BR112013010485A2 - método e disposição para caracterização da corrente de transmissão de rf de um escâner de obtenção de imagem de ressonância magnética e produto de programa de computador - Google Patents

método e disposição para caracterização da corrente de transmissão de rf de um escâner de obtenção de imagem de ressonância magnética e produto de programa de computador

Info

Publication number
BR112013010485A2
BR112013010485A2 BR112013010485A BR112013010485A BR112013010485A2 BR 112013010485 A2 BR112013010485 A2 BR 112013010485A2 BR 112013010485 A BR112013010485 A BR 112013010485A BR 112013010485 A BR112013010485 A BR 112013010485A BR 112013010485 A2 BR112013010485 A2 BR 112013010485A2
Authority
BR
Brazil
Prior art keywords
characterizing
arrangement
computer program
program product
magnetic resonance
Prior art date
Application number
BR112013010485A
Other languages
English (en)
Other versions
BR112013010485A8 (pt
Inventor
Ingmar Graesslin
John Samuel Van Den Brink
Peter Vernickel
Sascha Krueger
Steffen Weiss
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BR112013010485A2 publication Critical patent/BR112013010485A2/pt
Publication of BR112013010485A8 publication Critical patent/BR112013010485A8/pt

Links

Classifications

    • 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
    • G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/246—Spatial mapping of the RF magnetic field B1
    • 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
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • 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]
    • 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
    • G01R33/58—Calibration of imaging systems, e.g. using test probes, Phantoms; Calibration objects or fiducial markers such as active or passive RF coils surrounding an MR active material
    • G01R33/583—Calibration of signal excitation or detection systems, e.g. for optimal RF excitation power or frequency

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
BR112013010485A 2010-11-02 2011-10-26 Método e disposição para caracterização da corrente de transmissão de rf de um escâner de obtenção de imagem de ressonância magnética e produto de programa de computador BR112013010485A8 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10189623 2010-11-02
US201161508742P 2011-07-18 2011-07-18
PCT/IB2011/054771 WO2012059845A1 (en) 2010-11-02 2011-10-26 Method of characterizing an rf transmit chain

Publications (2)

Publication Number Publication Date
BR112013010485A2 true BR112013010485A2 (pt) 2016-08-02
BR112013010485A8 BR112013010485A8 (pt) 2017-04-18

Family

ID=44999824

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112013010485A BR112013010485A8 (pt) 2010-11-02 2011-10-26 Método e disposição para caracterização da corrente de transmissão de rf de um escâner de obtenção de imagem de ressonância magnética e produto de programa de computador

Country Status (6)

Country Link
US (1) US9575146B2 (pt)
EP (1) EP2635914B1 (pt)
JP (1) JP5865913B2 (pt)
CN (1) CN103201644B (pt)
BR (1) BR112013010485A8 (pt)
WO (1) WO2012059845A1 (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2635914B1 (en) * 2010-11-02 2016-03-23 Koninklijke Philips N.V. Method of characterizing an rf transmit chain
US10656227B2 (en) 2015-05-12 2020-05-19 Koninklijke Philips N.V. Magnetic resonance examination system with field probes
EP3398510A1 (en) * 2017-05-04 2018-11-07 Koninklijke Philips N.V. System and method for dynamic focusing on the heart and/or lungs by frequency tuning and analysis of impedance phase and/or magnitude variations
EP3413070A1 (en) * 2017-06-09 2018-12-12 Koninklijke Philips N.V. Dual-echo dixon-type water/fat separation mr imaging
DE102017115807B3 (de) * 2017-07-13 2018-08-16 Krohne Ag Kernmagnetisches Messgerät
CN111092633B (zh) * 2019-12-20 2021-05-18 成都大学 一种提高收发分离反向散射通信激励距离的系统及方法

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US4284950A (en) 1978-08-05 1981-08-18 E M I Limited Imaging systems
US4623843A (en) 1984-08-01 1986-11-18 Albert Macovski NMR imaging system using excited reference coils
JPS6195237A (ja) 1984-10-16 1986-05-14 Mitsubishi Electric Corp 核磁気共鳴コンピユ−タ診断撮像装置
US5144235A (en) * 1990-08-10 1992-09-01 General Electric Company Method of decomposing nmr images by chemical species
US5225781A (en) * 1990-08-10 1993-07-06 General Electric Company Robust decomposition of NMR images by chemical species
US5233298A (en) * 1992-02-20 1993-08-03 General Electric Company Quantitative measurement of blood flow at multiple positions using comb excitation and fourier velocity encoding
US5321359A (en) * 1993-03-29 1994-06-14 General Electric Company Selective imaging among three or more chemical species
US5446384A (en) * 1993-12-27 1995-08-29 General Electric Company Simultaneous imaging of multiple spectroscopic components with magnetic resonance
GB9617976D0 (en) * 1996-08-28 1996-10-09 British Tech Group Method of and apparatus for nuclear quadrupole resonance testing a sample
US6507190B1 (en) 2000-08-01 2003-01-14 Ge Medical Systems Global Technologies Company Llc Method and apparatus for compensating polarizing fields in magnetic resonance imaging
US6483308B1 (en) * 2000-08-31 2002-11-19 Ge Medical Systems Global Technology Company, Llc Method and apparatus for processing MRI data acquired with a plurality of coils using dixon techniques
DE10122874B4 (de) * 2001-05-11 2004-09-23 Siemens Ag Verfahren zur Extraktion von Spinkollektiven mit unterschiedlicher chemischer Verschiebung aus phasenkodierten Einzelbildern unter Berücksichtigung von Feldinhomogenitäten sowie Vorrichtung dazu
DE10132274B4 (de) * 2001-07-04 2004-01-15 Siemens Ag Trennung von Fett- und Wasserbildern durch das Zwei-Punkt-Dixon-Verfahren unter Berücksichtigung einer integrierten 3D-Feld-Messung zur Aufnahme einer Karte der Grundfeldinhomogenität
WO2004053514A1 (en) * 2002-12-06 2004-06-24 Koninklijke Philips Electronics N.V. Magnetic resonance imaging system with a plurality of transmit coils
EP1582886B1 (en) 2004-04-02 2012-08-15 Universität Zürich Magnetic resonance apparatus with magnetic field detectors
CN101166989B (zh) * 2005-04-28 2012-08-08 皇家飞利浦电子股份有限公司 用于操作多通道发送/接收天线设备的方法和电路装置
WO2007002464A2 (en) * 2005-06-23 2007-01-04 The Research Foundation Of State University Of New York Simultaneous phase cycling for nuclear magnetic resonance spectroscopy
US7336074B2 (en) * 2006-05-05 2008-02-26 Quality Electrodynamics Active decoupling of MRI RF transmit coils
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DE102010012948B4 (de) * 2010-03-26 2012-04-26 Siemens Aktiengesellschaft Verfahren zum Ermitteln von Phasenkorrekturparametern und Magnetresonanzvorrichtung
EP2624751A4 (en) * 2010-10-07 2018-02-07 Duke University Multi-dimensional iterative phase-cycled reconstruction for mri images
EP2635914B1 (en) * 2010-11-02 2016-03-23 Koninklijke Philips N.V. Method of characterizing an rf transmit chain
US8248070B1 (en) * 2011-03-22 2012-08-21 Kabushiki Kaisha Toshiba MRI using prep scan sequence producing phase-offset NMR signals from different NMR species
US8975895B2 (en) * 2012-01-13 2015-03-10 The Board Of Trustees Of The University Of Illinois Method for correcting motion-induced phase errors in magnetic resonance imaging

Also Published As

Publication number Publication date
JP2013541396A (ja) 2013-11-14
EP2635914B1 (en) 2016-03-23
US9575146B2 (en) 2017-02-21
RU2013125454A (ru) 2014-12-10
WO2012059845A1 (en) 2012-05-10
EP2635914A1 (en) 2013-09-11
JP5865913B2 (ja) 2016-02-17
BR112013010485A8 (pt) 2017-04-18
US20130241553A1 (en) 2013-09-19
CN103201644B (zh) 2015-11-25
CN103201644A (zh) 2013-07-10

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Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: KONINKLIJKE PHILIPS N.V. (NL)

B25G Requested change of headquarter approved

Owner name: KONINKLIJKE PHILIPS N.V. (NL)

B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2485 DE 21-08-2018 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.