JP5419476B2 - 磁気共鳴装置、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用の制御方法、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用のコンピュータプログラム - Google Patents

磁気共鳴装置、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用の制御方法、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用のコンピュータプログラム Download PDF

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JP5419476B2
JP5419476B2 JP2009005952A JP2009005952A JP5419476B2 JP 5419476 B2 JP5419476 B2 JP 5419476B2 JP 2009005952 A JP2009005952 A JP 2009005952A JP 2009005952 A JP2009005952 A JP 2009005952A JP 5419476 B2 JP5419476 B2 JP 5419476B2
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pulse
magnetic resonance
excitation
resonance apparatus
uniformity
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JP2009165834A5 (enExample
JP2009165834A (ja
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ディール ディルク
ニストラー ユルゲン
レンツ ヴォルフガング
フェスター マルクス
ヴォルフ ゼバスティアン
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Siemens AG
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Siemens AG
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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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
    • 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
    • G01R33/5612—Parallel RF transmission, i.e. RF pulse transmission using a plurality of independent transmission channels
    • 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
    • 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/288—Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room

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  • Physics & Mathematics (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)
  • High Energy & Nuclear Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP2009005952A 2008-01-14 2009-01-14 磁気共鳴装置、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用の制御方法、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用のコンピュータプログラム Expired - Fee Related JP5419476B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008004256.0 2008-01-14
DE102008004256A DE102008004256B4 (de) 2008-01-14 2008-01-14 SAR-optimierte Ansteuerung eines Spulenarrays

Publications (3)

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JP2009165834A JP2009165834A (ja) 2009-07-30
JP2009165834A5 JP2009165834A5 (enExample) 2012-01-12
JP5419476B2 true JP5419476B2 (ja) 2014-02-19

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JP2009005952A Expired - Fee Related JP5419476B2 (ja) 2008-01-14 2009-01-14 磁気共鳴装置、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用の制御方法、及び、当該磁気共鳴装置の送信アレイのコイル及びグラジエントマグネットシステム用のコンピュータプログラム

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US (1) US7847550B2 (enExample)
JP (1) JP5419476B2 (enExample)
CN (1) CN101487881B (enExample)
DE (1) DE102008004256B4 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057582B4 (de) * 2009-12-09 2012-07-26 Siemens Aktiengesellschaft Verfahren zum Aufbau von zumindest einem Teilbereich einer Pulssequenz einer Magnetresonanzvorrichtung und entsprechende Pulssequenz
CN101852843B (zh) * 2010-05-27 2014-07-30 南京丰盛超导技术有限公司 一种超导磁体外磁屏蔽线圈的优化设计方法
DE102012212402B3 (de) * 2012-03-20 2013-10-17 Siemens Aktiengesellschaft Ermittlung einer MR-Sequenz unter Berücksichtigung der Energieverteilungsfunktion im k-Raum
DE102014209783B4 (de) * 2014-05-22 2018-06-14 Siemens Healthcare Gmbh Erstellung eines MR-Bildes mit Hilfe einer Kombination aus einer Ganzkörperspule und einer lokalen Sendespule
CN106353705B (zh) * 2016-09-23 2019-02-05 沈阳东软医疗系统有限公司 一种梯度信号输出的方法及装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647858A (en) * 1985-07-29 1987-03-03 General Electric Company Methods for overcoming transient magnetic field inhomogeneity in nuclear magnetic resonance imaging
JPH03224538A (ja) * 1990-01-31 1991-10-03 Hitachi Medical Corp 一次の静磁場不均一を補正して計測する過程を備えたｍｒｉ装置
US5914599A (en) * 1995-08-18 1999-06-22 National Research Council Of Canada Compensation for inhomogeneity of the field generated by the RF coil in a nuclear magnetic resonance system
BR9810032A (pt) * 1998-04-17 2000-09-19 Koninkl Philips Electronics Nv Processo e aparelho de ressonância magnética para obter imagens por intermédio de ressonância magnética
US6177795B1 (en) * 1998-05-19 2001-01-23 Elscint Ltd. Spectral component imaging using phased array coils
US6819108B2 (en) * 2003-03-21 2004-11-16 General Electric Company Method of magnetic field controlled shimming
US20080284435A1 (en) * 2003-11-25 2008-11-20 Koninklijke Philips Electronics Nv Magnetic Resonance Coil Element With Embedded Electronics Module
US6989673B2 (en) 2003-11-26 2006-01-24 General Electric Company Method and apparatus to reduce RF power deposition during MR data acquisition
US7078900B2 (en) * 2004-07-23 2006-07-18 General Electric Company Method and system of determining parameters for MR data acquisition with real-time B1 optimization
US7479783B2 (en) * 2006-11-15 2009-01-20 Beth Israel Deaconess Medical Center, Inc. Echo train preparation for fast spin-echo acquisition
US7737690B2 (en) * 2007-05-18 2010-06-15 General Electric Company System and method for amplitude reduction in RF pulse design
JP5184049B2 (ja) * 2007-10-30 2013-04-17 株式会社日立製作所 磁気共鳴検査装置及び高周波パルス波形算出方法

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Publication number Publication date
CN101487881A (zh) 2009-07-22
DE102008004256A1 (de) 2009-07-23
US7847550B2 (en) 2010-12-07
DE102008004256B4 (de) 2010-01-07
JP2009165834A (ja) 2009-07-30
CN101487881B (zh) 2013-01-09
US20090179645A1 (en) 2009-07-16

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