WO2008111416A1 - 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 - Google Patents

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 Download PDF

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Publication number
WO2008111416A1
WO2008111416A1 PCT/JP2008/053761 JP2008053761W WO2008111416A1 WO 2008111416 A1 WO2008111416 A1 WO 2008111416A1 JP 2008053761 W JP2008053761 W JP 2008053761W WO 2008111416 A1 WO2008111416 A1 WO 2008111416A1
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WO
WIPO (PCT)
Prior art keywords
data
receiving coils
magnetic resonance
resonance imaging
image
Prior art date
Application number
PCT/JP2008/053761
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English (en)
French (fr)
Inventor
Tetsuhiko Takahashi
Masahiro Takizawa
Yasuhiro Kamada
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 US12/529,396 priority Critical patent/US8207734B2/en
Priority to JP2009503969A priority patent/JP5048052B2/ja
Publication of WO2008111416A1 publication Critical patent/WO2008111416A1/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
    • G01R33/5611—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
    • G01R33/4818—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
    • 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]

Abstract

　非直交撮影によって計測したデータに対し実空間での折り返し除去演算を少ない演算量で高速に行なうことが可能なＭＲＩ装置を提供する。互いに異なる感度分布を有する複数の受信コイルを用いて、データ数を間引いた非直交データサンプリングを行う。画像再構成手段は、各受信コイルについて、得られた非直交データを、目的画像と空間分解能が等しく、視野が狭いグリッドにグリッディングして直交データを作成し、これをフーリエ変換して、折り返し成分を含む第１の画像データを作成する。各受信コイルについて作成された第１の画像データ、各受信コイルの感度分布を用いて、折り返しのない第２の画像データを作成する。
PCT/JP2008/053761 2007-03-09 2008-03-03 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 WO2008111416A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/529,396 US8207734B2 (en) 2007-03-09 2008-03-03 Parallel imaging in non-cartesian magnetic resonance imaging (MRI) and MRI apparatus realizing the same
JP2009503969A JP5048052B2 (ja) 2007-03-09 2008-03-03 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

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007059506 2007-03-09
JP2007-059506 2007-03-09

Publications (1)

Publication Number Publication Date
WO2008111416A1 true WO2008111416A1 (ja) 2008-09-18

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PCT/JP2008/053761 WO2008111416A1 (ja) 2007-03-09 2008-03-03 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

Country Status (3)

Country Link
US (1) US8207734B2 (ja)
JP (1) JP5048052B2 (ja)
WO (1) WO2008111416A1 (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010264047A (ja) * 2009-05-14 2010-11-25 Hitachi Medical Corp 磁気共鳴イメージング装置
JP2014046110A (ja) * 2012-09-03 2014-03-17 Toshiba Corp 磁気共鳴イメージング装置
JP2014076359A (ja) * 2012-10-10 2014-05-01 Siemens Aktiengesellschaft 磁気共鳴装置による撮像方法および磁気共鳴装置
JP2015080513A (ja) * 2013-10-21 2015-04-27 株式会社東芝 磁気共鳴イメージング装置及び画像処理装置
JP2015128585A (ja) * 2014-01-02 2015-07-16 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 磁気共鳴生データの再構成方法および装置
WO2016017385A1 (ja) * 2014-07-29 2016-02-04 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画像再構成方法
CN109143132A (zh) * 2018-09-12 2019-01-04 上海联影医疗科技有限公司 磁共振信号采集方法、成像方法、系统和介质
US11927658B2 (en) 2021-08-03 2024-03-12 Fujifilm Healthcare Corporation Magnetic resonance imaging apparatus and control method thereof
JP7451366B2 (ja) 2020-09-18 2024-03-18 キヤノンメディカルシステムズ株式会社 画像生成装置、画像生成方法、および画像生成プログラム

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US7394253B2 (en) * 2004-11-16 2008-07-01 Kabushiki Kaisha Toshiba Radio frequency coil assembly and magnetic resonance imaging apparatus
DE102005049229B3 (de) * 2005-10-14 2007-05-03 Siemens Ag Verfahren zur Ermittlung von Flipwinkelverteilungen in einer Magnetresonanzanlage, Magnetresonanzanlage und Computerprogrammprodukt
US8482280B2 (en) * 2009-01-23 2013-07-09 Dignity Health System and method for propeller magnetic resonance imaging with non-parallel bladelets
US8108147B1 (en) * 2009-02-06 2012-01-31 The United States Of America As Represented By The Secretary Of The Navy Apparatus and method for automatic omni-directional visual motion-based collision avoidance
US8405394B2 (en) * 2009-10-20 2013-03-26 Allegheny-Singer Research Institute Targeted acquisition using holistic ordering (TACHO) approach for high signal to noise imaging
WO2012160970A1 (ja) * 2011-05-20 2012-11-29 株式会社 日立メディコ 磁気共鳴イメージング装置、及びエコー信号計測方法
JP5984258B2 (ja) * 2012-04-27 2016-09-06 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及び画像処理装置
DE102014203068B4 (de) 2014-02-20 2015-11-26 Siemens Aktiengesellschaft Pseudo-zufällige Erfassung von MR-Daten eines zweidimensionalen Volumenabschnitts
DE102014223149B4 (de) 2014-11-13 2016-08-04 Siemens Healthcare Gmbh Beschleunigtes Gridding von aufgenommenen Datenpunkten auf ein kartesisches Gitter
US11143730B2 (en) 2019-04-05 2021-10-12 University Of Cincinnati System and method for parallel magnetic resonance imaging
US11893662B2 (en) * 2020-08-04 2024-02-06 Northwestern University Density compensation function in filtered backprojection
JP2022092150A (ja) * 2020-12-10 2022-06-22 キヤノンメディカルシステムズ株式会社 画像生成装置、画像生成方法、および画像生成プログラム
JP2022092161A (ja) * 2020-12-10 2022-06-22 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、および画像生成方法

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010264047A (ja) * 2009-05-14 2010-11-25 Hitachi Medical Corp 磁気共鳴イメージング装置
JP2014046110A (ja) * 2012-09-03 2014-03-17 Toshiba Corp 磁気共鳴イメージング装置
JP2014076359A (ja) * 2012-10-10 2014-05-01 Siemens Aktiengesellschaft 磁気共鳴装置による撮像方法および磁気共鳴装置
JP2015080513A (ja) * 2013-10-21 2015-04-27 株式会社東芝 磁気共鳴イメージング装置及び画像処理装置
JP2015128585A (ja) * 2014-01-02 2015-07-16 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 磁気共鳴生データの再構成方法および装置
WO2016017385A1 (ja) * 2014-07-29 2016-02-04 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画像再構成方法
CN109143132A (zh) * 2018-09-12 2019-01-04 上海联影医疗科技有限公司 磁共振信号采集方法、成像方法、系统和介质
CN109143132B (zh) * 2018-09-12 2020-11-27 上海联影医疗科技股份有限公司 磁共振信号采集方法、成像方法、系统和介质
JP7451366B2 (ja) 2020-09-18 2024-03-18 キヤノンメディカルシステムズ株式会社 画像生成装置、画像生成方法、および画像生成プログラム
US11927658B2 (en) 2021-08-03 2024-03-12 Fujifilm Healthcare Corporation Magnetic resonance imaging apparatus and control method thereof
JP7461913B2 (ja) 2021-08-03 2024-04-04 富士フイルムヘルスケア株式会社 磁気共鳴イメージング装置およびその制御方法

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Publication number Publication date
US8207734B2 (en) 2012-06-26
JPWO2008111416A1 (ja) 2010-06-24
JP5048052B2 (ja) 2012-10-17
US20100039110A1 (en) 2010-02-18

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