BR112014028136A2 - disposição de circuito de alimentação, sistema transmissor paralelo, e, método de comutação dos elementos de bobina de um sistema transmissor paralelo - Google Patents

disposição de circuito de alimentação, sistema transmissor paralelo, e, método de comutação dos elementos de bobina de um sistema transmissor paralelo

Info

Publication number
BR112014028136A2
BR112014028136A2 BR112014028136A BR112014028136A BR112014028136A2 BR 112014028136 A2 BR112014028136 A2 BR 112014028136A2 BR 112014028136 A BR112014028136 A BR 112014028136A BR 112014028136 A BR112014028136 A BR 112014028136A BR 112014028136 A2 BR112014028136 A2 BR 112014028136A2
Authority
BR
Brazil
Prior art keywords
line
transmitter system
supply
switching
coil
Prior art date
Application number
BR112014028136A
Other languages
English (en)
Inventor
Leussler Christoph
Lips Oliver
Original Assignee
Koninklijke Philips 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 Koninklijke Philips Nv filed Critical Koninklijke Philips Nv
Publication of BR112014028136A2 publication Critical patent/BR112014028136A2/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
    • G01R33/28—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
    • 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
    • G01R33/28—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
    • 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
    • G01R33/3642—Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
    • G01R33/3657—Decoupling of multiple RF coils wherein the multiple RF coils do not have the same function in MR, e.g. decoupling of a transmission coil from a receive coil
    • 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
    • G01R33/3664—Switching for purposes other than coil coupling or decoupling, e.g. switching between a phased array mode and a quadrature mode, switching between surface coil modes of different geometrical shapes, switching from a whole body reception coil to a local reception coil or switching for automatic coil selection in moving table MR or for changing the field-of-view
    • 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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/387—Compensation of inhomogeneities
    • 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
    • G01R33/543—Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription
    • 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)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

resumo disposição de circuito de alimentação, sistema transmissor paralelo, e, método de comutação dos elementos de bobina de um sistema transmissor paralelo a presente invenção refere-se a uma disposição de circuito de alimentação (18) para fornecer um sinal de rádio frequência a uma série de elementos de bobina (14) de um sistema de bobina de ressonância magnética (12), em que a disposição de circuito (18) compreende: - uma linha principal (20) para conexão de uma fonte de sinal de rádio frequência (16); - uma série de linhas de alimentação (22), em que cada linha de alimentação (22) destina-se a conectar um elemento de bobina (14) correspondente do sistema de bobinas (14); e - um divisor de energia (24) disposto entre a linha principal (20) e a série de linhas de alimentação (22) para distribuir o sinal sobre a linha principal (20) para cada uma das linhas de alimentação (22); em que pelo menos uma das linhas de alimentação (22) compreende um circuito de comutação controlável (26) com um elemento de comutação (28) para conexão/desconexão de duas seções de linha resultantes (30, 32) da linha de alimentação (22), uma primeira seção de linha (30) sobre o lado divisor e uma segunda seção de linha (32) sobre o lado conectável ao elemento de bobina (14); e em que o circuito de comutação (26) também compreende pelo menos um elemento de término conectável (44) para término de linha da primeira seção de linha (30) ou a linha principal (20) compreende um dispositivo circulador (60) interconectado com um meio de término (62). a presente invenção também se refere a um sistema transceptor paralelo (10) correspondente. 1/1
BR112014028136A 2012-05-14 2013-05-03 disposição de circuito de alimentação, sistema transmissor paralelo, e, método de comutação dos elementos de bobina de um sistema transmissor paralelo BR112014028136A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261646392P 2012-05-14 2012-05-14
PCT/IB2013/053511 WO2013171611A1 (en) 2012-05-14 2013-05-03 Feeding circuit arrangement for supplying a radio frequency signal to a plurality of coil elements of a magnetic resonance coil system

Publications (1)

Publication Number Publication Date
BR112014028136A2 true BR112014028136A2 (pt) 2017-06-27

Family

ID=48700648

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014028136A BR112014028136A2 (pt) 2012-05-14 2013-05-03 disposição de circuito de alimentação, sistema transmissor paralelo, e, método de comutação dos elementos de bobina de um sistema transmissor paralelo

Country Status (7)

Country Link
US (1) US9989600B2 (pt)
EP (1) EP2850446B1 (pt)
JP (1) JP6220384B2 (pt)
CN (1) CN104303069B (pt)
BR (1) BR112014028136A2 (pt)
RU (1) RU2620861C2 (pt)
WO (1) WO2013171611A1 (pt)

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US10564238B2 (en) 2014-12-17 2020-02-18 General Electric Company Systems and methods for energizing magnets of magnetic resonance imaging (MRI) systems
WO2017174552A1 (en) 2016-04-04 2017-10-12 Koninklijke Philips N.V. Rf transmit system with selectable drive ports for magnetic resonance imaging apparatuses
EP3470864A1 (en) 2017-10-12 2019-04-17 Koninklijke Philips N.V. Feeding a coil for magnetic resonance imaging
CN110133551B (zh) * 2019-05-14 2021-12-21 上海联影医疗科技股份有限公司 射频发射装置及磁共振成像系统
US11133957B2 (en) * 2019-05-29 2021-09-28 Trane International Inc. HVAC controller area network hybrid network topology

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US5132621A (en) * 1990-04-24 1992-07-21 General Electric Company Radio frequency field coil and power splitter for nmr
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US7598739B2 (en) * 1999-05-21 2009-10-06 Regents Of The University Of Minnesota Radio frequency gradient, shim and parallel imaging coil
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Also Published As

Publication number Publication date
CN104303069A (zh) 2015-01-21
EP2850446B1 (en) 2023-07-12
RU2620861C2 (ru) 2017-05-30
US9989600B2 (en) 2018-06-05
CN104303069B (zh) 2017-08-15
RU2014150515A (ru) 2016-07-10
JP2015516255A (ja) 2015-06-11
EP2850446A1 (en) 2015-03-25
US20150177342A1 (en) 2015-06-25
WO2013171611A1 (en) 2013-11-21
JP6220384B2 (ja) 2017-10-25

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements