NL8502340A - Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. - Google Patents

Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. Download PDF

Info

Publication number
NL8502340A
NL8502340A NL8502340A NL8502340A NL8502340A NL 8502340 A NL8502340 A NL 8502340A NL 8502340 A NL8502340 A NL 8502340A NL 8502340 A NL8502340 A NL 8502340A NL 8502340 A NL8502340 A NL 8502340A
Authority
NL
Netherlands
Prior art keywords
magnetic
field
resonance device
magnetic resonance
magnetic material
Prior art date
Application number
NL8502340A
Other languages
English (en)
Dutch (nl)
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
Priority to NL8502340A priority Critical patent/NL8502340A/nl
Priority to US06/891,849 priority patent/US4771243A/en
Priority to EP86201372A priority patent/EP0216404B1/en
Priority to DE8686201372T priority patent/DE3669786D1/de
Priority to FI863407A priority patent/FI863407A/fi
Priority to IL79831A priority patent/IL79831A/xx
Priority to JP61198281A priority patent/JPH0763457B2/ja
Publication of NL8502340A publication Critical patent/NL8502340A/nl

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
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
NL8502340A 1985-08-26 1985-08-26 Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. NL8502340A (nl)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL8502340A NL8502340A (nl) 1985-08-26 1985-08-26 Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen.
US06/891,849 US4771243A (en) 1985-08-26 1986-08-01 Magnetic resonance imaging apparatus including field-homogenizing magnetic elements
EP86201372A EP0216404B1 (en) 1985-08-26 1986-08-04 Magnetic resonance imaging apparatus including-homogenizing magnetic elements
DE8686201372T DE3669786D1 (de) 1985-08-26 1986-08-04 Apparat zur bilderzeugung mittels magnetischer resonanz mit homogenisierenden magnetischen elementen.
FI863407A FI863407A (fi) 1985-08-26 1986-08-22 Magnetisk resonansavbildningsapparat innehaollande magnetiska element avsedda foer faelthomogenisering.
IL79831A IL79831A (en) 1985-08-26 1986-08-25 Magnetic resonance imaging apparatus including field-homogenizing magnetic elements
JP61198281A JPH0763457B2 (ja) 1985-08-26 1986-08-26 磁気共鳴イメ−ジング装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8502340 1985-08-26
NL8502340A NL8502340A (nl) 1985-08-26 1985-08-26 Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen.

Publications (1)

Publication Number Publication Date
NL8502340A true NL8502340A (nl) 1987-03-16

Family

ID=19846468

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8502340A NL8502340A (nl) 1985-08-26 1985-08-26 Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen.

Country Status (7)

Country Link
US (1) US4771243A (ja)
EP (1) EP0216404B1 (ja)
JP (1) JPH0763457B2 (ja)
DE (1) DE3669786D1 (ja)
FI (1) FI863407A (ja)
IL (1) IL79831A (ja)
NL (1) NL8502340A (ja)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184243B (en) * 1985-12-09 1989-12-20 Picker Int Ltd Electromagnet arrangements
WO1988008126A1 (en) * 1987-04-15 1988-10-20 Oxford Magnet Technology Limited Magnetic field generating apparatus
DE3866060D1 (de) * 1987-08-14 1991-12-12 Siemens Ag Elektrischer magnet fuer kernspin-thomographen.
FR2623324A1 (fr) * 1987-11-13 1989-05-19 Thomson Cgr Dispositif d'imagerie rmn, procede de correction d'inhomogeneite et procede de realisation d'aimants mis en oeuvre dans le dispositif
US4881035A (en) * 1987-11-24 1989-11-14 Siemens Aktiengesellschaft Magnetic structural arrangement of an installation for nuclear magnetic resonance tomography with superconducting background field coils and normal-conducting gradient coils
GB8808334D0 (en) * 1988-04-08 1988-05-11 Magnex Scient Ltd Electromagnets
JPH0690975B2 (ja) * 1988-06-03 1994-11-14 三菱電機株式会社 磁場補正用磁性体シム
US4853663A (en) * 1988-12-22 1989-08-01 General Electric Company Passive shims for correction of (3,2) and (3,-2) harmonic terms in magnetic resonance magnets
GB8912601D0 (en) * 1989-06-01 1989-07-19 Oxford Magnet Tech Magnetic field generating apparatus
US5001447A (en) * 1989-08-23 1991-03-19 General Electric Company Ferromagnetic compensation rings for high field strength magnets
NL9001300A (nl) * 1990-06-08 1992-01-02 Koninkl Philips Electronics Nv Magneetstelsel voor magnetische resonantie.
GB9105286D0 (en) * 1991-03-13 1991-04-24 Oxford Instr Ltd Magnetic field generating apparatus
US5317298A (en) * 1993-01-04 1994-05-31 General Electric Company Apparatus and method for passive shimming of a superconducting magnet which images human limbs
GB2276945B (en) * 1993-04-08 1997-02-26 Oxford Magnet Tech Improvements in or relating to MRI magnets
BE1007783A3 (nl) * 1993-11-25 1995-10-17 Philips Electronics Nv Magnetisch resonantie apparaat met elementen voor het homogeniseren van het magneetveld.
GB9407309D0 (en) * 1994-04-13 1994-06-08 Oxford Magnet Tech Improvements in or relating to magnetic resonance imaging apparatus
EP0677751B1 (en) * 1994-04-13 2000-10-18 Oxford Magnet Technology Limited Improvements in or relating to magnetic resonance imaging apparatus
DE4412755C2 (de) * 1994-04-13 1996-09-05 Bruker Analytische Messtechnik Magnetsystem für die NMR-Tomographie
US5532597A (en) * 1994-11-04 1996-07-02 Picker International, Inc. Passive shimming technique for MRI magnets
US5635839A (en) * 1994-11-04 1997-06-03 Picker International, Inc. High order passive shimming assembly for MRI magnets
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set
JP3663262B2 (ja) * 1995-10-23 2005-06-22 ゼネラル・エレクトリック・カンパニイ 開放形磁気共鳴作像磁石
US5568102A (en) * 1996-02-20 1996-10-22 General Electric Company Closed superconductive magnet with homogeneous imaging volume
US5594401A (en) * 1996-02-20 1997-01-14 General Electric Company Closed superconductive magnet with uniform imaging volume
JP3585141B2 (ja) * 1996-04-05 2004-11-04 株式会社日立メディコ 超電導磁石装置
US5721523A (en) * 1996-08-26 1998-02-24 General Electric Company Compact MRI superconducting magnet
EP0826978A1 (en) * 1996-08-26 1998-03-04 General Electric Company Closed MRI magnet having compact design
DE60230561D1 (de) * 2001-05-17 2009-02-12 Mitsubishi Electric Corp Supraleitender Magnet für die bildgebende magnetische Resonanz
US6861933B1 (en) 2001-05-17 2005-03-01 Mitsubishi Denki Kabushiki Kaisha Superconductive magnet device
US7508208B2 (en) * 2004-03-03 2009-03-24 Koninklijke Philips Electronics N.V. Magnetic resonance imaging scanner with booster iron
CN101019036A (zh) * 2004-06-17 2007-08-15 皇家飞利浦电子股份有限公司 带有铁辅助磁场梯度系统的磁共振成像系统
CN103442635B (zh) * 2011-03-25 2016-01-20 株式会社日立医疗器械 静磁场均匀度的调整方法、磁共振成像用静磁场产生装置、磁场调整系统、程序

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123493A1 (de) * 1981-06-13 1982-12-30 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Elektromagnet fuer die nmr-tomographie
JPS5960346A (ja) * 1982-09-30 1984-04-06 Toshiba Corp 磁気共鳴イメージング装置用傾斜磁場コイルユニット
DE3245945A1 (de) * 1982-12-11 1984-06-14 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Elektromagnet fuer die nmr-tomographie
US4591789A (en) * 1983-12-23 1986-05-27 General Electric Company Method for correcting image distortion due to gradient nonuniformity
GB8402360D0 (en) * 1984-01-30 1984-02-29 Picker Int Ltd Nmr shims
JPS60189905A (ja) * 1984-03-09 1985-09-27 Mitsubishi Electric Corp 高均一磁界発生装置
GB8407098D0 (en) * 1984-03-19 1984-04-26 Picker Int Ltd Nuclear magnetic resonance apparatus
US4506247A (en) * 1984-05-23 1985-03-19 General Electric Company Axisymmetric correction coil system for NMR magnets
DE8419763U1 (de) * 1984-07-02 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Kernspin-Tomographiegerät

Also Published As

Publication number Publication date
US4771243A (en) 1988-09-13
IL79831A (en) 1990-08-31
FI863407A (fi) 1987-02-27
DE3669786D1 (de) 1990-04-26
JPH0763457B2 (ja) 1995-07-12
EP0216404A1 (en) 1987-04-01
IL79831A0 (en) 1986-11-30
FI863407A0 (fi) 1986-08-22
EP0216404B1 (en) 1990-03-21
JPS6247349A (ja) 1987-03-02

Similar Documents

Publication Publication Date Title
NL8502340A (nl) Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen.
US4486711A (en) Gradient field coil system for nuclear spin tomography
JP2581536B2 (ja) 磁石装置およびその使用方法
US4905316A (en) Magnetic field generating system for magnetic resonance imaging system
US4468622A (en) Gradient coil system for nuclear magnetic resonance apparatus
JPH0576592B2 (ja)
US5173661A (en) Nuclear magnetic resonance spectrometer
EP0304126A1 (en) Magnetic resonance apparatus comprising an improved gradient coil system
US20080164878A1 (en) Minimum Energy Shim Coils For Magnetic Resonance
EP2981978B1 (en) Gradient coil assembly with outer coils comprising aluminum
JPH0353584B2 (ja)
JP3682627B2 (ja) 磁気共鳴撮像装置
EP0307981A1 (en) Magnetic resonance apparatus comprising integrated gradient r.f. coils
NL8603076A (nl) Gradient spoel voor magnetisch kernspin apparaat.
US6351123B1 (en) Gradient coil system for a magnetic resonance tomography apparatus
JPH03138912A (ja) 高磁界強度磁石用強磁性補償リング
JP3702498B2 (ja) 磁気共鳴撮像装置用の傾斜コイル機構
US5568110A (en) Closed MRI magnet having reduced length
US5594401A (en) Closed superconductive magnet with uniform imaging volume
US6856223B1 (en) Open-type magnet device for MRI
EP0154996B1 (en) Magnetic resonance imaging apparatus using shim coil correction
US5568102A (en) Closed superconductive magnet with homogeneous imaging volume
EP0210289B1 (en) Superconducting filter coils for high homogeneity magnetic field
JPH0268038A (ja) 磁気共鳴イメージング装置の超電導マグネット
EP1051636A1 (en) Magnetic resonance imaging system

Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed