IN2014MN02265A - - Google Patents

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Publication number
IN2014MN02265A
IN2014MN02265A IN2265MUN2014A IN2014MN02265A IN 2014MN02265 A IN2014MN02265 A IN 2014MN02265A IN 2265MUN2014 A IN2265MUN2014 A IN 2265MUN2014A IN 2014MN02265 A IN2014MN02265 A IN 2014MN02265A
Authority
IN
India
Prior art keywords
time
isotropic diffusion
diffusion weighting
orientation
discretely
Prior art date
Application number
Inventor
Daniel Topgaard
Samo Lasic
Markus Nilsson
Original Assignee
Cr Dev Ab
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 Cr Dev Ab filed Critical Cr Dev Ab
Publication of IN2014MN02265A publication Critical patent/IN2014MN02265A/en

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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
    • 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
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • 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
    • 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
    • G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
    • 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
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE
    • 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
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Vascular Medicine (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

The present invention describes a method for magnetic resonance (MR) and/or MR imaging comprising acquisition of signals and MR images originating from a RF and gradient sequence causing isotropic diffusion weighting of signal attenuation wherein the isotropic diffusion weighting is achieved by one time dependent dephasing vector q(t)having an orientation wherein the isotropic diffusion weighting is proportional to the trace of a diffusion tensor D and wherein the orientation of the time dependent dephasing vector q() is either varied discretely in more than three directions in total or changed continuously or changed in a combination of discretely and continuously during the gradient pulse sequence 0 = = echo time where represents the time. The method may be performed during a single shot (single MR excitation).
IN2265MUN2014 2012-05-04 2013-05-03 IN2014MN02265A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261642594P 2012-05-04 2012-05-04
SE1250452A SE537065C2 (en) 2012-05-04 2012-05-04 Pulse sequence procedure for MRI
PCT/SE2013/050492 WO2013165312A1 (en) 2012-05-04 2013-05-03 Pulse sequence method for mri

Publications (1)

Publication Number Publication Date
IN2014MN02265A true IN2014MN02265A (en) 2015-07-24

Family

ID=49514596

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2265MUN2014 IN2014MN02265A (en) 2012-05-04 2013-05-03

Country Status (11)

Country Link
US (2) US9791534B2 (en)
EP (1) EP2847607B1 (en)
JP (1) JP6280540B2 (en)
KR (1) KR102115627B1 (en)
CN (1) CN104471425B (en)
AU (1) AU2013257305B2 (en)
BR (1) BR112014027060B1 (en)
CA (1) CA2872348C (en)
IN (1) IN2014MN02265A (en)
SE (1) SE537065C2 (en)
WO (1) WO2013165312A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE537064C2 (en) * 2012-05-04 2014-12-23 Cr Dev Ab Analysis for quantification of microscopic anisotropic diffusion
EP3105606B1 (en) * 2014-02-10 2022-02-09 CR Development AB Method for quantifying isotropic diffusion and/or anisotropic diffusion in a sample
EP3394628A1 (en) * 2015-12-22 2018-10-31 Koninklijke Philips N.V. Dti with correction of motion-induced diffusion gradient inconsistency
JP7218288B2 (en) * 2016-11-09 2023-02-06 ランダム ウォーク イメージング アーベー How to perform diffusion-weighted magnetic resonance measurements on a sample
US11728038B2 (en) * 2017-04-06 2023-08-15 Oregon Health & Science University Activity MRI
CN107219483B (en) * 2017-04-22 2019-11-26 天津大学 A kind of radial kurtosis anisotropic quantitative approach based on diffusion kurtosis imaging

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
WO1997007731A2 (en) * 1995-08-18 1997-03-06 Brigham And Women's Hospital, Inc. Line scan diffusion imaging
EP1204880A1 (en) 1999-05-21 2002-05-15 National Institutes of Health, as represented by the Secretary, Department of Health and Human Services of the Government Determination of an empirical statistical distribution of the diffusion tensor in mri
US6288540B1 (en) * 1999-05-21 2001-09-11 University Of Rochester Optimized orthogonal gradient technique for fast quantitative diffusion MRI on a clinical scanner
US6724190B2 (en) * 2002-05-15 2004-04-20 Koninklijke Philips Electronics N.V. Retrospective selection and various types of image alignment to improve DTI SNR
US6642716B1 (en) 2002-05-15 2003-11-04 Koninklijke Philips Electronics, N.V. Diffusion tensor magnetic resonance imaging including fiber rendering using hyperstreamlines
JP2004081657A (en) 2002-08-28 2004-03-18 Ge Medical Systems Global Technology Co Llc Method for extracting fibrous image, image processing device, and magnetic resonance imaging systems
US7894891B2 (en) 2006-01-24 2011-02-22 Schlumberger Technology Corporation Diffusion-based magnetic resonance methods for characterizing bone structure
US8064982B2 (en) 2006-11-21 2011-11-22 Battelle Memorial Institute Methods for magnetic resonance analysis using magic angle technique
US7355407B1 (en) * 2006-12-03 2008-04-08 Toshiba Medical Systems Corp. Methods and apparatus for single-shot magnetic resonance imaging with optimized isotropic diffusion weighting
WO2008147923A1 (en) * 2007-05-22 2008-12-04 Imaging Biometrics Method for detecting tumor cell invasion using short diffusion times
SE0702063L (en) * 2007-05-31 2009-01-13 Colloidal Resource Ab Method, system, computer-readable medium and use for magnetic resonance imaging
US8526698B2 (en) * 2008-04-14 2013-09-03 Yeda Research & Development Co. Ltd. Method and apparatus for ductal tube tracking imaging for breast cancer detection and diagnosis, and product
JP5591493B2 (en) 2008-07-17 2014-09-17 株式会社東芝 Magnetic resonance imaging system
US9097778B2 (en) * 2009-03-30 2015-08-04 Hitachi, Ltd. Magnetic resonance device with diffusion gradient phase variation positionally corrected
US8274283B2 (en) * 2009-04-27 2012-09-25 Siemens Aktiengesellschaft Method and apparatus for diffusion tensor magnetic resonance imaging
SE0950363A1 (en) * 2009-05-22 2010-06-29 Cr Dev Ab Method and systems for magnetic resonance imaging, and their use.
JP2012066005A (en) 2010-09-27 2012-04-05 Toshiba Corp Magnetic resonance imaging apparatus
SE537064C2 (en) * 2012-05-04 2014-12-23 Cr Dev Ab Analysis for quantification of microscopic anisotropic diffusion

Also Published As

Publication number Publication date
CA2872348C (en) 2019-12-24
JP6280540B2 (en) 2018-02-14
AU2013257305B2 (en) 2017-06-15
CA2872348A1 (en) 2013-11-07
US20180017648A1 (en) 2018-01-18
SE537065C2 (en) 2014-12-23
EP2847607B1 (en) 2020-10-07
AU2013257305A1 (en) 2014-11-27
KR102115627B1 (en) 2020-05-26
US9791534B2 (en) 2017-10-17
BR112014027060A2 (en) 2017-06-27
BR112014027060B1 (en) 2022-03-15
WO2013165312A1 (en) 2013-11-07
CN104471425B (en) 2017-03-01
US20150115957A1 (en) 2015-04-30
SE1250452A1 (en) 2013-11-05
US10295639B2 (en) 2019-05-21
JP2015518408A (en) 2015-07-02
KR20150033602A (en) 2015-04-01
CN104471425A (en) 2015-03-25
EP2847607A1 (en) 2015-03-18
EP2847607A4 (en) 2016-12-14

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