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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WO
WIPO (PCT)
Prior art keywords
magnetic field
gradient magnetic
imaging apparatus
resonance imaging
error due
Prior art date
Application number
PCT/JP2008/060178
Other languages
English (en)
French (fr)
Inventor
Masahiro Takizawa
Tetsuhiko Takahashi
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 US12/601,378 priority Critical patent/US8154294B2/en
Priority to CN2008800195676A priority patent/CN101711126B/zh
Priority to EP08764991.9A priority patent/EP2158842A4/en
Priority to JP2009519225A priority patent/JP5399240B2/ja
Publication of WO2008152937A1 publication Critical patent/WO2008152937A1/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
    • G01R33/565—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

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 WO2008152937A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
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
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
EP08764991.9A EP2158842A4 (en) 2007-06-14 2008-06-03 Nuclear Magnetography Device and Method for Correcting Errors Based on the Magnification Magnet Field
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

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

Family

ID=40129547

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/060178 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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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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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
US8154294B2 (en) 2012-04-10
CN101711126B (zh) 2012-03-28
CN101711126A (zh) 2010-05-19
US20100164495A1 (en) 2010-07-01
EP2158842A1 (en) 2010-03-03
JP5399240B2 (ja) 2014-01-29
EP2158842A4 (en) 2014-11-05
JPWO2008152937A1 (ja) 2010-08-26

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