IL79831A - Magnetic resonance imaging apparatus including field-homogenizing magnetic elements - Google Patents

Magnetic resonance imaging apparatus including field-homogenizing magnetic elements

Info

Publication number
IL79831A
IL79831A IL79831A IL7983186A IL79831A IL 79831 A IL79831 A IL 79831A IL 79831 A IL79831 A IL 79831A IL 7983186 A IL7983186 A IL 7983186A IL 79831 A IL79831 A IL 79831A
Authority
IL
Israel
Prior art keywords
imaging apparatus
apparatus including
resonance imaging
homogenizing
including field
Prior art date
Application number
IL79831A
Other languages
English (en)
Other versions
IL79831A0 (en
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 IL79831A0 publication Critical patent/IL79831A0/xx
Publication of IL79831A publication Critical patent/IL79831A/xx

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)
IL79831A 1985-08-26 1986-08-25 Magnetic resonance imaging apparatus including field-homogenizing magnetic elements IL79831A (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IL79831A0 IL79831A0 (en) 1986-11-30
IL79831A true IL79831A (en) 1990-08-31

Family

ID=19846468

Family Applications (1)

Application Number Title Priority Date Filing Date
IL79831A IL79831A (en) 1985-08-26 1986-08-25 Magnetic resonance imaging apparatus including field-homogenizing magnetic elements

Country Status (7)

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

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
JPH02502967A (ja) * 1987-04-15 1990-09-20 オックスフォード　マグネット　テクノロジィ　リミテッド 磁界発生装置
US4879538A (en) * 1987-08-14 1989-11-07 Siemens Aktiengesellschaft Magnet system for nuclear magnetic resonance tomography devices
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.
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
GB9407309D0 (en) * 1994-04-13 1994-06-08 Oxford Magnet Tech Improvements in or relating to magnetic resonance imaging apparatus
US5635839A (en) * 1994-11-04 1997-06-03 Picker International, Inc. High order passive shimming assembly for MRI magnets
US5532597A (en) * 1994-11-04 1996-07-02 Picker International, Inc. Passive shimming technique for MRI magnets
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set
EP0770883B1 (en) * 1995-10-23 2004-04-07 General Electric Company Cryogenic-fluid-cooled open MRI magnet with uniform magnetic field
US5594401A (en) * 1996-02-20 1997-01-14 General Electric Company Closed superconductive magnet with uniform imaging volume
US5568102A (en) * 1996-02-20 1996-10-22 General Electric Company Closed superconductive magnet with homogeneous 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
JPH10155765A (ja) * 1996-08-26 1998-06-16 General Electric Co <Ge> 閉構造磁気共鳴イメージング・マグネット
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
US7417434B2 (en) * 2004-06-17 2008-08-26 Koninklijke Philips Electronics N.V. Magnetic resonance imaging system with iron-assisted magnetic field gradient system
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
IL79831A0 (en) 1986-11-30
US4771243A (en) 1988-09-13
FI863407A0 (fi) 1986-08-22
EP0216404B1 (en) 1990-03-21
FI863407A (fi) 1987-02-27
DE3669786D1 (de) 1990-04-26
JPS6247349A (ja) 1987-03-02
EP0216404A1 (en) 1987-04-01
JPH0763457B2 (ja) 1995-07-12
NL8502340A (nl) 1987-03-16

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