WO2008152937A1 - 磁気共鳴イメージング装置及び傾斜磁場に起因する誤差補正方法 - Google Patents

磁気共鳴イメージング装置及び傾斜磁場に起因する誤差補正方法 Download PDF

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Publication number
WO2008152937A1
WO2008152937A1 PCT/JP2008/060178 JP2008060178W WO2008152937A1 WO 2008152937 A1 WO2008152937 A1 WO 2008152937A1 JP 2008060178 W JP2008060178 W JP 2008060178W WO 2008152937 A1 WO2008152937 A1 WO 2008152937A1
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WIPO (PCT)
Prior art keywords
magnetic field
gradient magnetic
imaging apparatus
resonance imaging
error due
Prior art date
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Ceased
Application number
PCT/JP2008/060178
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English (en)
French (fr)
Inventor
Masahiro Takizawa
Tetsuhiko Takahashi
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Hitachi Healthcare Manufacturing Ltd
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Hitachi Medical Corp
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Publication date
Application filed by Hitachi Medical Corp filed Critical Hitachi Medical Corp
Priority to JP2009519225A priority Critical patent/JP5399240B2/ja
Priority to EP08764991.9A priority patent/EP2158842A4/en
Priority to CN2008800195676A priority patent/CN101711126B/zh
Priority to US12/601,378 priority patent/US8154294B2/en
Publication of WO2008152937A1 publication Critical patent/WO2008152937A1/ja
Anticipated expiration legal-status Critical
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
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the 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
    • G01R33/4818—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
    • G01R33/482—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 using a Cartesian trajectory
    • 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
    • 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
    • G01R33/4824—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 using a non-Cartesian trajectory

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  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General 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)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

　非直交系サンプリング法において、傾斜磁場の誤差に起因する画像上のアーチファクトを低減するため、画像再構成に用いるデータを取得する際、傾斜磁場に起因する誤差を補正するためのデータを取得し、取得した補正のためのデータを用いて画像再構成に用いるデータを補正する。誤差を補正するためのデータを取得するため、平行な複数のエコー信号を有するブロックの計測を行う。
PCT/JP2008/060178 2007-06-14 2008-06-03 磁気共鳴イメージング装置及び傾斜磁場に起因する誤差補正方法 Ceased WO2008152937A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009519225A JP5399240B2 (ja) 2007-06-14 2008-06-03 磁気共鳴イメージング装置及び傾斜磁場に起因する誤差補正方法
EP08764991.9A EP2158842A4 (en) 2007-06-14 2008-06-03 Nuclear Magnetography Device and Method for Correcting Errors Based on the Magnification Magnet Field
CN2008800195676A CN101711126B (zh) 2007-06-14 2008-06-03 磁共振成像装置及由倾斜磁场引起的误差修正方法
US12/601,378 US8154294B2 (en) 2007-06-14 2008-06-03 Magnetic resonance imaging apparatus and method for correcting error due to gradient magnetic field

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-157303 2007-06-14
JP2007157303 2007-06-14

Publications (1)

Publication Number Publication Date
WO2008152937A1 true WO2008152937A1 (ja) 2008-12-18

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PCT/JP2008/060178 Ceased WO2008152937A1 (ja) 2007-06-14 2008-06-03 磁気共鳴イメージング装置及び傾斜磁場に起因する誤差補正方法

Country Status (5)

Country Link
US (1) US8154294B2 (ja)
EP (1) EP2158842A4 (ja)
JP (1) JP5399240B2 (ja)
CN (1) CN101711126B (ja)
WO (1) WO2008152937A1 (ja)

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CN102959425A (zh) * 2010-04-29 2013-03-06 伊利诺伊大学受托管理委员会 使用转向螺旋桨技术的磁共振成像
US20130170727A1 (en) * 2010-09-27 2013-07-04 Miyuki Kawamura Magnetic resonance imaging apparatus and magnetic resonance imaging method
WO2014185323A1 (ja) * 2013-05-17 2014-11-20 株式会社 日立メディコ 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
WO2015033779A1 (ja) * 2013-09-03 2015-03-12 株式会社 日立メディコ 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
JP2015173897A (ja) * 2014-03-17 2015-10-05 株式会社東芝 磁気共鳴イメージング装置
KR101819908B1 (ko) 2016-05-27 2018-01-18 한국과학기술원 자기공명 영상 생성방법 및 그를 위한 장치
JP2020137923A (ja) * 2019-03-01 2020-09-03 キヤノン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及び磁気共鳴イメージング方法

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JP5611882B2 (ja) * 2010-05-31 2014-10-22 株式会社東芝 磁気共鳴イメージング装置
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JP5925529B2 (ja) * 2011-03-31 2016-05-25 株式会社東芝 磁気共鳴イメージング装置
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DE102011088553B4 (de) * 2011-12-14 2013-11-28 Siemens Aktiengesellschaft Korrektur einer zeitlichen Abweichung von k-Raum-Punkten bei MRI-Verfahren
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DE102012209955B4 (de) * 2012-06-14 2014-02-20 Siemens Aktiengesellschaft Test eines Reordering-Algorithmus einer Spinecho-Magnetresonanzpulssequenz
CN103513204B (zh) * 2012-06-29 2016-03-30 西门子(深圳)磁共振有限公司 一种磁共振成像中k空间数据的轨迹校正方法和装置
CN104918546B (zh) * 2013-02-12 2018-01-02 株式会社日立制作所 磁共振成像装置及其处理方法
KR101474757B1 (ko) * 2013-07-08 2014-12-19 삼성전자주식회사 자장 측정 방법 및 장치
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JP5661473B2 (ja) * 2008-12-26 2015-01-28 株式会社日立メディコ 磁気共鳴イメージング装置及び読み出し傾斜磁場誤差補正方法
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JPWO2015033779A1 (ja) * 2013-09-03 2017-03-02 株式会社日立製作所 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
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KR101819908B1 (ko) 2016-05-27 2018-01-18 한국과학기술원 자기공명 영상 생성방법 및 그를 위한 장치
JP2020137923A (ja) * 2019-03-01 2020-09-03 キヤノン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及び磁気共鳴イメージング方法
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JP7245076B2 (ja) 2019-03-01 2023-03-23 キヤノン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及び磁気共鳴イメージング方法

Also Published As

Publication number Publication date
US20100164495A1 (en) 2010-07-01
JPWO2008152937A1 (ja) 2010-08-26
CN101711126B (zh) 2012-03-28
EP2158842A1 (en) 2010-03-03
JP5399240B2 (ja) 2014-01-29
CN101711126A (zh) 2010-05-19
US8154294B2 (en) 2012-04-10
EP2158842A4 (en) 2014-11-05

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