DE69734755D1 - Echoplanar-Bildgebung mit Verschiebung der Echozeit und Bewegungskompensation - Google Patents

Echoplanar-Bildgebung mit Verschiebung der Echozeit und Bewegungskompensation

Info

Publication number
DE69734755D1
DE69734755D1 DE69734755T DE69734755T DE69734755D1 DE 69734755 D1 DE69734755 D1 DE 69734755D1 DE 69734755 T DE69734755 T DE 69734755T DE 69734755 T DE69734755 T DE 69734755T DE 69734755 D1 DE69734755 D1 DE 69734755D1
Authority
DE
Germany
Prior art keywords
motion compensation
time shift
echo time
echoplanar imaging
echoplanar
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 - Fee Related
Application number
DE69734755T
Other languages
English (en)
Other versions
DE69734755T2 (de
Inventor
Petrus Groen
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
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 Philips Electronics NV filed Critical Philips Electronics NV
Publication of DE69734755D1 publication Critical patent/DE69734755D1/de
Application granted granted Critical
Publication of DE69734755T2 publication Critical patent/DE69734755T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01R33/56308—Characterization of motion or flow; Dynamic 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
    • G01R33/561—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]
    • G01R33/5616—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] using gradient refocusing, e.g. EPI
    • 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
    • G01R33/56308—Characterization of motion or flow; Dynamic imaging
    • G01R33/56316—Characterization of motion or flow; Dynamic imaging involving phase contrast techniques

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)
DE69734755T 1996-04-24 1997-04-08 Echoplanar-Bildgebung mit Verschiebung der Echozeit und Bewegungskompensation Expired - Fee Related DE69734755T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP96201103 1996-04-24
EP96201103 1996-04-24
PCT/IB1997/000368 WO1997040395A2 (en) 1996-04-24 1997-04-08 Method of and device for the imaging of objects by means of magnetic resonance

Publications (2)

Publication Number Publication Date
DE69734755D1 true DE69734755D1 (de) 2006-01-05
DE69734755T2 DE69734755T2 (de) 2006-08-03

Family

ID=8223912

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69734755T Expired - Fee Related DE69734755T2 (de) 1996-04-24 1997-04-08 Echoplanar-Bildgebung mit Verschiebung der Echozeit und Bewegungskompensation

Country Status (5)

Country Link
US (1) US5810727A (de)
EP (1) EP0835454B1 (de)
JP (1) JP3838377B2 (de)
DE (1) DE69734755T2 (de)
WO (1) WO1997040395A2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5877629A (en) * 1997-04-08 1999-03-02 General Electric Company Correction for maxwell fields produced during non-rectilinear k-space sampling
US6044290A (en) * 1997-04-11 2000-03-28 Wisconsin Alumni Research Foundation Time-resolved digital subtraction magnetic resonance angiography using echo-planar imaging
US5917323A (en) * 1997-07-01 1999-06-29 General Electric Company Correction of axial image signal fall off caused by Maxwell terms
US6728568B1 (en) * 1999-05-31 2004-04-27 Hitachi Medical Corporation Magnetic resonance imaging method and device
JP3365983B2 (ja) * 1999-09-28 2003-01-14 ジーイー横河メディカルシステム株式会社 Ｍｒｉ装置
US6522139B1 (en) * 2000-11-14 2003-02-18 Koninklijke Philips Electronics, N.V. Calibration of timing delays using alternating/repeating waveforms and EPI
US8036730B1 (en) 2002-04-19 2011-10-11 Fonar Corporation Temporal magnetic resonance imaging
US7123008B1 (en) 2002-04-19 2006-10-17 Fonar Corporation Positional magnetic resonance imaging
JP2008523942A (ja) * 2004-12-21 2008-07-10 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 複数のコントラストを有する磁気共鳴イメージング
JP2007090001A (ja) * 2005-09-30 2007-04-12 Ge Medical Systems Global Technology Co Llc Ｍｒスキャン方法およびｍｒｉ装置
US8401612B1 (en) 2006-09-11 2013-03-19 Fonar Corporation Magnetic resonance imaging system and method for detecting chiari malformations
JP5835989B2 (ja) * 2010-08-11 2015-12-24 株式会社東芝 磁気共鳴イメージング装置および磁気共鳴イメージング方法
WO2012143852A1 (en) * 2011-04-18 2012-10-26 Koninklijke Philips Electronics N.V. Dynamic perfusion imaging
KR101582415B1 (ko) * 2014-06-18 2016-01-04 가천대학교 산학협력단 자기 공명 영상 시스템에서 t2* 및 혈관 영상의 동시 획득 방법
EP3715896B1 (de) * 2019-03-27 2023-02-15 Siemens Healthcare GmbH Minimierung von signalverlusten in der multi-echo-bildgebung
KR102604679B1 (ko) * 2021-07-06 2023-11-23 한국과학기술원 자화준비 이미징을 위한 싱글-샷 의사-센트릭 epi 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4707660A (en) * 1984-09-10 1987-11-17 U.S. Philips Corporation Fast method and device for determining an NMR distribution in a region of a body
US4689560A (en) * 1985-08-16 1987-08-25 Picker International, Inc. Low R.F. dosage magnetic resonance imaging of high velocity flows
US5221898A (en) * 1990-11-30 1993-06-22 Hitachi, Ltd. Flow imaging method using an MRI apparatus
US5270654A (en) * 1991-07-05 1993-12-14 Feinberg David A Ultra-fast multi-section MRI using gradient and spin echo (grase) imaging
EP0690697A1 (de) * 1993-12-24 1996-01-10 Koninklijke Philips Electronics N.V. Bilderzeugung mittels magnetischer resonanz vom grase (gradient- und spin-echo)-typ mit korrektur der auslesegradienten-polarität und t2-messung

Also Published As

Publication number Publication date
JP3838377B2 (ja) 2006-10-25
EP0835454B1 (de) 2005-11-30
WO1997040395A3 (en) 1997-12-04
WO1997040395A2 (en) 1997-10-30
EP0835454A2 (de) 1998-04-15
US5810727A (en) 1998-09-22
DE69734755T2 (de) 2006-08-03
JPH11508177A (ja) 1999-07-21

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee