WO2003089947A8 - Radio frequency gradient and shim coil - Google Patents

Radio frequency gradient and shim coil

Info

Publication number
WO2003089947A8
WO2003089947A8 PCT/US2003/012393 US0312393W WO03089947A8 WO 2003089947 A8 WO2003089947 A8 WO 2003089947A8 US 0312393 W US0312393 W US 0312393W WO 03089947 A8 WO03089947 A8 WO 03089947A8
Authority
WO
WIPO (PCT)
Prior art keywords
current
radio frequency
shim coil
frequency gradient
gradient
Prior art date
Application number
PCT/US2003/012393
Other languages
French (fr)
Other versions
WO2003089947A1 (en
Inventor
Jr J Thomas Vaughan
Gregor Adriany
Kamil Ugurbil
Original Assignee
Univ Minnesota
Jr J Thomas Vaughan
Gregor Adriany
Kamil Ugurbil
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 Univ Minnesota, Jr J Thomas Vaughan, Gregor Adriany, Kamil Ugurbil filed Critical Univ Minnesota
Priority to EP03747048A priority Critical patent/EP1497668A1/en
Priority to KR10-2004-7016826A priority patent/KR20040103981A/en
Priority to CA2482801A priority patent/CA2482801C/en
Priority to JP2003586628A priority patent/JP2005523094A/en
Priority to AU2003262371A priority patent/AU2003262371A1/en
Publication of WO2003089947A1 publication Critical patent/WO2003089947A1/en
Publication of WO2003089947A8 publication Critical patent/WO2003089947A8/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • 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
    • G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
    • 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
    • G01R33/3628—Tuning/matching of the transmit/receive coil

Abstract

A plurality of linear current elements (130B) are configured about a specimen to be imaged. A current in each current element is controlled independent of a current in other current elements to select a gradient and to provide radio frequency shimming. Each current element is driven by a separate channel of a transmitter and connected to a separate channel of a multi-channel receiver. The impedance, and therefore, the current, in each current element is controlled mechanically or electrically.
PCT/US2003/012393 2002-04-19 2003-04-21 Radio frequency gradient and shim coil WO2003089947A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03747048A EP1497668A1 (en) 2002-04-19 2003-04-21 Radio frequency gradient and shim coil
KR10-2004-7016826A KR20040103981A (en) 2002-04-19 2003-04-21 Radio frequency gradient and shim coil
CA2482801A CA2482801C (en) 2002-04-19 2003-04-21 Radio frequency gradient and shim coil
JP2003586628A JP2005523094A (en) 2002-04-19 2003-04-21 Radio frequency gradient and shim coil
AU2003262371A AU2003262371A1 (en) 2002-04-19 2003-04-21 Radio frequency gradient and shim coil

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US37380802P 2002-04-19 2002-04-19
US60/373,808 2002-04-19
US37811102P 2002-05-14 2002-05-14
US60/378,111 2002-05-14

Publications (2)

Publication Number Publication Date
WO2003089947A1 WO2003089947A1 (en) 2003-10-30
WO2003089947A8 true WO2003089947A8 (en) 2004-05-06

Family

ID=29254535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/012393 WO2003089947A1 (en) 2002-04-19 2003-04-21 Radio frequency gradient and shim coil

Country Status (7)

Country Link
EP (1) EP1497668A1 (en)
JP (1) JP2005523094A (en)
KR (1) KR20040103981A (en)
CN (1) CN1646933A (en)
AU (1) AU2003262371A1 (en)
CA (1) CA2482801C (en)
WO (1) WO2003089947A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6969992B2 (en) * 2003-10-03 2005-11-29 Regents Of The University Of Minnesota Parallel transceiver for nuclear magnetic resonance system
EP1751571B1 (en) * 2004-05-07 2020-07-15 Regents Of The University Of Minnesota Multi-current elements for magnetic resonance radio frequency coils
WO2006042267A1 (en) 2004-10-07 2006-04-20 Invivo Corporation Method and apparatus for discrete shielding of volume rf coil arrays
WO2007042951A1 (en) * 2005-10-07 2007-04-19 Koninklijke Philips Electronics, N.V. Multiple-channel transmit magnetic resonance
JP5179019B2 (en) * 2006-04-04 2013-04-10 株式会社日立製作所 Coil device and nuclear magnetic resonance imaging apparatus using the same
US7525313B2 (en) * 2007-05-04 2009-04-28 General Electric Company System and method for multi-channel MR transmission
JP5549977B2 (en) * 2010-04-26 2014-07-16 株式会社 Ｊｅｏｌ Ｒｅｓｏｎａｎｃｅ NMR probe and NMR apparatus
KR101454663B1 (en) 2013-03-26 2014-10-27 삼성전자주식회사 Radio frequency resonators, radio frequency coil and magnetic resonance imaging apparatus
DE102013213400A1 (en) * 2013-06-21 2014-12-24 Siemens Aktiengesellschaft Transmitting unit for a magnetic resonance tomography system
KR101890261B1 (en) * 2016-12-01 2018-08-22 가천대학교 산학협력단 Magnetic resonance imaging birdcage coil assembly aligned along the z-axis
US11333731B2 (en) 2018-04-13 2022-05-17 Canon Medical Systems Corporation Magnetic resonance imaging apparatus, RF coil, and magnetic resonance imaging method
KR101995904B1 (en) * 2018-11-09 2019-07-04 한국기초과학지원연구원 Method for measuring spatial magnetic field distribution of magnet and apparatus for measuring spatial magnetic field distribution of magnet using it

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001428A (en) * 1989-08-21 1991-03-19 General Electric Company Method for mapping the RF transmit and receive field in an NMR system
JP3171881B2 (en) * 1991-07-31 2001-06-04 株式会社東芝 High frequency probe for magnetic resonance imaging apparatus and magnetic resonance imaging apparatus
US5594338A (en) * 1995-03-08 1997-01-14 Quantum Magnetics, Inc. Automatic tuning apparatus and method for substance detection using nuclear quadrupole resonance and nuclear magnetic resonance
US6633161B1 (en) * 1999-05-21 2003-10-14 The General Hospital Corporation RF coil for imaging system

Also Published As

Publication number Publication date
CN1646933A (en) 2005-07-27
CA2482801C (en) 2011-09-06
EP1497668A1 (en) 2005-01-19
CA2482801A1 (en) 2003-10-30
JP2005523094A (en) 2005-08-04
AU2003262371A1 (en) 2003-11-03
KR20040103981A (en) 2004-12-09
WO2003089947A1 (en) 2003-10-30

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