DE69211806T2 - Korrektur von Signalverzerrungen in einem magnetischen Kernresonanzapparat - Google Patents

Korrektur von Signalverzerrungen in einem magnetischen Kernresonanzapparat

Info

Publication number
DE69211806T2
DE69211806T2 DE69211806T DE69211806T DE69211806T2 DE 69211806 T2 DE69211806 T2 DE 69211806T2 DE 69211806 T DE69211806 T DE 69211806T DE 69211806 T DE69211806 T DE 69211806T DE 69211806 T2 DE69211806 T2 DE 69211806T2
Authority
DE
Germany
Prior art keywords
correction
magnetic resonance
signal distortion
resonance apparatus
distortion
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
DE69211806T
Other languages
English (en)
Other versions
DE69211806D1 (de
Inventor
Stuart Crozier
David M Doddrell
Michael Thomas Gladwin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Queensland UQ
Original Assignee
University of Queensland UQ
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 University of Queensland UQ filed Critical University of Queensland UQ
Application granted granted Critical
Publication of DE69211806D1 publication Critical patent/DE69211806D1/de
Publication of DE69211806T2 publication Critical patent/DE69211806T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01R33/44—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
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69211806T 1991-10-25 1992-10-06 Korrektur von Signalverzerrungen in einem magnetischen Kernresonanzapparat Expired - Lifetime DE69211806T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPK915091 1991-10-25
EP92107428 1992-04-30

Publications (2)

Publication Number Publication Date
DE69211806D1 DE69211806D1 (de) 1996-08-01
DE69211806T2 true DE69211806T2 (de) 1996-10-31

Family

ID=25644131

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69211806T Expired - Lifetime DE69211806T2 (de) 1991-10-25 1992-10-06 Korrektur von Signalverzerrungen in einem magnetischen Kernresonanzapparat

Country Status (3)

Country Link
US (1) US5289127A (de)
EP (1) EP0538668B1 (de)
DE (1) DE69211806T2 (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5497087A (en) * 1994-10-20 1996-03-05 Shell Oil Company NMR logging of natural gas reservoirs
US5818319A (en) * 1995-12-21 1998-10-06 The University Of Queensland Magnets for magnetic resonance systems
US5689186A (en) * 1995-12-26 1997-11-18 General Electric Company Method for producing an off-center image using an EPI pulse sequence
DE19616403C2 (de) * 1996-04-24 2002-06-13 Siemens Ag Verfahren zur Ermittlung des zeitlichen Verlaufs des Grundfelds eines Kernspintomographiegerätes unter geschalteten Gradienten
US5856744A (en) * 1996-12-23 1999-01-05 Board Of Trustees Of The Leland Stanford Junior University Method and apparatus for B0 eddy current compensation by B1 phase modulation
US5864233A (en) * 1997-02-22 1999-01-26 General Electric Company Method to reduce eddy current effects in diffusion-weighted echo planar imaging
US6114853A (en) * 1997-06-25 2000-09-05 Toshiba America Mri, Inc. NMR methods for qualification of sequence-induced B0 oscillation and correction of the resultant image artifacts in MRI
US6094048A (en) * 1997-12-18 2000-07-25 Shell Oil Company NMR logging of natural gas reservoirs
US6211675B1 (en) 1998-11-12 2001-04-03 General Electric Company Automatic measurement of gradient field distortion
US6271666B1 (en) * 1999-05-21 2001-08-07 General Electric Company Filtering of oscillatory B0 behavior in NMR devices
US6313630B1 (en) 1999-08-25 2001-11-06 Ge Medical Systems Global Technology Company Llc Modular gradient system for MRI system
US6294913B1 (en) 1999-11-22 2001-09-25 Ge Medical Systems Global Technology Company Llc Compensation of variations in polarizing magnetic field during magnetic resonance imaging
US6448773B1 (en) 2000-02-24 2002-09-10 Toshiba America Mri, Inc. Method and system for measuring and compensating for eddy currents induced during NMR imaging operations
JP3513076B2 (ja) * 2000-04-07 2004-03-31 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 Ｍｒｉ装置
US6507190B1 (en) 2000-08-01 2003-01-14 Ge Medical Systems Global Technologies Company Llc Method and apparatus for compensating polarizing fields in magnetic resonance imaging
JP2002159463A (ja) * 2000-11-15 2002-06-04 Ge Medical Systems Global Technology Co Llc Ｍｒｉ装置の磁界変動測定方法、磁界変動補償方法およびｍｒｉ装置
US6342787B1 (en) 2000-11-22 2002-01-29 Philips Medical Systems (Cleveland) Real-time multi-axis gradient distortion correction using an interactive shim set
DE10206192B4 (de) * 2002-02-14 2005-05-04 Siemens Ag Verfahren zum Darstellen eines Magnetresonanzbildes
DE10250913A1 (de) * 2002-10-31 2004-05-19 Siemens Ag Verfahren zur Anregung planarer Schichten in einem Magnetresonanz- Tomographiegerät unter Berücksichtigung nichtlinearer Gradientenfelder
DE10252852B4 (de) * 2002-11-13 2007-08-02 Siemens Ag Anwender-Schnittstelle zur korrekten Planung bzw. Positionierung von Meßschichten auf korrigierten MRT-Bildern
AU2002953540A0 (en) * 2002-12-24 2003-01-16 The University Of Queensland Correction of non-linear gradients effects on magnetic resonance imaging
US6873153B2 (en) * 2003-07-07 2005-03-29 Yeda Research And Development Co., Ltd. Method and apparatus for acquiring multidimensional spectra and improved unidimensional spectra within a single scan
JP4619674B2 (ja) * 2004-03-24 2011-01-26 株式会社東芝 磁気共鳴イメージング装置
WO2006028588A2 (en) * 2004-07-22 2006-03-16 The Regents Of The University Of California Nuclear magnetic resonance detection in inhomogeneous magnetic fields
US7132826B1 (en) 2005-11-30 2006-11-07 Wisconsin Alumni Research Foundation Characterization of receiver demodulation for correcting off-axis MR imaging degradation
US7847545B2 (en) * 2008-04-11 2010-12-07 General Electric Company System and method for correcting flow velocity measurements in phase contrast imaging using magnetic field monitoring
US9453897B2 (en) * 2010-08-26 2016-09-27 Hitachi Medical Corporation Magnetic resonance imaging apparatus and vibrational error magnetic field reduction method
CN102866369B (zh) * 2011-12-12 2014-12-24 中国科学院深圳先进技术研究院 磁共振的主磁场漂移矫正方法和系统
CN102846319B (zh) * 2011-12-12 2014-04-16 中国科学院深圳先进技术研究院 基于磁共振的脑功能成像扫描方法和系统
US8520968B1 (en) * 2012-02-23 2013-08-27 Telefonaktiebolaget L M Ericsson (Publ) Communication signal image suppression for multi-frequency operation
FR3000556B1 (fr) * 2012-12-28 2016-03-25 Univ Aix Marseille Procede de correction de phase et/ou de frequence d’au moins un signal de decroissance libre d’induction (fid)
DE102014220776B4 (de) * 2014-10-14 2016-06-30 Siemens Healthcare Gmbh Verfahren zur Magnetresonanz-Bildgebung
CN107615080A (zh) 2015-05-29 2018-01-19 梅约医学教育与研究基金会 用于在具有非对称梯度的磁共振成像中进行伴随场校正的系统和方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700266A (nl) * 1987-02-04 1988-09-01 Philips Nv Werkwijze en inrichting voor het onderdrukken van coherente storingen bij magnetische resonantiesignalen.
NL8701642A (nl) * 1987-07-13 1989-02-01 Philips Nv Werkwijze en inrichting voor het uitvoeren van een fasecorrectie bij mr angiografie.
DE3730148A1 (de) * 1987-09-09 1989-03-30 Bruker Medizintech Verfahren zum erzeugen von spin-echo-impulsfolgen mit einem kernspin-tomographen und zur durchfuehrung des verfahrens ausgebildeter kernspin-tomograph
US5113865A (en) * 1988-04-06 1992-05-19 Hitachi Medical Corporation Method and apparatus for correction of phase distortion in MR imaging system
US4885542A (en) * 1988-04-14 1989-12-05 The Regents Of The University Of California MRI compensated for spurious NMR frequency/phase shifts caused by spurious changes in magnetic fields during NMR data measurement processes
US4970457A (en) * 1989-04-05 1990-11-13 The Regents Of The University Of California MRI compensated for spurious rapid variations in static magnetic field during a single MRI sequence
US4952877A (en) * 1989-08-11 1990-08-28 General Electric Company RF synthesizer or an NMR instrument
US5140268A (en) * 1990-06-15 1992-08-18 The Board Of Trustees Of The Leland Stanford Junior University Method and means for correcting RF amplifier distortion in magnetic resonance imaging

Also Published As

Publication number Publication date
US5289127A (en) 1994-02-22
EP0538668A1 (de) 1993-04-28
DE69211806D1 (de) 1996-08-01
EP0538668B1 (de) 1996-06-26

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