WO2002068978A3 - Verfahren und gerät zum gewinnen von daten für diffusionsgewichtete magnetresonanz-bildgebung - Google Patents

Verfahren und gerät zum gewinnen von daten für diffusionsgewichtete magnetresonanz-bildgebung Download PDF

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Publication number
WO2002068978A3
WO2002068978A3 PCT/DE2002/000647 DE0200647W WO02068978A3 WO 2002068978 A3 WO2002068978 A3 WO 2002068978A3 DE 0200647 W DE0200647 W DE 0200647W WO 02068978 A3 WO02068978 A3 WO 02068978A3
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WIPO (PCT)
Prior art keywords
diffusion
magnetic resonance
resonance imaging
phase changes
acquiring data
Prior art date
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Ceased
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PCT/DE2002/000647
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English (en)
French (fr)
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WO2002068978A2 (de
Inventor
David Norris
Wolfgang Driesel
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Max Planck Gesellschaft zur Foerderung der Wissenschaften eV
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Max Planck Gesellschaft zur Foerderung der Wissenschaften eV
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Priority to EP02716613A priority Critical patent/EP1415172A2/de
Priority to JP2002568043A priority patent/JP2004526491A/ja
Priority to US10/468,159 priority patent/US6842000B2/en
Publication of WO2002068978A2 publication Critical patent/WO2002068978A2/de
Anticipated expiration legal-status Critical
Publication of WO2002068978A3 publication Critical patent/WO2002068978A3/de
Ceased legal-status Critical Current

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    • 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
    • G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
    • 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

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  • 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)

Abstract

Beschrieben wird ein Magnetresonanz-Bildgebungsverfahren, bei welchem die im abzubildenden Objekt angeregte transversale Magnetisierung vor dem Hervorrufen der für die Rekonstruktion eines Bildes verwendeten Nutzechos (E) diffusionsgewichtet wird. Bei Bewegung des Objektes können Phasenänderungen in der diffusionsgewichteten transversalen Magnetisierung auftreten, die zu Artefakten im rekonstruierten Bild führen. Diese störenden Phasenänderungen werden durch Analyse eines Navigatorsignals (N1, N2) gemessen, das vor dem Hervorrufen der Nutzechos (E) erzeugt wird. Das Ergebnis dieser Messung wird verwendet, um die Phasencharakteristik der transversalen Magnetisierung online durch korrigierenden Eingriff (C0, C1, C2) so zu ändern, daß die gemessenen Phasenänderungen kompensiert werden. Beschrieben wird ferner ein Magnetresonanzgerät zur Durchführung dieses Verfahrens.
PCT/DE2002/000647 2001-02-28 2002-02-21 Verfahren und gerät zum gewinnen von daten für diffusionsgewichtete magnetresonanz-bildgebung Ceased WO2002068978A2 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02716613A EP1415172A2 (de) 2001-02-28 2002-02-21 Verfahren und gerät zum gewinnen von daten für diffusionsgewichtete magnetresonanz-bildgebung
JP2002568043A JP2004526491A (ja) 2001-02-28 2002-02-21 拡散強調された磁気共鳴画像化データの取得方法および装置
US10/468,159 US6842000B2 (en) 2001-02-28 2002-02-21 Method and device for acquiring data for diffusion-weighted magnetic resonance imaging

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10109511.2 2001-02-28
DE10109511A DE10109511C2 (de) 2001-02-28 2001-02-28 Verfahren und Gerät zum Gewinnen von Daten für diffusionsgewichtete Magnetresonanz-Bildgebung

Publications (2)

Publication Number Publication Date
WO2002068978A2 WO2002068978A2 (de) 2002-09-06
WO2002068978A3 true WO2002068978A3 (de) 2004-03-04

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PCT/DE2002/000647 Ceased WO2002068978A2 (de) 2001-02-28 2002-02-21 Verfahren und gerät zum gewinnen von daten für diffusionsgewichtete magnetresonanz-bildgebung

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US (1) US6842000B2 (de)
EP (1) EP1415172A2 (de)
JP (1) JP2004526491A (de)
DE (1) DE10109511C2 (de)
WO (1) WO2002068978A2 (de)

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Also Published As

Publication number Publication date
WO2002068978A2 (de) 2002-09-06
DE10109511A1 (de) 2002-09-19
DE10109511C2 (de) 2003-03-27
JP2004526491A (ja) 2004-09-02
EP1415172A2 (de) 2004-05-06
US20040071324A1 (en) 2004-04-15
US6842000B2 (en) 2005-01-11

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