2000352019 A JP2000352019 A JP 2000352019A JP 4369613 B2 JP4369613 B2 JP 4369613B2
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Japan
Prior art keywords
magnetic field
resonance imaging
imaging apparatus
magnetic resonance
gradient
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Expired - Fee Related
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JP2000352019A
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English (en)
Japanese (ja)
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JP2002153439A5 (enExample
JP2002153439A (ja
Inventor
弘隆 竹島
芳英 和田山
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Hitachi Healthcare Manufacturing Ltd
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Hitachi Medical Corp
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Priority to JP2000352019A priority Critical patent/JP4369613B2/ja
Priority to US09/992,356 priority patent/US6498488B2/en
Publication of JP2002153439A publication Critical patent/JP2002153439A/ja
Publication of JP2002153439A5 publication Critical patent/JP2002153439A5/ja
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Publication of JP4369613B2 publication Critical patent/JP4369613B2/ja
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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
    • G01R33/383—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
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP2000352019A 2000-11-20 2000-11-20 磁気共鳴イメージング装置 Expired - Fee Related JP4369613B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000352019A JP4369613B2 (ja) 2000-11-20 2000-11-20 磁気共鳴イメージング装置
US09/992,356 US6498488B2 (en) 2000-11-20 2001-11-13 Magnetic resonance imaging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000352019A JP4369613B2 (ja) 2000-11-20 2000-11-20 磁気共鳴イメージング装置

Publications (3)

Publication Number Publication Date
JP2002153439A JP2002153439A (ja) 2002-05-28
JP2002153439A5 JP2002153439A5 (enExample) 2006-06-01
JP4369613B2 true JP4369613B2 (ja) 2009-11-25

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Family Applications (1)

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JP2000352019A Expired - Fee Related JP4369613B2 (ja) 2000-11-20 2000-11-20 磁気共鳴イメージング装置

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US (1) US6498488B2 (enExample)
JP (1) JP4369613B2 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014519382A (ja) * 2011-05-31 2014-08-14 コーニンクレッカ フィリップス エヌ ヴェ Ｍｒｉ放射線治療装置の静磁場補正

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3987686B2 (ja) * 2001-02-02 2007-10-10 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 静磁界補正方法およびｍｒｉ装置
JP3878434B2 (ja) * 2001-05-10 2007-02-07 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 磁気共鳴撮像用コイル構造体および磁気共鳴撮像装置
JP4178020B2 (ja) * 2002-11-25 2008-11-12 株式会社日立製作所 磁気共鳴イメージング装置
US7375518B2 (en) 2003-10-15 2008-05-20 Hitachi Medical Corporation Structure for reducing noise in magnetic resonance imaging apparatus
US7755359B2 (en) * 2004-05-31 2010-07-13 Hitachi Medical Corporation Magnetic resonance imaging apparatus with noise suppressing structure
JP4639763B2 (ja) * 2004-11-12 2011-02-23 三菱電機株式会社 磁気共鳴イメージング装置
CN101563023B (zh) * 2006-12-20 2012-09-05 皇家飞利浦电子股份有限公司 用于影响和/或检测作用区域中的磁性粒子的布置和方法
CN102360691B (zh) 2011-06-24 2013-03-13 中国科学院电工研究所 一种带有铁环结构的开放式核磁共振磁体系统
DE102011089445B4 (de) * 2011-12-21 2015-11-05 Siemens Aktiengesellschaft Verfahren und Gradientensystem zur Reduzierung von mechanischen Schwingungen in einem Magnetresonanzbildgebungssystem
CN102590771A (zh) * 2012-03-07 2012-07-18 宁波健信机械有限公司 高开放度超导磁共振磁体上的磁场调节装置
JP6094233B2 (ja) * 2012-05-14 2017-03-15 住友電気工業株式会社 超電導マグネット
JP2015226728A (ja) * 2014-06-03 2015-12-17 株式会社日立メディコ 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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682111A (en) * 1985-03-05 1987-07-21 Kabushiki Kaisha Toshiba Magnetic resonance imaging magnet
EP0216590B2 (en) * 1985-09-20 2001-06-06 Btg International Limited Magnetic field screens
US5061897A (en) 1990-03-23 1991-10-29 Fonar Corporation Eddy current control in magnetic resonance imaging
FI105293B (fi) * 1993-06-08 2000-07-14 Picker Nordstar Oy Magneettikuvaukseen käytettävän magneetin napakenkä
US5672879A (en) * 1995-06-12 1997-09-30 Glavish; Hilton F. System and method for producing superimposed static and time-varying magnetic fields
GB9513544D0 (en) * 1995-07-04 1995-09-06 Marconi Gec Ltd Magnetic resonance methods and apparatus
JP3073933B2 (ja) 1996-08-05 2000-08-07 住友特殊金属株式会社 Ｍｒｉ用磁界発生装置
US6377048B1 (en) * 2000-11-08 2002-04-23 Topspin Medical (Israel) Limited Magnetic resonance imaging device for operation in external static magnetic fields

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014519382A (ja) * 2011-05-31 2014-08-14 コーニンクレッカ フィリップス エヌ ヴェ Ｍｒｉ放射線治療装置の静磁場補正

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Publication number Publication date
US20020060569A1 (en) 2002-05-23
US6498488B2 (en) 2002-12-24
JP2002153439A (ja) 2002-05-28

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