FI852764A0 - Kaernmagnetisk resonansapparat med en permanent magnet. - Google Patents

Kaernmagnetisk resonansapparat med en permanent magnet.

Info

Publication number
FI852764A0
FI852764A0 FI852764A FI852764A FI852764A0 FI 852764 A0 FI852764 A0 FI 852764A0 FI 852764 A FI852764 A FI 852764A FI 852764 A FI852764 A FI 852764A FI 852764 A0 FI852764 A0 FI 852764A0
Authority
FI
Finland
Prior art keywords
resonansapparat
kaernmagnetisk
med
permanent magnet
permanent
Prior art date
Application number
FI852764A
Other languages
English (en)
Other versions
FI86584B (fi
FI852764L (fi
FI86584C (fi
Inventor
Hinne Zijlstra
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of FI852764A0 publication Critical patent/FI852764A0/fi
Publication of FI852764L publication Critical patent/FI852764L/fi
Publication of FI86584B publication Critical patent/FI86584B/fi
Application granted granted Critical
Publication of FI86584C publication Critical patent/FI86584C/fi

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)
FI852764A 1984-07-17 1985-07-12 Kaernmagnetisk resonansapparat med en permanent magnet. FI86584C (fi)

Applications Claiming Priority (2)

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

Publications (4)

Publication Number Publication Date
FI852764A0 true FI852764A0 (fi) 1985-07-12
FI852764L FI852764L (fi) 1986-01-18
FI86584B FI86584B (fi) 1992-05-29
FI86584C FI86584C (fi) 1992-09-10

Family

ID=19844225

Family Applications (1)

Application Number Title Priority Date Filing Date
FI852764A FI86584C (fi) 1984-07-17 1985-07-12 Kaernmagnetisk resonansapparat med en permanent magnet.

Country Status (6)

Country Link
US (1) US4695802A (fi)
EP (1) EP0170318B1 (fi)
JP (1) JPS6138453A (fi)
DE (1) DE3566454D1 (fi)
FI (1) FI86584C (fi)
NL (1) NL8402250A (fi)

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
EP0479514B1 (en) * 1990-09-29 1998-07-01 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
WO1993014413A1 (en) * 1992-01-13 1993-07-22 Oxford Instruments (Uk) Limited Determination of rock core characteristics
DE69332601D1 (de) * 1992-03-18 2003-02-06 Sumitomo Spec Metals Magnetfeld-generator zur bilddarstellung mittels kernresonanz
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.
DE59406586D1 (de) * 1993-03-15 1998-09-10 Siemens Ag 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
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
EP1157281A1 (en) * 1999-12-20 2001-11-28 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

Family Cites Families (9)

* 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
US4538130A (en) * 1984-04-23 1985-08-27 Field Effects, Inc. Tunable segmented ring magnet and method of manufacture
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
US4695802A (en) 1987-09-22
JPH0475008B2 (fi) 1992-11-27
EP0170318B1 (en) 1988-11-23
EP0170318A1 (en) 1986-02-05
FI86584B (fi) 1992-05-29
FI852764L (fi) 1986-01-18
DE3566454D1 (en) 1988-12-29
FI86584C (fi) 1992-09-10
JPS6138453A (ja) 1986-02-24
NL8402250A (nl) 1986-02-17

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: N.V. PHILIPS GLOEILAMPENFABRIEKEN