WO2007117604A3 - Inductive decoupling of an rf coil array - Google Patents

Inductive decoupling of an rf coil array Download PDF

Info

Publication number
WO2007117604A3
WO2007117604A3 PCT/US2007/008586 US2007008586W WO2007117604A3 WO 2007117604 A3 WO2007117604 A3 WO 2007117604A3 US 2007008586 W US2007008586 W US 2007008586W WO 2007117604 A3 WO2007117604 A3 WO 2007117604A3
Authority
WO
WIPO (PCT)
Prior art keywords
coil
coil array
preamplifier
inductive decoupling
transformer
Prior art date
Application number
PCT/US2007/008586
Other languages
French (fr)
Other versions
WO2007117604A2 (en
Inventor
George C Nascimento
Afonso C Silva
Original Assignee
Us Gov Health & Human Serv
George C Nascimento
Afonso C Silva
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 Us Gov Health & Human Serv, George C Nascimento, Afonso C Silva filed Critical Us Gov Health & Human Serv
Priority to EP07755003A priority Critical patent/EP2005218A4/en
Priority to US12/296,417 priority patent/US7932721B2/en
Publication of WO2007117604A2 publication Critical patent/WO2007117604A2/en
Publication of WO2007117604A3 publication Critical patent/WO2007117604A3/en

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
    • G01R33/36—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
    • G01R33/365—Decoupling of multiple RF coils wherein the multiple RF coils have the same function in MR, e.g. decoupling of a receive coil from another receive coil in a receive coil array, decoupling of a transmission coil from another transmission coil in a transmission coil array
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • H03F1/565—Modifications of input or output impedances, not otherwise provided for using inductive elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/191—Tuned amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/534—Transformer coupled at the input of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/537—A transformer being used as coupling element between two amplifying stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/541—Transformer coupled at the output of an amplifier

Abstract

An apparatus for imaging includes: a radio frequency (RF) coil array having a first RF coil and at least one additional RF coil, where the RF coil array is adapted to generate an image signal; a preamplifier having an input impedance, where the preamplifier is adapted to receive the image signal from the first RF coil; and a transformer to couple the first RF coil to the preamplifier, where impedance of the transformer is adapted to match the input impedance of the preamplifier.
PCT/US2007/008586 2006-04-07 2007-04-06 Inductive decoupling of an rf coil array WO2007117604A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07755003A EP2005218A4 (en) 2006-04-07 2007-04-06 Inductive decoupling of an rf coil array
US12/296,417 US7932721B2 (en) 2006-04-07 2007-04-06 Inductive decoupling of a RF coil array

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78993406P 2006-04-07 2006-04-07
US60/789,934 2006-04-07

Publications (2)

Publication Number Publication Date
WO2007117604A2 WO2007117604A2 (en) 2007-10-18
WO2007117604A3 true WO2007117604A3 (en) 2008-04-10

Family

ID=38581646

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/008586 WO2007117604A2 (en) 2006-04-07 2007-04-06 Inductive decoupling of an rf coil array

Country Status (3)

Country Link
US (1) US7932721B2 (en)
EP (1) EP2005218A4 (en)
WO (1) WO2007117604A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103026251A (en) * 2010-05-27 2013-04-03 皇家飞利浦电子股份有限公司 Decoupling of multiple channels of an MRI RF coil array

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021222A1 (en) * 2008-08-18 2010-02-25 株式会社 日立メディコ High-frequency coil and magnetic resonance imaging device
US8264224B2 (en) 2009-10-27 2012-09-11 University Of Seoul Industry Cooperation Foundation Detection of magnetic fields using nano-magnets
US9335390B2 (en) 2009-12-02 2016-05-10 Commonwealth Scientific And Industrial Research Organisation Apparatus for detecting signals
US8289022B2 (en) 2010-01-29 2012-10-16 University Of Seoul Industry Cooperation Foundation Magnetic resonance compatible magnetic field detection, based on diffuse reflectance of nano-magnet sets
US8928450B2 (en) * 2010-06-10 2015-01-06 General Electric Company Transformer assembly for a magnetic resonance imaging system
US8674799B2 (en) * 2010-06-10 2014-03-18 General Electric Company Transformer assembly for a magnetic resonance imaging system
EP2447732A1 (en) * 2010-10-26 2012-05-02 Koninklijke Philips Electronics N.V. RF antenna arrangement including a decoupling circuit especially for an MR imaging system
EP2751585A1 (en) * 2011-09-07 2014-07-09 Koninklijke Philips N.V. Dynamic modification of rf array coil/antenna impedance
US9885766B2 (en) 2012-04-17 2018-02-06 Transarray LLC Magnetic-resonance transceiver-phased array that compensates for reactive and resistive components of mutual impedance between array elements and circuit and method thereof
US20150355297A1 (en) 2013-01-11 2015-12-10 Ravi Menon System and method for decoupling magentic resonance imaging radio frequency coils with a modular magnetic wall
DE102013006305B4 (en) * 2013-03-19 2015-02-19 Krohne Ag Signal analyzer, in particular for nuclear magnetic flowmeters
JP6318236B2 (en) * 2013-04-23 2018-05-09 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Single coaxial interface for magnetic resonance (MR) coils
KR102505150B1 (en) * 2019-10-01 2023-02-28 램 리써치 코포레이션 Radio frequency distribution circuits including transformers and/or transformer coupled combiners
US11555875B2 (en) * 2021-03-24 2023-01-17 Coilone, LLC RF receive coil circuit for MRI systems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5329233A (en) * 1992-12-10 1994-07-12 General Electric Company Cylindrical local coil for nuclear magnetic resonance imaging
US5559434A (en) * 1991-08-09 1996-09-24 Hitachi, Ltd. Magnetic resonance imaging apparatus and RF coil employed therein
US6639406B1 (en) * 2002-05-08 2003-10-28 Ge Medical Systems Global Technology Company, Llc Method and apparatus for decoupling quadrature phased array coils
US20040189300A1 (en) * 2003-01-21 2004-09-30 Michael Burl Surface coil decoupling means for MRI systems

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093911A (en) * 1977-02-22 1978-06-06 Varian Associates, Inc. Nuclear magnetic resonance spectrometer employing an improved resonance signal gating circuit
US4095168A (en) * 1977-02-22 1978-06-13 Varian Associates, Inc. Rf pick-up coil circuit for a wide tuning range nuclear magnetic resonance probe
US4638253A (en) * 1984-10-29 1987-01-20 General Electric Company Mutual inductance NMR RF coil matching device
US4703272A (en) * 1986-08-29 1987-10-27 The Regents Of The University Of California Apparatus and method for decoupling MRI RF coil from selected body portions using passive components
EP0344293B1 (en) * 1987-12-07 1995-03-15 General Electric Company Nuclear magnetic resonance (nmr) imaging with multiple surface coils
JPH0471534A (en) 1990-07-13 1992-03-06 Toshiba Corp Magnetic resonance image device
FR2665265B1 (en) * 1990-07-25 1993-04-16 Magnetech Sa WIRELESS RECEPTION DEVICE FOR NUCLEAR MAGNETIC RESONANCE IMAGING APPARATUS.
US5278505A (en) * 1991-12-17 1994-01-11 The Regents Of The University Of California Self-cancelling RF receive coil used to decouple MRI transmit/receive RF coils
US5351007A (en) * 1992-06-01 1994-09-27 Conductus, Inc. Superconducting magnetic resonance probe coil
US5477188A (en) * 1994-07-14 1995-12-19 Eni Linear RF power amplifier
US5804969A (en) * 1995-07-28 1998-09-08 Advanced Mammography Systems, Inc. MRI RF coil
DE19928452A1 (en) * 1999-06-23 2000-12-28 Siemens Ag Reception antenna system for magnetic resonance signal
US6414488B1 (en) * 2000-03-01 2002-07-02 Koninklijke Philips Electronics N.V. Method and apparatus for decoupling magnetic resonance receive coils
US6504369B1 (en) * 2000-09-05 2003-01-07 Koninklijke Philips Electronics, N.V. Decoupling two or more channels on RF coil systems
JP4365525B2 (en) 2000-12-15 2009-11-18 株式会社マイクロテック・ニチオン Lighting lamp, disposable transparent resin cover and light emitting diode
DE10065420C2 (en) * 2000-12-27 2003-08-07 Siemens Ag Flow pump with high temperature superconductor and thus operated superconducting electromagnet
EP1339075A1 (en) * 2002-02-25 2003-08-27 Motorola, Inc. Magnetic nanomaterials and synthesis method
JP3655881B2 (en) * 2002-03-01 2005-06-02 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー RF coil and magnetic resonance imaging apparatus
US6822450B2 (en) * 2002-04-26 2004-11-23 Ge Medical Systems Global Technology Company, Llc Multiple channel, cardiac array for sensitivity encoding in magnetic resonance imaging
US6727703B2 (en) * 2002-05-17 2004-04-27 General Electric Company Method and apparatus for decoupling RF detector arrays for magnetic resonance imaging
DE10226511A1 (en) * 2002-06-14 2003-12-24 Philips Intellectual Property MR arrangement with high-frequency coil arrays
US6608480B1 (en) * 2002-09-30 2003-08-19 Ge Medical Systems Global Technology Company, Llc RF coil for homogeneous quadrature transmit and multiple channel receive
US6750652B2 (en) * 2002-10-22 2004-06-15 Ge Medical Systems Global Technology Company, Llc Integrated quadrature splitter-combiner and balun
DE10249239A1 (en) 2002-10-23 2004-05-06 Philips Intellectual Property & Standards Gmbh Magnetic resonance imaging device with additional electrical equipment
DE10325634B4 (en) * 2003-06-06 2018-03-29 Bruker Biospin Mri Gmbh Low-noise preamplifier, in particular for nuclear magnetic resonance (= NMR)
US7386338B2 (en) * 2004-04-30 2008-06-10 General Electric Company Bilateral imaging apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5559434A (en) * 1991-08-09 1996-09-24 Hitachi, Ltd. Magnetic resonance imaging apparatus and RF coil employed therein
US5329233A (en) * 1992-12-10 1994-07-12 General Electric Company Cylindrical local coil for nuclear magnetic resonance imaging
US6639406B1 (en) * 2002-05-08 2003-10-28 Ge Medical Systems Global Technology Company, Llc Method and apparatus for decoupling quadrature phased array coils
US20040189300A1 (en) * 2003-01-21 2004-09-30 Michael Burl Surface coil decoupling means for MRI systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103026251A (en) * 2010-05-27 2013-04-03 皇家飞利浦电子股份有限公司 Decoupling of multiple channels of an MRI RF coil array

Also Published As

Publication number Publication date
WO2007117604A2 (en) 2007-10-18
EP2005218A2 (en) 2008-12-24
US20090289630A1 (en) 2009-11-26
EP2005218A4 (en) 2012-03-07
US7932721B2 (en) 2011-04-26

Similar Documents

Publication Publication Date Title
WO2007117604A3 (en) Inductive decoupling of an rf coil array
WO2017058617A3 (en) Circuit topologies for combined generator
GB2492523A (en) Phased array millimeter wave imaging techniques
WO2009124071A3 (en) Methods and systems for determining the location of an electronic device
WO2004077606A3 (en) Earphone antenna, composite coil used therefor, coaxial cable, and radio device with the earphone antenna
WO2005020449A3 (en) Proximity detecting apparatus
EP1710925A3 (en) Multi-band high-frequency circuit
WO2008014415A3 (en) Human body as fm antenna
MX349564B (en) Antenna sensor, lamp including same, and method of retrofitting same.
WO2010097375A3 (en) Remote body rf coil arrays for high-performance magnetic resonance imaging and spectroscopy
GB201019369D0 (en) Mimo antenna calibration device,integrated circuit and method for compensating phase mismatch
WO2002098273A3 (en) Method and apparatus for electromagnetic navigation of a surgical probe near a metal object
WO2011029094A3 (en) Systems, methods, and computer readable media for high- frequency contrast imaging and image-guided therapeutics
WO2006130802A3 (en) Apparatus, method and system for performing phase-resolved optical frequency domain imaging
WO2010019449A3 (en) System and method for an intelligent radio frequency receiver
WO2009081119A3 (en) Method and apparatus for determining whether components of vehicles are coupled together and for information transmission between them
WO2008116991A3 (en) Optimum control of the resonant frequency of a resonator in a radio frequency ignition system
TW200614593A (en) Antenna for portable electronic device
TW200644454A (en) Method and apparatus for RF signal demodulation
EP2219023A3 (en) Wideband magnetic resonance imaging apparatus and method
EP2372930A3 (en) Active antenna array and method for calibration of the active antenna array
DE602007010623D1 (en) RFID READING DEVICE
EP2011430A4 (en) Antenna unit and receiving system
WO2012092236A3 (en) Headphone antenna for radio communications device
GB2441675B (en) Method and apparatus for sensing the envelope of high level multi frequency band rf signals

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07755003

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 12296417

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2007755003

Country of ref document: EP

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)