CN1606100B - 磁性材料、无源垫片和磁共振成像系统 - Google Patents

磁性材料、无源垫片和磁共振成像系统 Download PDF

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Publication number
CN1606100B
CN1606100B CN200410085232.8A CN200410085232A CN1606100B CN 1606100 B CN1606100 B CN 1606100B CN 200410085232 A CN200410085232 A CN 200410085232A CN 1606100 B CN1606100 B CN 1606100B
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China
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temperature
magnetization
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ferrimagnetic
ferromagnetic
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Expired - Fee Related
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CN200410085232.8A
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English (en)
Chinese (zh)
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CN1606100A (zh
Inventor
I·S·雅各布斯
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General Electric Co
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General Electric Co
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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together bonded together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0266—Moulding; Pressing

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Hard Magnetic Materials (AREA)
CN200410085232.8A 2003-10-10 2004-10-10 磁性材料、无源垫片和磁共振成像系统 Expired - Fee Related CN1606100B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/682,114 US6906606B2 (en) 2003-10-10 2003-10-10 Magnetic materials, passive shims and magnetic resonance imaging systems
US10/682114 2003-10-10
US10/682,114 2003-10-10

Publications (2)

Publication Number Publication Date
CN1606100A CN1606100A (zh) 2005-04-13
CN1606100B true CN1606100B (zh) 2013-04-17

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Family Applications (1)

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CN200410085232.8A Expired - Fee Related CN1606100B (zh) 2003-10-10 2004-10-10 磁性材料、无源垫片和磁共振成像系统

Country Status (5)

Country Link
US (1) US6906606B2 (enExample)
EP (1) EP1523016B1 (enExample)
JP (1) JP4726458B2 (enExample)
CN (1) CN1606100B (enExample)
DE (1) DE602004021462D1 (enExample)

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WO2005037101A1 (ja) * 2003-10-15 2005-04-28 Hitachi Medical Corporation 磁気共鳴イメージング装置
US7224167B2 (en) * 2004-11-30 2007-05-29 General Electric Company Magnetic field generating apparatus and method for magnetic resonance imaging
CN101278249B (zh) * 2005-09-29 2010-05-19 Abb研究有限公司 用于控制磁通量的方法与设备
CA2627675A1 (en) * 2005-10-28 2007-05-03 University Of Victoria Innovation And Development Corporation Shimmed active magnetic regenerator for use in thermodynamic devices
JP5203682B2 (ja) * 2007-02-13 2013-06-05 株式会社東芝 Ｍｒｉ装置、ｎｍｒ分析装置および静磁場発生部
US7753165B2 (en) * 2007-12-21 2010-07-13 Robert Bosch Gmbh Device and method for active noise cancellation in exhaust gas channel of a combustion engine
GB0803358D0 (en) * 2008-02-25 2008-04-02 Siemens Magnet Technology Ltd Method and apparatus for shimming a magnet
JP5170540B2 (ja) * 2008-04-24 2013-03-27 株式会社日立メディコ 磁気共鳴イメージング装置
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
AU2010273298B2 (en) * 2009-07-15 2014-10-23 Viewray Technologies, Inc. Method and apparatus for shielding a linear accelerator and a magnetic resonance imaging device from each other
TWI403682B (zh) * 2009-09-17 2013-08-01 Delta Electronics Inc 磁製冷結構
WO2011122403A1 (ja) * 2010-03-30 2011-10-06 ジャパンスーパーコンダクタテクノロジー株式会社 超電導マグネット装置
JP5443276B2 (ja) * 2010-06-10 2014-03-19 ジャパンスーパーコンダクタテクノロジー株式会社 超電導磁石装置
DE102010013890A1 (de) * 2010-04-07 2011-10-13 Siemens Aktiengesellschaft Verfahren und Shim-Massen-Positionsbestimmungsgerät zur Ermittlung einer Shim-Massen-Anordnung
US8604793B2 (en) 2010-10-21 2013-12-10 General Electric Company Superconducting magnet having cold iron shimming capability
CN103713269A (zh) * 2012-09-29 2014-04-09 西门子(深圳)磁共振有限公司 用于磁体的匀场片、匀场条以及磁体和磁共振系统
US9889318B2 (en) 2012-10-26 2018-02-13 Viewray Technologies, Inc. Assessment and improvement of treatment using imaging of physiological responses to radiation therapy
GB2511048B (en) 2013-02-20 2016-05-25 Siemens Healthcare Ltd Methods and apparatus for compensating for drift in magnetic field strength in superconducting magnets
US9446263B2 (en) 2013-03-15 2016-09-20 Viewray Technologies, Inc. Systems and methods for linear accelerator radiotherapy with magnetic resonance imaging
EP3423153B1 (en) 2016-03-02 2021-05-19 ViewRay Technologies, Inc. Particle therapy with magnetic resonance imaging
CA3123142A1 (en) * 2016-03-22 2017-09-28 Hyperfine Research, Inc. Methods and apparatus for magnetic field shimming
DE102017217700A1 (de) * 2017-10-05 2019-04-11 Robert Bosch Gmbh Magnetanordnung sowie Kernspinresonanz-Vorrichtung
JP7127126B2 (ja) 2017-12-06 2022-08-29 ビューレイ・テクノロジーズ・インコーポレイテッド 放射線治療のシステム、方法およびソフトウェア
EP3553547A1 (en) 2018-04-12 2019-10-16 Koninklijke Philips N.V. Shim irons for a magnetic resonance apparatus

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0932055A2 (en) * 1998-01-21 1999-07-28 Oxford Instruments Limited NMR sensor

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JPH03181104A (ja) * 1989-12-11 1991-08-07 Kanetsukusu:Kk プラスチックボンデット磁石
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EP0932055A2 (en) * 1998-01-21 1999-07-28 Oxford Instruments Limited NMR sensor

Also Published As

Publication number Publication date
EP1523016B1 (en) 2009-06-10
CN1606100A (zh) 2005-04-13
DE602004021462D1 (de) 2009-07-23
US6906606B2 (en) 2005-06-14
JP2005118559A (ja) 2005-05-12
US20050077899A1 (en) 2005-04-14
JP4726458B2 (ja) 2011-07-20
EP1523016A1 (en) 2005-04-13

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