CN1892931B - Mri用超导磁铁 - Google Patents

Mri用超导磁铁 Download PDF

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Publication number
CN1892931B
CN1892931B CN2006100943129A CN200610094312A CN1892931B CN 1892931 B CN1892931 B CN 1892931B CN 2006100943129 A CN2006100943129 A CN 2006100943129A CN 200610094312 A CN200610094312 A CN 200610094312A CN 1892931 B CN1892931 B CN 1892931B
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CN
China
Prior art keywords
magnetic screen
mentioned
refrigerator
superconducting magnet
mri
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Expired - Fee Related
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CN2006100943129A
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English (en)
Chinese (zh)
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CN1892931A (zh
Inventor
根本武夫
安藤龙弥
渡边洋之
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Hitachi Ltd
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Hitachi Ltd
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Publication of CN1892931A publication Critical patent/CN1892931A/zh
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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
    • G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
    • G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
    • 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
    • G01R33/42—Screening
    • G01R33/421—Screening of main or gradient magnetic field

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Electromagnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
CN2006100943129A 2005-06-30 2006-06-29 Mri用超导磁铁 Expired - Fee Related CN1892931B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005190873 2005-06-30
JP2005190873A JP4404021B2 (ja) 2005-06-30 2005-06-30 Ｍｒｉ用超電導磁石
JP2005-190873 2005-06-30

Publications (2)

Publication Number Publication Date
CN1892931A CN1892931A (zh) 2007-01-10
CN1892931B true CN1892931B (zh) 2011-07-20

Family

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Family Applications (1)

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CN2006100943129A Expired - Fee Related CN1892931B (zh) 2005-06-30 2006-06-29 Mri用超导磁铁

Country Status (5)

Country Link
US (1) US7323963B2 (enExample)
EP (1) EP1739446B1 (enExample)
JP (1) JP4404021B2 (enExample)
CN (1) CN1892931B (enExample)
DE (1) DE602006002073D1 (enExample)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4833875B2 (ja) * 2007-01-23 2011-12-07 新日本製鐵株式会社 バルク酸化物超伝導材料を用いた磁石装置
JP4468388B2 (ja) * 2007-02-05 2010-05-26 株式会社日立製作所 磁場発生器
JP4542573B2 (ja) * 2007-08-07 2010-09-15 株式会社日立製作所 アクティブシールド型の超電導電磁石装置および磁気共鳴イメージング装置
US8464542B2 (en) * 2007-12-28 2013-06-18 D-Wave Systems Inc. Systems, methods, and apparatus for cryogenic refrigeration
US20090293505A1 (en) * 2008-05-29 2009-12-03 Cryomech, Inc. Low vibration liquid helium cryostat
CN102149992A (zh) * 2008-09-09 2011-08-10 皇家飞利浦电子股份有限公司 用于低温再凝结制冷的水平翅片式热交换器
CN102265419B (zh) * 2008-12-22 2015-07-01 皇家飞利浦电子股份有限公司 借助于填充液体或气体冷却剂的内部腔冷却的超导开关
CN101752050A (zh) * 2010-03-24 2010-06-23 哈尔滨工业大学 高温超导线圈的磁场屏蔽装置
JP5539022B2 (ja) * 2010-05-25 2014-07-02 三菱電機株式会社 伝導冷却超電導マグネット装置
CN102314988B (zh) * 2010-06-30 2014-05-07 通用电气公司 磁体组件及其温控方法
CN102136337B (zh) * 2010-12-08 2012-03-28 中国科学院电工研究所 高磁场高均匀度核磁共振超导磁体系统
GB2503460B (en) * 2012-06-26 2014-08-13 Siemens Plc Method and apparatus for reduction of gradient coil vibration in MRI systems
DE112012006734B4 (de) 2012-07-26 2024-11-07 Sumitomo (Shi) Cryogenics Of America, Inc. Brayton-Kreismotor
WO2014109941A1 (en) 2013-01-11 2014-07-17 Sumitomo (Shi) Cryogenics Of America, Inc. Mri cool down apparatus
CN105745554B (zh) 2013-11-22 2020-05-22 皇家飞利浦有限公司 对动态汽化减少改进的低温容器、超导磁体和mr检查系统
US10378803B2 (en) 2014-08-08 2019-08-13 D-Wave Systems Inc. Systems and methods for electrostatic trapping of contaminants in cryogenic refrigeration systems
CN104319056B (zh) * 2014-10-22 2016-07-06 杭州富士达特种材料股份有限公司 一种低温超导磁场的冷却装置的热屏蔽结构
WO2016092417A1 (en) 2014-12-12 2016-06-16 Koninklijke Philips N.V. System and method for maintaining vacuum in superconducting magnet system in event of a loss of cooling
US11137181B2 (en) 2015-06-03 2021-10-05 Sumitomo (Shi) Cryogenic Of America, Inc. Gas balanced engine with buffer
WO2018052414A1 (en) 2016-09-14 2018-03-22 Google Llc Reducing dissipation and frequency noise in quantum devices using a local vacuum cavity
JP6792990B2 (ja) * 2016-10-03 2020-12-02 住友重機械工業株式会社 極低温冷凍機
JP6400262B1 (ja) * 2017-03-30 2018-10-03 住友重機械工業株式会社 極低温冷凍機および磁気シールド
JP6901622B2 (ja) * 2017-07-17 2021-07-14 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． コールドヘッドの熱経路が熱交換器により冷却される超電導磁石
CN107993788B (zh) * 2017-12-15 2020-05-19 上海联影医疗科技有限公司 超导磁体系统、其控制方法、其制造方法及磁共振系统
CN108022711B (zh) 2018-01-02 2020-06-12 中国科学院电工研究所 一种智能化磁共振全身成像超导磁体系统
WO2019194815A1 (en) * 2018-04-06 2019-10-10 General Electric Company Superconducting magnet apparatus and method of operating same
GB2586821B (en) * 2019-09-04 2022-04-13 Siemens Healthcare Ltd Current leads for superconducting magnets
WO2021176604A1 (ja) 2020-03-04 2021-09-10 三菱電機株式会社 超電導電磁石装置
GB2616318B (en) 2022-05-16 2024-05-15 Oxford Instruments Nanotechnology Tools Ltd Cryogenic cooling system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4968961A (en) * 1987-08-26 1990-11-06 Hitachi, Ltd. Superconducting magnet assembly with suppressed leakage magnetic field
US5018359A (en) * 1989-06-30 1991-05-28 Mitsubishi Denki Kabushiki Kaisha Cryogenic refrigeration apparatus

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63187606A (ja) * 1987-01-30 1988-08-03 Fuji Electric Co Ltd 極低温容器
US4959964A (en) * 1988-09-16 1990-10-02 Hitachi, Ltd. Cryostat with refrigerator containing superconductive magnet
US5092130A (en) * 1988-11-09 1992-03-03 Mitsubishi Denki Kabushiki Kaisha Multi-stage cold accumulation type refrigerator and cooling device including the same
JPH02195937A (ja) * 1989-01-26 1990-08-02 Toshiba Corp 磁気共鳴イメージング装置用静磁界磁石
US5280247A (en) * 1992-03-27 1994-01-18 Picker International, Inc. Filamentary cold shield for superconducting magnets
US5289128A (en) * 1992-03-27 1994-02-22 Picker International, Inc. Superconducting gradient shield coils
US4986077A (en) * 1989-06-21 1991-01-22 Hitachi, Ltd. Cryostat with cryo-cooler
JP3233974B2 (ja) * 1992-04-09 2001-12-04 株式会社東芝 Ｍｒｉ用高周波磁界シールド
JPH07142237A (ja) * 1993-11-22 1995-06-02 Toshiba Corp 超電導磁石装置
JP3761215B2 (ja) * 1994-05-25 2006-03-29 株式会社東芝 超電導磁石
JP2907012B2 (ja) * 1994-08-08 1999-06-21 三菱電機株式会社 超電導マグネット装置
US5517169A (en) * 1994-10-17 1996-05-14 General Electric Company Superconducting magnet with magnetic shielding
US5571602A (en) * 1994-12-29 1996-11-05 General Electric Company Superconducting joints for superconducting sheets
US5633587A (en) * 1995-02-14 1997-05-27 Kabushiki Kaisha Toshiba Magnetostatic field generating magnet for use in an MRI system having an active magnetic shield
US5701744A (en) * 1996-10-31 1997-12-30 General Electric Company Magnetic resonance imager with helium recondensing
JP3871789B2 (ja) * 1997-12-01 2007-01-24 株式会社日立メディコ パッシブシールド型超電導磁石
JP3939489B2 (ja) * 2000-08-28 2007-07-04 株式会社日立メディコ 磁石装置およびこれを用いた磁気共鳴イメージング装置
JP4186636B2 (ja) * 2003-01-30 2008-11-26 株式会社日立製作所 超電導磁石
JP2004235653A (ja) 2004-02-09 2004-08-19 Mitsubishi Electric Corp 超電導マグネット
US7500366B2 (en) * 2005-12-08 2009-03-10 Shi-Apd Cryogencis, Inc. Refrigerator with magnetic shield

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4968961A (en) * 1987-08-26 1990-11-06 Hitachi, Ltd. Superconducting magnet assembly with suppressed leakage magnetic field
US5018359A (en) * 1989-06-30 1991-05-28 Mitsubishi Denki Kabushiki Kaisha Cryogenic refrigeration apparatus

Also Published As

Publication number Publication date
DE602006002073D1 (de) 2008-09-18
JP4404021B2 (ja) 2010-01-27
EP1739446A1 (en) 2007-01-03
US20070001792A1 (en) 2007-01-04
CN1892931A (zh) 2007-01-10
US7323963B2 (en) 2008-01-29
EP1739446B1 (en) 2008-08-06
JP2007007111A (ja) 2007-01-18

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Granted publication date: 20110720

Termination date: 20180629