DE69101923D1 - Permanentmagnet für vorrichtung zur bilderzeugung mit magnetischer kernresonanz. - Google Patents

Permanentmagnet für vorrichtung zur bilderzeugung mit magnetischer kernresonanz.

Info

Publication number
DE69101923D1
DE69101923D1 DE69101923T DE69101923T DE69101923D1 DE 69101923 D1 DE69101923 D1 DE 69101923D1 DE 69101923 T DE69101923 T DE 69101923T DE 69101923 T DE69101923 T DE 69101923T DE 69101923 D1 DE69101923 D1 DE 69101923D1
Authority
DE
Germany
Prior art keywords
permanent magnet
magnetic core
image generation
core resonance
resonance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69101923T
Other languages
English (en)
Other versions
DE69101923T2 (de
Inventor
Guy Aubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of DE69101923D1 publication Critical patent/DE69101923D1/de
Application granted granted Critical
Publication of DE69101923T2 publication Critical patent/DE69101923T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69101923T 1990-07-30 1991-07-25 Permanentmagnet für vorrichtung zur bilderzeugung mit magnetischer kernresonanz. Expired - Fee Related DE69101923T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009698A FR2665297B1 (fr) 1990-07-30 1990-07-30 Aimant permanent pour installation d'imagerie par resonance magnetique nucleaire.
PCT/FR1991/000617 WO1992002827A1 (fr) 1990-07-30 1991-07-25 Aimant permanent pour installation d'imagerie par resonance magnetique nucleaire

Publications (2)

Publication Number Publication Date
DE69101923D1 true DE69101923D1 (de) 1994-06-09
DE69101923T2 DE69101923T2 (de) 1994-12-15

Family

ID=9399228

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69101923T Expired - Fee Related DE69101923T2 (de) 1990-07-30 1991-07-25 Permanentmagnet für vorrichtung zur bilderzeugung mit magnetischer kernresonanz.

Country Status (6)

Country Link
US (1) US5332971A (de)
EP (1) EP0541653B1 (de)
JP (1) JP2839114B2 (de)
DE (1) DE69101923T2 (de)
FR (1) FR2665297B1 (de)
WO (1) WO1992002827A1 (de)

Families Citing this family (39)

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US5603318A (en) 1992-04-21 1997-02-18 University Of Utah Research Foundation Apparatus and method for photogrammetric surgical localization
WO1994024933A1 (en) 1993-04-26 1994-11-10 St. Louis University Indicating the position of a surgical probe
JP3675010B2 (ja) * 1995-02-17 2005-07-27 セイコーエプソン株式会社 超電導軸受装置
US6211589B1 (en) * 1995-06-07 2001-04-03 The Boeing Company Magnetic systems for energy storage flywheels
US5659250A (en) * 1996-03-19 1997-08-19 Intermagnetics General Corporation Full brick construction of magnet assembly having a central bore
US5900793A (en) * 1997-07-23 1999-05-04 Odin Technologies Ltd Permanent magnet assemblies for use in medical applications
US6150911A (en) * 1996-07-24 2000-11-21 Odin Technologies Ltd. Yoked permanent magnet assemblies for use in medical applications
JP3699789B2 (ja) * 1996-09-20 2005-09-28 株式会社日立製作所 超電導磁石装置
IL119558A (en) 1996-11-04 2005-11-20 Odin Technologies Ltd Multi-probe mri/mrt system
US6411187B1 (en) 1997-07-23 2002-06-25 Odin Medical Technologies, Ltd. Adjustable hybrid magnetic apparatus
US6157278A (en) * 1997-07-23 2000-12-05 Odin Technologies Ltd. Hybrid magnetic apparatus for use in medical applications
AU9364698A (en) * 1997-09-25 1999-04-12 Odin Technologies Ltd. Magnetic apparatus for mri
US7268553B1 (en) 1997-11-26 2007-09-11 Fonar Corporation Method and apparatus for magnetic resonance imaging
EP1058933A4 (de) * 1998-02-09 2006-03-01 Odin Medical Technologies Ltd Konstruktionsverfahren von offenen magneten und offene magnetvorrichtung für mri/mrt sensoren
US6474341B1 (en) 1999-10-28 2002-11-05 Surgical Navigation Technologies, Inc. Surgical communication and power system
US6320488B1 (en) * 2000-07-31 2001-11-20 The United States Of America As Represented By The Secretary Of The Army Magic cylinder adjustable in field strength
US6662434B2 (en) 2001-04-03 2003-12-16 General Electric Company Method and apparatus for magnetizing a permanent magnet
US6518867B2 (en) 2001-04-03 2003-02-11 General Electric Company Permanent magnet assembly and method of making thereof
US7215231B1 (en) * 2002-08-16 2007-05-08 Fonar Corporation MRI system
US7423431B2 (en) 2003-09-29 2008-09-09 General Electric Company Multiple ring polefaceless permanent magnet and method of making
US7148689B2 (en) 2003-09-29 2006-12-12 General Electric Company Permanent magnet assembly with movable permanent body for main magnetic field adjustable
CN100415162C (zh) * 2005-03-09 2008-09-03 Ge医疗系统环球技术有限公司 磁体系统和磁共振成像系统
US20070018764A1 (en) * 2005-07-19 2007-01-25 Analisi Tecnologica Innovadora Per A Processos Device and method for separating magnetic particles
DE102007031745B4 (de) * 2007-07-06 2013-04-25 Max Baermann Gmbh Magnetsystem zur Erzeugung homogener Magnetfelder
CN202794554U (zh) 2009-04-21 2013-03-13 艾斯拜克特磁铁技术有限公司 具有实心面板和扫描磁头的永磁体设备
FR2949601A1 (fr) 2009-08-28 2011-03-04 Commissariat Energie Atomique Dispositif d'aimant permanent cylindrique a champ magnetique induit d'orientation predeterminee et procede de fabrication
FR2949604B1 (fr) 2009-08-28 2012-03-02 Commissariat Energie Atomique Structure aimantee axisymetrique induisant en son centre un champ homogene d'orientation predeterminee
FR2949602A1 (fr) 2009-08-28 2011-03-04 Commissariat Energie Atomique Dispositif d'aimant permanent cylindrique produisant un champ magnetique controle a une distance de sa surface
FR2962846B1 (fr) * 2010-07-16 2014-10-17 Commissariat Energie Atomique Dispositif d'aimant permanent de creation d'un champ magnetique homogene deporte
CN102426897B (zh) * 2011-12-20 2013-01-23 重庆大学 一种半椭圆分布的开放式核磁共振永磁体结构
DE102016203588A1 (de) * 2016-03-04 2017-09-07 Bruker Biospin Gmbh Streufeldarme Permanentmagnetanordnung für MR-Apparaturen
US10485089B2 (en) * 2017-09-07 2019-11-19 National Synchrotron Radiation Research Center Helical permanent magnet structure and undulator using the same
US11075027B1 (en) 2018-07-03 2021-07-27 Q Magnetics, LLC Permanent magnet for generating homogenous and intense magnetic field
WO2020050776A1 (en) * 2018-09-03 2020-03-12 Singapore University Of Technology And Design Permanent magnet system and method of forming thereof
AU2019387628A1 (en) 2018-11-29 2021-07-22 Epsitau Ltd. Lightweight asymmetric magnet arrays
US10867733B2 (en) 2018-11-29 2020-12-15 Epsitau Ltd. Lightweight asymmetric magnet arrays with mixed-phase magnet rings
CA3121698A1 (en) 2018-11-29 2020-06-04 Epsitau Ltd. Lightweight asymmetric magnet arrays with theta magnet rings
CN114184990B (zh) * 2021-11-29 2024-01-05 深圳航天科技创新研究院 磁共振成像用的磁体及铁轭的优化方法
WO2023205771A2 (en) * 2022-04-21 2023-10-26 The General Hospital Corporation System and method for hybrid magnet design for magnetic resonance imaging systems

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580098A (en) * 1983-05-02 1986-04-01 E. I. Du Pont De Nemours And Company Permanent magnet NMR imaging apparatus
US4538130A (en) * 1984-04-23 1985-08-27 Field Effects, Inc. Tunable segmented ring magnet and method of manufacture
EP0167639A1 (de) * 1984-06-28 1986-01-15 E.I. Du Pont De Nemours And Company Dauermagnet für einen Bilderzeugungsapparat mittels magnetischer Kernresonanz
JPS63190311A (ja) * 1986-10-03 1988-08-05 Hitachi Ltd 永久磁石式磁場発生装置
FR2605452B1 (fr) * 1986-10-17 1988-12-02 Thomson Cgr Aimant permanent spherique a acces equatorial
FR2605451B1 (fr) * 1986-10-17 1993-12-24 Thomson Cgr Aimant permanent cylindrique a champ induit longitudinal
FR2605450B1 (fr) * 1986-10-17 1988-12-02 Thomson Cgr Aimant permanent cylindrique pour produire un champ d'induction uniforme et transverse
US4829277A (en) * 1986-11-20 1989-05-09 General Motors Corporation Isotropic rare earth-iron field magnets for magnetic resonance imaging
FR2642236B1 (fr) * 1989-01-24 1996-04-19 Roulements Soc Nouvelle Anneau magnetique multipolaire
US4893103A (en) * 1989-02-24 1990-01-09 The United States Of America As Represented By The Secretary Of The Army Superconducting PYX structures
JPH02260347A (ja) * 1989-03-30 1990-10-23 Mitsubishi Electric Corp コアおよび接点集合体
US5134374A (en) * 1989-06-01 1992-07-28 Applied Superconetics Magnetic field control apparatus
US4994778A (en) * 1989-11-14 1991-02-19 The United States Of America As Represented By The Secretary Of The Army Adjustable twister
DE69128758T2 (de) * 1990-10-04 1998-05-14 Shinetsu Chemical Co Zylindrische Magnetanordnung geeignet für die Bilderzeugung mittels magnetischer Kernresonanz
US5103200A (en) * 1991-06-03 1992-04-07 The United States Of America As Represented By The Secretary Of The Army High-field, permanent magnet flux source
US5099217A (en) * 1991-09-16 1992-03-24 The United States Of America As Represented By The Secretary Of The Army Constant gap cladded twister

Also Published As

Publication number Publication date
JPH06505124A (ja) 1994-06-09
EP0541653A1 (de) 1993-05-19
JP2839114B2 (ja) 1998-12-16
FR2665297B1 (fr) 1992-10-09
US5332971A (en) 1994-07-26
EP0541653B1 (de) 1994-05-04
DE69101923T2 (de) 1994-12-15
WO1992002827A1 (fr) 1992-02-20
FR2665297A1 (fr) 1992-01-31

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: DERZEIT KEIN VERTRETER BESTELLT

8339 Ceased/non-payment of the annual fee