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DE3779715D1 - Vorrichtung zur erzeugung eines magnetfeldes fuer rechnergesteuerte tomographie mittels magnetischer kernresonanz. - Google Patents

Vorrichtung zur erzeugung eines magnetfeldes fuer rechnergesteuerte tomographie mittels magnetischer kernresonanz.

Info

Publication number
DE3779715D1
DE3779715D1 DE8787308518T DE3779715T DE3779715D1 DE 3779715 D1 DE3779715 D1 DE 3779715D1 DE 8787308518 T DE8787308518 T DE 8787308518T DE 3779715 T DE3779715 T DE 3779715T DE 3779715 D1 DE3779715 D1 DE 3779715D1
Authority
DE
Germany
Prior art keywords
generating
computer
magnetic field
magnetic core
core 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 - Lifetime
Application number
DE8787308518T
Other languages
English (en)
Other versions
DE3779715T2 (de
Inventor
Hirofumi Yamazaki Takabayashi
Hideya Yamazaki Seisak Sakurai
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.)
Proterial Ltd
Original Assignee
Sumitomo Special Metals Co Ltd
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
Priority claimed from JP14797886U external-priority patent/JPH0314011Y2/ja
Priority claimed from JP14797986U external-priority patent/JPH0314012Y2/ja
Application filed by Sumitomo Special Metals Co Ltd filed Critical Sumitomo Special Metals Co Ltd
Application granted granted Critical
Publication of DE3779715D1 publication Critical patent/DE3779715D1/de
Publication of DE3779715T2 publication Critical patent/DE3779715T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type 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
    • G01R33/28—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)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE8787308518T 1986-09-27 1987-09-25 Vorrichtung zur erzeugung eines magnetfeldes fuer rechnergesteuerte tomographie mittels magnetischer kernresonanz. Expired - Lifetime DE3779715T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14797886U JPH0314011Y2 (de) 1986-09-27 1986-09-27
JP14797986U JPH0314012Y2 (de) 1986-09-27 1986-09-27

Publications (2)

Publication Number Publication Date
DE3779715D1 true DE3779715D1 (de) 1992-07-16
DE3779715T2 DE3779715T2 (de) 1993-01-28

Family

ID=26478353

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787308518T Expired - Lifetime DE3779715T2 (de) 1986-09-27 1987-09-25 Vorrichtung zur erzeugung eines magnetfeldes fuer rechnergesteuerte tomographie mittels magnetischer kernresonanz.

Country Status (3)

Country Link
US (1) US4777464A (de)
EP (1) EP0262880B1 (de)
DE (1) DE3779715T2 (de)

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FR2611975B1 (fr) * 1987-03-03 1995-02-17 Commissariat Energie Atomique Systeme d'aimants permanents pour un champ magnetique intense
US5063934A (en) * 1987-10-07 1991-11-12 Advanced Techtronics, Inc. Permanent magnet arrangement
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US5207224A (en) * 1988-12-09 1993-05-04 Picker International, Ltd. Magnetic resonance apparatus
JPH03131234A (ja) * 1989-07-07 1991-06-04 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
JP2533758Y2 (ja) * 1989-12-13 1997-04-23 信越化学工業 株式会社 磁場発生装置
US5131392A (en) * 1990-02-13 1992-07-21 Brigham & Women's Hospital Use of magnetic field of magnetic resonance imaging devices as the source of the magnetic field of electromagnetic transducers
DE69128758T2 (de) * 1990-10-04 1998-05-14 Shinetsu Chemical Co Zylindrische Magnetanordnung geeignet für die Bilderzeugung mittels magnetischer Kernresonanz
DE69131940T2 (de) * 1991-11-15 2000-08-17 Hitachi Medical Corp., Tokio/Tokyo Apparat zur Erzeugung von Magnetfeldern für die Bildgebung mittels magnetischer Resonanz
JP2767659B2 (ja) * 1991-12-17 1998-06-18 信越化学工業株式会社 磁場発生装置
US6023165A (en) 1992-09-28 2000-02-08 Fonar Corporation Nuclear magnetic resonance apparatus and methods of use and facilities for incorporating the same
US6335623B1 (en) 1992-12-18 2002-01-01 Fonar Corporation MRI apparatus
US6201394B1 (en) 1992-12-18 2001-03-13 Fonar Corporation MRI apparatus
JP3266355B2 (ja) * 1993-02-05 2002-03-18 住友特殊金属株式会社 超電導型ｍｒｉ用磁界発生装置
JP3123731B2 (ja) * 1993-02-19 2001-01-15 株式会社日立メディコ 磁気共鳴イメージング装置の磁界発生装置
JP2757104B2 (ja) * 1993-04-01 1998-05-25 信越化学工業株式会社 磁場発生装置
FR2704975B1 (fr) * 1993-05-03 1995-06-23 Commissariat Energie Atomique Structure d'aimant permanent pour la production d'une induction magnétique stable et homogène dans un volume donné.
FI933834A7 (fi) * 1993-09-01 1995-03-02 Picker Nordstar Oy Magneettikuvauslaitteen napakenkä
US5495222A (en) * 1994-04-15 1996-02-27 New York University Open permanent magnet structure for generating highly uniform field
US5539366A (en) * 1994-07-27 1996-07-23 General Electric Company Magnet having contoured pole faces for magnetic field homogeneity
WO1998019317A1 (en) 1996-10-30 1998-05-07 Hitachi Medical Corporation Superconducting magnetic device
US6437571B1 (en) 1997-11-21 2002-08-20 Fonar Corporation MRI apparatus
US7127802B1 (en) 1997-11-21 2006-10-31 Fonar Corporation Method of fabricating a composite plate
IT1298022B1 (it) 1997-12-05 1999-12-20 Esaote Spa Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare.
US6163154A (en) * 1997-12-23 2000-12-19 Magnetic Diagnostics, Inc. Small scale NMR spectroscopic apparatus and method
US6124710A (en) * 1998-11-13 2000-09-26 Cts Corporation Rotary magnetic encoder using hall effect for detecting revolution of a shaft
USD428151S (en) * 1998-11-25 2000-07-11 Fonar Corporation Magnetic resonance imaging apparatus
US6782049B1 (en) * 1999-01-29 2004-08-24 Hewlett-Packard Development Company, L.P. System for selecting a keyframe to represent a video
US6288534B1 (en) 1999-02-10 2001-09-11 Cts Corporation Non-contacting throttle valve position sensor
GB2353865A (en) * 1999-04-01 2001-03-07 Helispin Polarisierte Gase Gmb MRI apparatus with means for administering hyperpolarised gas
KR100319923B1 (ko) 1999-05-10 2002-01-09 윤종용 자기공명영상장치용 자기장 발생 장치
US8190234B2 (en) 2000-07-28 2012-05-29 Fonar Corporation Movable patient support with spatial locating feature
US7196519B2 (en) * 2000-07-28 2007-03-27 Fonar Corporation Stand-up vertical field MRI apparatus
US7697971B1 (en) 2000-07-28 2010-04-13 Fonar Corporation Positioning system for an MRI
US7248137B1 (en) 2000-11-22 2007-07-24 Fonar Corporation Magnet structure
US6822449B1 (en) 2000-11-22 2004-11-23 Fonar Corporation Ferromagnetic frame with laminated carbon steel
US7463129B1 (en) 2000-11-22 2008-12-09 Fonar Corporation Magnet structure
US6577125B2 (en) * 2000-12-18 2003-06-10 Halliburton Energy Services, Inc. Temperature compensated magnetic field apparatus for NMR measurements
US6518867B2 (en) 2001-04-03 2003-02-11 General Electric Company Permanent magnet assembly and method of making thereof
US6662434B2 (en) 2001-04-03 2003-12-16 General Electric Company Method and apparatus for magnetizing a permanent magnet
US6934574B1 (en) 2001-06-21 2005-08-23 Fonar Corporation MRI scanner and method for modular patient handling
US20040189123A1 (en) * 2001-08-24 2004-09-30 Peter Nusser Magnetically hard object and method for adjusting the direction and position of a magnetic vector
EP1419510B1 (de) * 2001-08-24 2010-03-24 Berlin Heart GmbH Hartmagnetischer gegenstand und verfahren zur einstellung von richtung und lage eines magnetvektors
US6944492B1 (en) 2001-10-01 2005-09-13 Fonar Corporation Patient bed support for an open MRI system
US7701209B1 (en) 2001-10-05 2010-04-20 Fonar Corporation Coils for horizontal field magnetic resonance imaging
US7906966B1 (en) 2001-10-05 2011-03-15 Fonar Corporation Quadrature foot coil antenna for magnetic resonance imaging
US7123008B1 (en) 2002-04-19 2006-10-17 Fonar Corporation Positional magnetic resonance imaging
US8064984B2 (en) 2003-03-18 2011-11-22 Esaote S.P.A. Magnetic resonance imaging apparatus
US7463027B2 (en) 2003-05-02 2008-12-09 Halliburton Energy Services, Inc. Systems and methods for deep-looking NMR logging
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
GB2422201B (en) 2003-10-03 2007-06-06 Halliburton Energy Serv Inc System And Methods For T1-Based Logging
JP4139767B2 (ja) * 2003-12-12 2008-08-27 信越化学工業株式会社 永久磁石対向型磁気回路
CN100350522C (zh) * 2004-05-18 2007-11-21 北京泰杰磁电研究所 一种磁共振成像磁体及构成方法
US8401615B1 (en) 2004-11-12 2013-03-19 Fonar Corporation Planar coil flexion fixture for magnetic resonance imaging and use thereof
US8332355B2 (en) * 2005-03-28 2012-12-11 Symantec Corporation Method and apparatus for generating readable, unique identifiers
US8395468B2 (en) * 2006-01-04 2013-03-12 University Of Utah Research Foundation High field strength magentic field generation system and associated methods
US9386939B1 (en) 2007-05-10 2016-07-12 Fonar Corporation Magnetic resonance imaging of the spine to detect scoliosis
US8599215B1 (en) 2008-05-07 2013-12-03 Fonar Corporation Method, apparatus and system for joining image volume data
DE102008001896B4 (de) * 2008-05-21 2023-02-02 Robert Bosch Gmbh Mikromechanisches Bauteil und Herstellungsverfahren für ein mikromechanisches Bauteil
AU2009261901B2 (en) 2008-06-24 2014-07-31 Alberta Health Services Magnetic assembly and method for defining a magnetic field for an imaging volume
CN104094368A (zh) 2012-01-30 2014-10-08 三菱电机株式会社 磁路
US11141080B1 (en) 2013-03-13 2021-10-12 Fonar Corporation Cervical vertebra angle measurement

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
EP0161782B1 (de) * 1984-04-11 1988-11-09 Sumitomo Special Metal Co., Ltd. Eine ein Magnetfeld erzeugende Vorrichtung für NMR-CT
NL8402250A (nl) * 1984-07-17 1986-02-17 Philips Nv Kernspin resonantie apparaat met een rechthoekig permanent magnetische magneet.
JPS6134242A (ja) * 1984-07-23 1986-02-18 帝人株式会社 無撚無糊織物の製織方法
US4647887A (en) * 1984-12-24 1987-03-03 The United States Of America As Represented By The Secretary Of The Army Lightweight cladding for magnetic circuits
DE3518852A1 (de) * 1985-05-23 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Magnet eines kernspintomographen
US4675609A (en) * 1985-09-18 1987-06-23 Fonar Corporation Nuclear magnetic resonance apparatus including permanent magnet configuration
US4654618A (en) * 1986-05-01 1987-03-31 The United States Of America As Represented By The Secretary Of The Army Confinement of kOe magnetic fields to very small areas in miniature devices

Also Published As

Publication number Publication date
DE3779715T2 (de) 1993-01-28
EP0262880A2 (de) 1988-04-06
US4777464A (en) 1988-10-11
EP0262880B1 (de) 1992-06-10
EP0262880A3 (en) 1988-06-22

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