ATE376192T1 - Bilderzeugung durch magnetische resonanz - Google Patents

Bilderzeugung durch magnetische resonanz

Info

Publication number
ATE376192T1
ATE376192T1 AT02250959T AT02250959T ATE376192T1 AT E376192 T1 ATE376192 T1 AT E376192T1 AT 02250959 T AT02250959 T AT 02250959T AT 02250959 T AT02250959 T AT 02250959T AT E376192 T1 ATE376192 T1 AT E376192T1
Authority
AT
Austria
Prior art keywords
fluctuations
field
main field
vibrations
pole pieces
Prior art date
Application number
AT02250959T
Other languages
English (en)
Inventor
Ilmari Kinanen
Panu Oskari Perko
Original Assignee
Philips Medical Systems Mr Tec
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 Medical Systems Mr Tec filed Critical Philips Medical Systems Mr Tec
Application granted granted Critical
Publication of ATE376192T1 publication Critical patent/ATE376192T1/de

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
    • G01R33/389—Field stabilisation, e.g. by field measurements and control means or indirectly by current stabilisation
    • 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
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
AT02250959T 2001-02-13 2002-02-12 Bilderzeugung durch magnetische resonanz ATE376192T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/782,250 US6433550B1 (en) 2001-02-13 2001-02-13 MRI magnet with vibration compensation

Publications (1)

Publication Number Publication Date
ATE376192T1 true ATE376192T1 (de) 2007-11-15

Family

ID=25125482

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02250959T ATE376192T1 (de) 2001-02-13 2002-02-12 Bilderzeugung durch magnetische resonanz

Country Status (5)

Country Link
US (1) US6433550B1 (de)
EP (1) EP1231477B1 (de)
JP (1) JP2002315736A (de)
AT (1) ATE376192T1 (de)
DE (1) DE60222952T2 (de)

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US7196519B2 (en) * 2000-07-28 2007-03-27 Fonar Corporation Stand-up vertical field MRI apparatus
JP3987686B2 (ja) * 2001-02-02 2007-10-10 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 静磁界補正方法およびｍｒｉ装置
US7345559B2 (en) 2001-09-13 2008-03-18 General Electric Company High field open MRI magnet isolation system and method
DE10148619B4 (de) * 2001-10-02 2006-04-27 Siemens Ag Magnetresonanzgerät
EP1459088A1 (de) * 2001-12-20 2004-09-22 Koninklijke Philips Electronics N.V. Lärmunterdrückung in einem offenen magnetresonanzgerät
US6822446B2 (en) * 2002-09-12 2004-11-23 Ge Medical Systems Global Technology Company, Llc MRI magnet vibration induced field instability simulator
US20040113622A1 (en) * 2002-12-13 2004-06-17 Huageng Luo Active damping for open MRI image stabilization
DE10346275B4 (de) * 2003-10-06 2005-08-18 Siemens Ag Erzeuger zeitvariabler Magnetfelder eines Magnetresonanzgeräts und Magnetresonanzgerät mit dem Erzeuger
DE10354228B3 (de) * 2003-11-20 2005-09-22 Siemens Ag Gradientenspulen-Hochfrequenzantenneneinheit und Magnetresonanzgerät mit einer Gradientenspulen-Hochfrequenzantenneneinheit
DE102004003535B3 (de) * 2004-01-23 2005-10-13 Siemens Ag Erzeuger eines zeitvariablen Magnetfelds eines Magnetresonanzgeräts und Magnetresonanzgerät mit einem derartigen Erzeuger eines zeitvariablen Magnetfelds
DE102004024098B4 (de) * 2004-05-14 2007-07-26 Siemens Ag Erzeuger zeitvariabler Magnetfelder für ein Magnetresonanzgerät und Magnetresonanzgerät mit einem derartigen Erzeuger zeitvariabler Magnetfelder
US20050281391A1 (en) * 2004-06-21 2005-12-22 General Electric Company Active vibration control in computed tomography systems
JP2008514299A (ja) * 2004-09-27 2008-05-08 フォーナー・コーポレイション 磁気共鳴撮像システム、装置および関連する方法
DE102004049497A1 (de) * 2004-10-11 2006-04-13 Siemens Ag Verfahren zur Kompensation einer Magnetfeldstörung eines Magnetresonanzgeräts und Magnetresonanzgerät
DE202006002074U1 (de) * 2006-02-08 2006-07-13 AixNMR Zentrum für Magnetische Resonanz e.V. Unilateraler NMR Sensor mit mikroskopischer Tiefenauflösung
US8073524B2 (en) * 2007-11-08 2011-12-06 Imris Inc. Control of magnetic field homogeneity in movable MRI scanning system
US8295983B2 (en) * 2008-11-10 2012-10-23 Silent Printer Holdings, Llc Apparatus and method for characterization and control of usage disturbances in a usage environment of printers and other dynamic systems
US8847587B2 (en) * 2011-07-13 2014-09-30 Biosense Webster (Israel) Ltd. Field generator patch with distortion cancellation
CN105548521B (zh) * 2015-12-11 2017-06-06 中国矿业大学 开放式磁重力模型试验系统重力场模拟装置及其方法
EP3730963A1 (de) 2019-04-25 2020-10-28 Koninklijke Philips N.V. Mrt mit anpassung von schwingungszuständen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548653A (en) * 1992-02-14 1996-08-20 General Electric Company Active control of noise and vibrations in magnetic resonance imaging systems using vibrational inputs
GB2295672B (en) * 1994-11-29 1999-05-12 Oxford Magnet Tech Improvements in or relating to cryogenic MRI magnets
DE19536390A1 (de) * 1995-09-29 1997-04-03 Siemens Ag Anordnung zur Messung und Regelung des Grundfeldes eines Magneten eines Kernspintomographiegerätes
US6092928A (en) 1998-11-12 2000-07-25 Picker International, Inc. Apparatus and method to determine the relative position of a detector array and an x-ray tube focal spot
US6169404B1 (en) * 1998-12-18 2001-01-02 General Electric Company Vibration cancellation for C-shaped superconducting magnet
US6188220B1 (en) * 1999-05-04 2001-02-13 General Electric Company Method and apparatus for measuring vibration of a magnetic resonance imaging system

Also Published As

Publication number Publication date
DE60222952T2 (de) 2008-07-31
DE60222952D1 (de) 2007-11-29
JP2002315736A (ja) 2002-10-29
EP1231477A1 (de) 2002-08-14
US6433550B1 (en) 2002-08-13
EP1231477B1 (de) 2007-10-17

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