WO2008136274A1 - 磁気共鳴イメージング装置及び方法 - Google Patents

磁気共鳴イメージング装置及び方法 Download PDF

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Publication number
WO2008136274A1
WO2008136274A1 PCT/JP2008/057502 JP2008057502W WO2008136274A1 WO 2008136274 A1 WO2008136274 A1 WO 2008136274A1 JP 2008057502 W JP2008057502 W JP 2008057502W WO 2008136274 A1 WO2008136274 A1 WO 2008136274A1
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WO
WIPO (PCT)
Prior art keywords
sequence
data
imaging system
magnetic resonance
dimensional area
Prior art date
Application number
PCT/JP2008/057502
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English (en)
French (fr)
Inventor
Naoya Kitamoto
Original Assignee
Hitachi Medical Corporation
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 Hitachi Medical Corporation filed Critical Hitachi Medical Corporation
Priority to JP2009512921A priority Critical patent/JPWO2008136274A1/ja
Priority to US12/593,652 priority patent/US8148980B2/en
Publication of WO2008136274A1 publication Critical patent/WO2008136274A1/ja

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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
    • G01R33/561—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
    • G01R33/561—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]
    • G01R33/5617—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 RF refocusing, e.g. RARE
    • 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
    • G01R33/5602—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by filtering or weighting based on different relaxation times within the sample, e.g. T1 weighting using an inversion pulse
    • 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
    • G01R33/5607—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reducing the NMR signal of a particular spin species, e.g. of a chemical species for fat suppression, or of a moving spin species for black-blood 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
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0
    • 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
    • G01R33/56572—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of a gradient magnetic field, e.g. non-linearity of a gradient magnetic field
    • 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
    • G01R33/5659—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field

Landscapes

  • 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

　前記制御部は、前記パルスシーケンスとして、k空間の所定の二次元領域のデータを取得する第1シーケンスと、前記被検体に反転回復パルスを照射して、画像再構成に必要なデータを取得する第2シーケンスとを実行させ、第1シーケンスにおいて取得した前記二次元領域のデータを用いて、前記第2シーケンスで取得したデータの位相を補正し、 　前記信号処理部は、補正後のデータを用いて、実数成分画像を再構成することを特徴とする磁気共鳴イメージング装置において、 前記制御部は、前記第1のシーケンスを実行する際に、位相エンコード量を変えながら前記k空間の所定の二次元領域のデータを取得する。
PCT/JP2008/057502 2007-04-27 2008-04-17 磁気共鳴イメージング装置及び方法 WO2008136274A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009512921A JPWO2008136274A1 (ja) 2007-04-27 2008-04-17 磁気共鳴イメージング装置及び方法
US12/593,652 US8148980B2 (en) 2007-04-27 2008-04-17 Magnetic resonance imaging system and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-119247 2007-04-27
JP2007119247 2007-04-27

Publications (1)

Publication Number Publication Date
WO2008136274A1 true WO2008136274A1 (ja) 2008-11-13

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PCT/JP2008/057502 WO2008136274A1 (ja) 2007-04-27 2008-04-17 磁気共鳴イメージング装置及び方法

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US (1) US8148980B2 (ja)
JP (1) JPWO2008136274A1 (ja)
WO (1) WO2008136274A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012065736A (ja) * 2010-09-22 2012-04-05 Hitachi Medical Corp 磁気共鳴イメージング装置及び実数成分画像取得方法
JP2015013061A (ja) * 2013-07-08 2015-01-22 株式会社日立メディコ 磁気共鳴イメージング装置及び実数成分画像取得方法
JP2017140532A (ja) * 2009-09-18 2017-08-17 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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012151551A2 (en) * 2011-05-04 2012-11-08 Oregon Health And Science University Method and apparatus for using magnetic resonance imaging for cartilage assessment and monitoring
KR20130049461A (ko) * 2011-11-04 2013-05-14 삼성전자주식회사 자기 공명 영상 촬상 방법 및 장치
CN105640554B (zh) * 2014-11-12 2017-11-28 上海联影医疗科技有限公司 磁共振成像方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002085376A (ja) * 2000-09-20 2002-03-26 Hitachi Medical Corp 核磁気共鳴イメージング装置および方法
JP2004073538A (ja) * 2002-08-20 2004-03-11 Ge Medical Systems Global Technology Co Llc 磁気共鳴撮影装置
JP3576069B2 (ja) * 2000-04-27 2004-10-13 株式会社東芝 Ｍｒｉ装置
JP2006081704A (ja) * 2004-09-16 2006-03-30 Hitachi Medical Corp 磁気共鳴イメージング装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01250236A (ja) * 1988-03-31 1989-10-05 Toshiba Corp 磁気共鳴映像装置
US7797031B1 (en) * 2002-05-17 2010-09-14 General Electric Company Method and apparatus for breath-held MR data acquisition using interleaved acquisition
JP4613065B2 (ja) * 2002-08-27 2011-01-12 ケネディー クリーガー インスティチュート 微小血管の血液容量の磁気共鳴画像化
US7821265B2 (en) * 2008-03-04 2010-10-26 General Electric Co. Method and apparatus for acquiring MRI data for pulse sequences with multiple phase encode directions and periodic signal modulation
US8143891B2 (en) * 2008-08-29 2012-03-27 Siemens Aktiengesellschaft System for image acquisition with fast magnetic resonance gradient echo sequences

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3576069B2 (ja) * 2000-04-27 2004-10-13 株式会社東芝 Ｍｒｉ装置
JP2002085376A (ja) * 2000-09-20 2002-03-26 Hitachi Medical Corp 核磁気共鳴イメージング装置および方法
JP2004073538A (ja) * 2002-08-20 2004-03-11 Ge Medical Systems Global Technology Co Llc 磁気共鳴撮影装置
JP2006081704A (ja) * 2004-09-16 2006-03-30 Hitachi Medical Corp 磁気共鳴イメージング装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017140532A (ja) * 2009-09-18 2017-08-17 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
US10058257B2 (en) 2009-09-18 2018-08-28 Toshiba Medical Systems Corporation Magnetic resonance imaging apparatus and magnetic resonance imaging method
JP2012065736A (ja) * 2010-09-22 2012-04-05 Hitachi Medical Corp 磁気共鳴イメージング装置及び実数成分画像取得方法
JP2015013061A (ja) * 2013-07-08 2015-01-22 株式会社日立メディコ 磁気共鳴イメージング装置及び実数成分画像取得方法

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US8148980B2 (en) 2012-04-03
JPWO2008136274A1 (ja) 2010-07-29
US20100134107A1 (en) 2010-06-03

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