WO2007004123A3 - Séquence de navigateur d'irm à magnétisation restaurée - Google Patents

Séquence de navigateur d'irm à magnétisation restaurée Download PDF

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Publication number
WO2007004123A3
WO2007004123A3 PCT/IB2006/052116 IB2006052116W WO2007004123A3 WO 2007004123 A3 WO2007004123 A3 WO 2007004123A3 IB 2006052116 W IB2006052116 W IB 2006052116W WO 2007004123 A3 WO2007004123 A3 WO 2007004123A3
Authority
WO
WIPO (PCT)
Prior art keywords
navigator
magnetization
signals
sequence
mri
Prior art date
Application number
PCT/IB2006/052116
Other languages
English (en)
Other versions
WO2007004123A2 (fr
Inventor
Gabriele M Beck
Ijperen Gerrit H Van
Original Assignee
Koninkl Philips Electronics Nv
Gabriele M Beck
Ijperen Gerrit H Van
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 Koninkl Philips Electronics Nv, Gabriele M Beck, Ijperen Gerrit H Van filed Critical Koninkl Philips Electronics Nv
Publication of WO2007004123A2 publication Critical patent/WO2007004123A2/fr
Publication of WO2007004123A3 publication Critical patent/WO2007004123A3/fr

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
    • G01R33/567—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution gated by physiological signals, i.e. synchronization of acquired MR data with periodical motion of an object of interest, e.g. monitoring or triggering system for cardiac or respiratory gating
    • G01R33/5676—Gating or triggering based on an MR signal, e.g. involving one or more navigator echoes for motion monitoring and correction

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Cardiology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Physiology (AREA)
  • Power Engineering (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

L'invention concerne un procédé d'imagerie par résonance magnétique (IRM) d'au moins une partie d'un corps placé dans un champ magnétique principal fixe et sensiblement homogène. Selon ce procédé, une magnétisation nucléaire est excitée à l'intérieur d'un volume de navigateur limité dans l'espace par exposition de ladite partie à une séquence de navigateur (NAV) à partir de laquelle des signaux de navigateur RM sont mesurés. La magnétisation nucléaire à l'intérieur dudit volume de navigateur est ensuite retransformée en magnétisation longitudinale par exposition de ladite partie à une séquence de suppression du navigateur (UNLBL). Pour finir, une série de signaux d'imagerie RM est générée par exposition de ladite partie à une séquence d'imagerie (TFE). Ces signaux d'imagerie RM sont mesurés pour reconstruire une image RM à partir desdits signaux.
PCT/IB2006/052116 2005-06-30 2006-06-27 Séquence de navigateur d'irm à magnétisation restaurée WO2007004123A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05105892.3 2005-06-30
EP05105892 2005-06-30

Publications (2)

Publication Number Publication Date
WO2007004123A2 WO2007004123A2 (fr) 2007-01-11
WO2007004123A3 true WO2007004123A3 (fr) 2007-05-03

Family

ID=37604857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/052116 WO2007004123A2 (fr) 2005-06-30 2006-06-27 Séquence de navigateur d'irm à magnétisation restaurée

Country Status (1)

Country Link
WO (1) WO2007004123A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008041060A1 (fr) * 2006-10-05 2008-04-10 Koninklijke Philips Electronics N.V. séquence de navigateur IRM avec magnétisation restaurée
EP2320245A1 (fr) 2009-11-05 2011-05-11 Koninklijke Philips Electronics N.V. Imagerie par résonance magnétique nucléaire utilisant des navigateurs
US8797031B2 (en) * 2011-01-27 2014-08-05 Siemens Medical Solutions Usa, Inc. MR imaging system for discriminating between imaged tissue types

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004034075A1 (fr) * 2002-10-11 2004-04-22 Koninklijke Philips Electronics N.V. Procede par resonance magnetique et dispositif correspondant
JP2005021488A (ja) * 2003-07-04 2005-01-27 Hitachi Medical Corp 磁気共鳴イメージング装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004034075A1 (fr) * 2002-10-11 2004-04-22 Koninklijke Philips Electronics N.V. Procede par resonance magnetique et dispositif correspondant
JP2005021488A (ja) * 2003-07-04 2005-01-27 Hitachi Medical Corp 磁気共鳴イメージング装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STUBER M ET AL: "THREE-DIMENSIONAL HIGH-RESOLUTION FAST SPIN-ECHO CORONARY MAGNETIC RESONANCE ANGIOGRAPHY", MAGNETIC RESONANCE IN MEDICINE, ACADEMIC PRESS, DULUTH, MN, US, vol. 45, no. 2, February 2001 (2001-02-01), pages 206 - 211, XP001165735, ISSN: 0740-3194 *

Also Published As

Publication number Publication date
WO2007004123A2 (fr) 2007-01-11

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