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DE69938713D1 - Verfahren und gerät der magnetischen resonanz - Google Patents

Verfahren und gerät der magnetischen resonanz

Info

Publication number
DE69938713D1
DE69938713D1 DE69938713T DE69938713T DE69938713D1 DE 69938713 D1 DE69938713 D1 DE 69938713D1 DE 69938713 T DE69938713 T DE 69938713T DE 69938713 T DE69938713 T DE 69938713T DE 69938713 D1 DE69938713 D1 DE 69938713D1
Authority
DE
Germany
Prior art keywords
magnetic resonance
resonance
magnetic
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
DE69938713T
Other languages
English (en)
Inventor
Den Brink Johan S Van
Muiswinkel Arianne M Van
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics 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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Application granted granted Critical
Publication of DE69938713D1 publication Critical patent/DE69938713D1/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
    • G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
    • G01R33/56341—Diffusion imaging
    • 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
    • G01R33/56554—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by acquiring plural, differently encoded echo signals after one RF excitation, e.g. correction for readout gradients of alternating polarity in EPI

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (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)
DE69938713T 1998-11-25 1999-11-12 Verfahren und gerät der magnetischen resonanz Expired - Lifetime DE69938713D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98203985 1998-11-25
PCT/EP1999/008938 WO2000031559A1 (en) 1998-11-25 1999-11-12 Magnetic resonance method and device

Publications (1)

Publication Number Publication Date
DE69938713D1 true DE69938713D1 (de) 2008-06-26

Family

ID=8234388

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69938713T Expired - Lifetime DE69938713D1 (de) 1998-11-25 1999-11-12 Verfahren und gerät der magnetischen resonanz

Country Status (5)

Country Link
US (1) US6331777B1 (de)
EP (1) EP1049940B1 (de)
JP (1) JP2002530173A (de)
DE (1) DE69938713D1 (de)
WO (1) WO2000031559A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1082690A1 (de) * 1999-03-30 2001-03-14 Koninklijke Philips Electronics N.V. Ableitung von zeitgemittelten momenten
US6424153B1 (en) * 1999-11-23 2002-07-23 Koninklijke Philips Electronics, N.V. On-the-fly removal of data inconsistency with k-space oversampling and demodulation in MRI acquisitions
DE10163815A1 (de) 2001-12-22 2003-07-03 Philips Intellectual Property Paralleles MR-Bildgebungsverfahren
JP4141147B2 (ja) 2002-02-01 2008-08-27 株式会社日立メディコ 磁気共鳴イメージング装置
US6859203B2 (en) * 2002-05-15 2005-02-22 Koninklijke Philips Electronics N.V. Sweeping real-time single point fiber
EP1554596A1 (de) 2002-10-11 2005-07-20 Koninklijke Philips Electronics N.V. Magnetresonanzverfahren und einrichtung
DE102004017852B4 (de) * 2004-04-13 2008-11-27 Siemens Ag Bewegungskorrigiertes Multi-Shot-Verfahren zur diffusionsgewichteten Bildgebung in der Magnetresonanztomographie
US7112964B2 (en) * 2004-08-02 2006-09-26 General Electric Company Eddy current measurement and correction in magnetic resonance imaging systems with a static phantom
DE102006017049B3 (de) * 2006-04-11 2008-02-14 Siemens Ag Verfahren zur Aufnahme von Magnet-Resonanz-Bilddaten und Magnet-Resonanz-Gerät
US7905282B2 (en) * 2007-02-27 2011-03-15 Schlumberger Technology Corporation Latchable carrier assembly for pipe conveyed well logging
US7896074B2 (en) * 2007-02-27 2011-03-01 Schlumberger Technology Corporation Carrier assembly for a pipe conveyed well logging assembly
US7874359B2 (en) * 2007-02-27 2011-01-25 Schlumberger Technology Corporation Methods of retrieving data from a pipe conveyed well logging assembly
JP5416960B2 (ja) * 2008-12-17 2014-02-12 株式会社東芝 磁気共鳴イメージング装置
JP5611882B2 (ja) * 2010-05-31 2014-10-22 株式会社東芝 磁気共鳴イメージング装置
JP5925529B2 (ja) * 2011-03-31 2016-05-25 株式会社東芝 磁気共鳴イメージング装置
JP6109598B2 (ja) * 2013-02-26 2017-04-05 東芝メディカルシステムズ株式会社 磁気共鳴イメージング装置
JP5762476B2 (ja) * 2013-07-05 2015-08-12 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 磁気共鳴装置およびプログラム
DE102019209079A1 (de) * 2019-06-24 2020-12-24 Siemens Healthcare Gmbh Verfahren zur Vermessung von Wirbelstromfeldern in einer Magnetresonanzeinrichtung, Magnetresonanzeinrichtung, Computerprogramm und elektronisch lesbarer Datenträger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5864233A (en) * 1997-02-22 1999-01-26 General Electric Company Method to reduce eddy current effects in diffusion-weighted echo planar imaging
JP2000511815A (ja) * 1997-04-11 2000-09-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ シフトエコーｍｒ方法及び装置
JP2000512533A (ja) * 1997-04-17 2000-09-26 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 拡散重み付けｍｒｉ方法
WO1998047015A1 (en) * 1997-04-17 1998-10-22 Koninklijke Philips Electronics N.V. Diffusion-weighted mri method
JP3815585B2 (ja) * 1997-10-17 2006-08-30 株式会社日立メディコ 磁気共鳴イメージング装置

Also Published As

Publication number Publication date
WO2000031559A1 (en) 2000-06-02
US6331777B1 (en) 2001-12-18
EP1049940A1 (de) 2000-11-08
JP2002530173A (ja) 2002-09-17
EP1049940B1 (de) 2008-05-14

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Legal Events

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8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition