JP4404021B2 - Ｍｒｉ用超電導磁石 - Google Patents

Ｍｒｉ用超電導磁石 Download PDF

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Publication number
JP4404021B2
JP4404021B2 JP2005190873A JP2005190873A JP4404021B2 JP 4404021 B2 JP4404021 B2 JP 4404021B2 JP 2005190873 A JP2005190873 A JP 2005190873A JP 2005190873 A JP2005190873 A JP 2005190873A JP 4404021 B2 JP4404021 B2 JP 4404021B2
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Japan
Prior art keywords
superconducting magnet
mri
refrigerator
magnetic shield
superconducting
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Expired - Fee Related
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JP2005190873A
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English (en)
Japanese (ja)
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JP2007007111A5 (enExample
JP2007007111A (ja
Inventor
武夫 根本
竜弥 安藤
洋之 渡邊
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Hitachi Ltd
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Hitachi Ltd
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Priority to JP2005190873A priority Critical patent/JP4404021B2/ja
Priority to DE602006002073T priority patent/DE602006002073D1/de
Priority to EP06253271A priority patent/EP1739446B1/en
Priority to US11/476,700 priority patent/US7323963B2/en
Priority to CN2006100943129A priority patent/CN1892931B/zh
Publication of JP2007007111A publication Critical patent/JP2007007111A/ja
Publication of JP2007007111A5 publication Critical patent/JP2007007111A5/ja
Application granted granted Critical
Publication of JP4404021B2 publication Critical patent/JP4404021B2/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
    • G01R33/381—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)
JP2005190873A 2005-06-30 2005-06-30 Ｍｒｉ用超電導磁石 Expired - Fee Related JP4404021B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2005190873A JP4404021B2 (ja) 2005-06-30 2005-06-30 Ｍｒｉ用超電導磁石
DE602006002073T DE602006002073D1 (de) 2005-06-30 2006-06-23 Supraleitender Magnet für Kerspintomographie
EP06253271A EP1739446B1 (en) 2005-06-30 2006-06-23 A MRI superconductive magnet
US11/476,700 US7323963B2 (en) 2005-06-30 2006-06-29 MRI superconductive magnet
CN2006100943129A CN1892931B (zh) 2005-06-30 2006-06-29 Mri用超导磁铁

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
JP2007007111A JP2007007111A (ja) 2007-01-18
JP2007007111A5 JP2007007111A5 (enExample) 2007-08-02
JP4404021B2 true JP4404021B2 (ja) 2010-01-27

Family

ID=37084635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005190873A Expired - Fee Related JP4404021B2 (ja) 2005-06-30 2005-06-30 Ｍｒｉ用超電導磁石

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)

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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

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JPS63187606A (ja) * 1987-01-30 1988-08-03 Fuji Electric Co Ltd 極低温容器
JPS6454714A (en) * 1987-08-26 1989-03-02 Hitachi Ltd Active shield type superconducting magnet device
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
JPH0334404A (ja) * 1989-06-30 1991-02-14 Mitsubishi Electric Corp 極低温冷凍装置
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

Also Published As

Publication number Publication date
DE602006002073D1 (de) 2008-09-18
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
CN1892931B (zh) 2011-07-20

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