JPH0475008B2 - - Google Patents

Info

Publication number
JPH0475008B2
JPH0475008B2 JP60155330A JP15533085A JPH0475008B2 JP H0475008 B2 JPH0475008 B2 JP H0475008B2 JP 60155330 A JP60155330 A JP 60155330A JP 15533085 A JP15533085 A JP 15533085A JP H0475008 B2 JPH0475008 B2 JP H0475008B2
Authority
JP
Japan
Prior art keywords
magnetic field
bars
section
resonance apparatus
magnetic 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
JP60155330A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6138453A (ja
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 filed Critical
Publication of JPS6138453A publication Critical patent/JPS6138453A/ja
Publication of JPH0475008B2 publication Critical patent/JPH0475008B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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

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)
JP15533085A 1984-07-17 1985-07-16 核磁気共鳴装置 Granted JPS6138453A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8402250 1984-07-17
NL8402250A NL8402250A (nl) 1984-07-17 1984-07-17 Kernspin resonantie apparaat met een rechthoekig permanent magnetische magneet.

Publications (2)

Publication Number Publication Date
JPS6138453A JPS6138453A (ja) 1986-02-24
JPH0475008B2 true JPH0475008B2 (US07345094-20080318-C00003.png) 1992-11-27

Family

ID=19844225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15533085A Granted JPS6138453A (ja) 1984-07-17 1985-07-16 核磁気共鳴装置

Country Status (6)

Country Link
US (1) US4695802A (US07345094-20080318-C00003.png)
EP (1) EP0170318B1 (US07345094-20080318-C00003.png)
JP (1) JPS6138453A (US07345094-20080318-C00003.png)
DE (1) DE3566454D1 (US07345094-20080318-C00003.png)
FI (1) FI86584C (US07345094-20080318-C00003.png)
NL (1) NL8402250A (US07345094-20080318-C00003.png)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3518852A1 (de) * 1985-05-23 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Magnet eines kernspintomographen
US4679022A (en) * 1985-12-27 1987-07-07 Sumitomo Special Metal Co. Ltd. Magnetic field generating device for NMR-CT
EP0262880B1 (en) * 1986-09-27 1992-06-10 Sumitomo Special Metals Co. Ltd. Magnetic field generating device for nmr-ct
US4931760A (en) * 1986-10-08 1990-06-05 Asahi Kasei Kogyo Kabushiki Kaisha Uniform magnetic field generator
FR2605449B1 (fr) * 1986-10-17 1988-12-02 Thomson Cgr Bloc magnetique a aimantation ajustable pour la production d'un champ magnetique permanent dans une zone d'interet
FR2611975B1 (fr) * 1987-03-03 1995-02-17 Commissariat Energie Atomique Systeme d'aimants permanents pour un champ magnetique intense
DE3719306A1 (de) * 1987-06-10 1988-12-22 Bruker Analytische Messtechnik Magnet fuer nmr-tomographen und verfahren zu seiner herstellung
US4998976A (en) * 1987-10-07 1991-03-12 Uri Rapoport Permanent magnet arrangement
NL8801162A (nl) * 1988-05-04 1989-12-01 Philips Nv Supergeleidend magneetstelsel met supergeleidende cylinders.
US5134374A (en) * 1989-06-01 1992-07-28 Applied Superconetics Magnetic field control apparatus
IT8921079A0 (it) * 1989-07-03 1989-07-03 Comec Srl Sistema per la fabbricazione di magneti permanenti senza giochi, generatori di campo magnetico uniforme e relativi magneti permanenti elementari o compositi.
JPH03131234A (ja) * 1989-07-07 1991-06-04 Sumitomo Special Metals Co Ltd Ｍｒｉ用磁界発生装置
US5119057A (en) * 1989-10-19 1992-06-02 New York University Optimum design of two-dimensional permanent magnets
US5162770A (en) * 1990-02-22 1992-11-10 Esaote Biomedica Terminations of cylindrical permanent magnets
JP2808198B2 (ja) * 1990-07-02 1998-10-08 住友特殊金属株式会社 Ｍｒｉ用磁界発生装置とその製法
IT1247385B (it) * 1990-07-16 1994-12-12 Esaote Biomedica Magneti permanenti generatori di campi magnetici omogenei, in particolare per magnetic resonance imaging (rappresentazione per risonanza magnetica), e relativo metodo di fabbricazione
US5283544A (en) * 1990-09-29 1994-02-01 Sumitomo Special Metals Co., Ltd. Magnetic field generating device used for MRI
US5162771A (en) * 1990-10-01 1992-11-10 New York University Highly efficient yoked permanent magnet
EP0488015B1 (de) * 1990-11-30 1996-10-30 Siemens Aktiengesellschaft Homogenfeldmagnet mit mindestens einer mechanisch auszurichtenden Polplatte
JPH05211104A (ja) * 1991-12-05 1993-08-20 Hitachi Medical Corp 磁気共鳴イメージング装置用静磁場発生装置
JP2767659B2 (ja) * 1991-12-17 1998-06-18 信越化学工業株式会社 磁場発生装置
GB9206014D0 (en) * 1992-03-19 1992-04-29 Oxford Instr Ltd Magnet assembly
DE69319890T2 (de) * 1992-01-13 1999-02-25 Oxford Instruments (Uk) Ltd., Witney, Oxon Bestimmung von gesteinkern-charakteristiken
EP0591542B1 (en) * 1992-03-18 2003-01-02 Sumitomo Special Metals Company Limited Magnetic field generator for mri
US5382936A (en) * 1992-06-02 1995-01-17 The United States Of America As Represented By The Secretary Of The Army Field augmented permanent magnet structures
JPH067316A (ja) * 1992-06-29 1994-01-18 Hitachi Medical Corp 磁気共鳴イメージング装置の磁界発生装置
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
FR2702592B1 (fr) * 1993-03-09 1995-04-07 Commissariat Energie Atomique Structure d'aimant permanent à haute efficacité et à faibles fuites.
EP0616230B1 (de) * 1993-03-15 1998-08-05 Siemens Aktiengesellschaft Homogenfeldmagnet mit über Korrekturluftspalte beabstandeten Polplatteneinrichtungen seiner Polschuhe
GB2276945B (en) * 1993-04-08 1997-02-26 Oxford Magnet Tech Improvements in or relating to MRI magnets
JP3150248B2 (ja) * 1993-12-27 2001-03-26 住友特殊金属株式会社 Ｍｒｉ用磁界発生装置
US6150911A (en) * 1996-07-24 2000-11-21 Odin Technologies Ltd. Yoked permanent magnet assemblies for use in medical applications
US6157278A (en) * 1997-07-23 2000-12-05 Odin Technologies Ltd. Hybrid magnetic apparatus for use in medical applications
US6411187B1 (en) 1997-07-23 2002-06-25 Odin Medical Technologies, Ltd. Adjustable hybrid magnetic apparatus
WO1999015914A1 (en) 1997-09-25 1999-04-01 Odin Technologies Ltd. Magnetic apparatus for mri
WO2001046709A1 (en) * 1999-12-20 2001-06-28 Koninklijke Philips Electronics N.V. Mri apparatus with flexible gradient control
WO2003096897A1 (fr) * 2002-05-20 2003-11-27 Sumitomo Special Metals Co., Ltd. Dispositif generateur de champ magnetique et equipement irm utilisant ce dispositif
CN103558241B (zh) * 2013-11-02 2016-03-30 国家电网公司 绝缘子样品老化度检测方法
RU2603348C2 (ru) * 2015-03-26 2016-11-27 Закрытое акционерное общество "Научно - техническое объединение ПРИБОРСЕРВИС" (ЗАО "НТО ПРИБОРСЕРВИС") Магниторазрядный насос
EP3896473A1 (en) * 2020-04-17 2021-10-20 Siemens Healthcare GmbH Magnet system for a magnetic resonance imaging system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60260107A (ja) * 1984-04-23 1985-12-23 フイ−ルド・エフエクツ・インコ−ポレイテツド 整調可能なセグメント式リング磁石及び作製方法
JPS61274305A (ja) * 1985-05-29 1986-12-04 Asahi Chem Ind Co Ltd 均一磁場発生装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768054A (en) * 1972-04-03 1973-10-23 Gen Electric Low flux leakage magnet construction
US4411270A (en) * 1978-11-20 1983-10-25 Damadian Raymond V Apparatus and method for nuclear magnetic resonance scanning and mapping
US4355236A (en) * 1980-04-24 1982-10-19 New England Nuclear Corporation Variable strength beam line multipole permanent magnets and methods for their use
JPS58193557U (ja) * 1982-06-18 1983-12-23 三菱製鋼磁材株式会社 イオンポンプ用磁石装置
WO1984000611A1 (en) * 1982-08-04 1984-02-16 William H Oldendorf Adjustable magnet suitable for in vivo nmr imaging and method of adjusting the same
CA1198162A (en) * 1982-09-23 1985-12-17 Robert D. Hay Nmr imaging apparatus
DE3245945A1 (de) * 1982-12-11 1984-06-14 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Elektromagnet fuer die nmr-tomographie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60260107A (ja) * 1984-04-23 1985-12-23 フイ−ルド・エフエクツ・インコ−ポレイテツド 整調可能なセグメント式リング磁石及び作製方法
JPS61274305A (ja) * 1985-05-29 1986-12-04 Asahi Chem Ind Co Ltd 均一磁場発生装置

Also Published As

Publication number Publication date
JPS6138453A (ja) 1986-02-24
FI86584C (fi) 1992-09-10
US4695802A (en) 1987-09-22
FI852764A0 (fi) 1985-07-12
DE3566454D1 (en) 1988-12-29
NL8402250A (nl) 1986-02-17
FI852764L (fi) 1986-01-18
EP0170318B1 (en) 1988-11-23
FI86584B (fi) 1992-05-29
EP0170318A1 (en) 1986-02-05

Similar Documents

Publication Publication Date Title
JPH0475008B2 (US07345094-20080318-C00003.png)
US4398150A (en) Ironless high-homogenety magnet and its application to nuclear magnetic resonance imaging
JPH04504067A (ja) 磁石装置
US6002255A (en) Planar open magnet MRI system having active target field shimming
US10847295B2 (en) Device, system and method for obtaining a magnetic measurement with permanent magnets
JP2007203032A (ja) 磁気共鳴イメージング装置
US4728895A (en) System of coils for producing additional fields for obtaining polarization fields with constant gradients in a magnet having polarization pole pieces for image production by nuclear magnetic resonance
JPH0577033B2 (US07345094-20080318-C00003.png)
JP2023123651A (ja) 永久磁石を用いて磁気測定結果を得るためのデバイス、システムおよび方法
US7323962B2 (en) Magnet and method of forming uniform magnetic field for MRI system
JPS62252110A (ja) 核磁気共鳴ｃｔ設備の磁石システム用枠構造
US5914600A (en) Planar open solenoidal magnet MRI system
US20050151539A1 (en) Magnetic field generating device and mri equipment using the device
US4553122A (en) Cored magnet with lightweight large area pole pieces
US6909284B2 (en) High efficiency planar open magnet MRI system structured and arranged to provide orthogonal ferrorefractory effect
JPH0541530Y2 (US07345094-20080318-C00003.png)
US6831463B1 (en) Ferrorefraction MRI system having two orthogonal remote field polarization axes
JP2005160842A (ja) 磁気共鳴イメージング装置
JP3372098B2 (ja) 磁気共鳴イメージング装置用静磁場発生装置
JPH03205029A (ja) 磁気共鳴イメージング装置
JPS62142542A (ja) 磁気共鳴イメ−ジング装置
JPH07194572A (ja) 磁気共鳴イメージング装置の磁界発生装置
JPH01170448A (ja) プローブ
JPH0963832A (ja) Ｍｒｉ用磁界発生装置
JPH0556946A (ja) 核磁気共鳴装置用磁石装置