WO2006113545A3 - High-pass two-dimensional ladder network resonator - Google Patents

High-pass two-dimensional ladder network resonator Download PDF

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Publication number
WO2006113545A3
WO2006113545A3 PCT/US2006/014269 US2006014269W WO2006113545A3 WO 2006113545 A3 WO2006113545 A3 WO 2006113545A3 US 2006014269 W US2006014269 W US 2006014269W WO 2006113545 A3 WO2006113545 A3 WO 2006113545A3
Authority
WO
WIPO (PCT)
Prior art keywords
ladder network
resonator
pass
array
dimensional ladder
Prior art date
Application number
PCT/US2006/014269
Other languages
French (fr)
Other versions
WO2006113545A2 (en
Inventor
Douglas J Ballon
Henning U Voss
Original Assignee
Cornell Res Foundation Inc
Douglas J Ballon
Henning U Voss
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 Cornell Res Foundation Inc, Douglas J Ballon, Henning U Voss filed Critical Cornell Res Foundation Inc
Priority to CN200680012132XA priority Critical patent/CN101467069B/en
Priority to EP06750335.9A priority patent/EP1877835B1/en
Priority to JP2008506788A priority patent/JP2008538311A/en
Publication of WO2006113545A2 publication Critical patent/WO2006113545A2/en
Publication of WO2006113545A3 publication Critical patent/WO2006113545A3/en

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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
    • 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
    • G01R33/34—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
    • G01R33/32—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
    • 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
    • G01R33/3678—Electrical details, e.g. matching or coupling of the coil to the receiver involving quadrature drive or detection, e.g. a circularly polarized RF magnetic field
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/0672—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with resonating marks
    • 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
    • G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
    • 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
    • G01R33/34053—Solenoid coils; Toroidal coils

Abstract

A high-pass two-dimensional ladder network has been described for high-field MRI and credential applications. The next-to-highest eigenvalue of the network corresponds to a normal mode giving rise to B1 fields with good spatial homogeneity above the resonator plane. Other eigenvalues may also be used for specific imaging applications. In its most basic form, the ladder network is a collection of inductively coupled resonators where each element of the array is represented by at least one conducting strip having a self-inductance L, joined by a capacitor C at one or more points along each resonator. In the strong coupling limit of the inductively coupled high-pass two-dimensional ladder network resonator array, the array produces a high-frequency resonant mode that can be used to generate the traditional quadrature B1 field used in magnetic resonance imaging, and in the limit of weak or zero coupling reduces to a phased array suitable for parallel imaging applications.
PCT/US2006/014269 2005-04-15 2006-04-14 High-pass two-dimensional ladder network resonator WO2006113545A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200680012132XA CN101467069B (en) 2005-04-15 2006-04-14 High-pass two-dimensional ladder network resonator
EP06750335.9A EP1877835B1 (en) 2005-04-15 2006-04-14 High-pass two-dimensional ladder network resonator
JP2008506788A JP2008538311A (en) 2005-04-15 2006-04-14 High-pass two-dimensional ladder resonator

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US67159705P 2005-04-15 2005-04-15
US60/671,597 2005-04-15
US11/403,355 US7642781B2 (en) 2005-04-15 2006-04-13 High-pass two-dimensional ladder network resonator
US11/403,355 2006-04-13

Publications (2)

Publication Number Publication Date
WO2006113545A2 WO2006113545A2 (en) 2006-10-26
WO2006113545A3 true WO2006113545A3 (en) 2009-01-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/014269 WO2006113545A2 (en) 2005-04-15 2006-04-14 High-pass two-dimensional ladder network resonator

Country Status (5)

Country Link
US (1) US7642781B2 (en)
EP (1) EP1877835B1 (en)
JP (1) JP2008538311A (en)
CN (1) CN101467069B (en)
WO (1) WO2006113545A2 (en)

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Also Published As

Publication number Publication date
CN101467069B (en) 2012-06-20
US7642781B2 (en) 2010-01-05
JP2008538311A (en) 2008-10-23
WO2006113545A2 (en) 2006-10-26
EP1877835B1 (en) 2019-09-18
US20060244448A1 (en) 2006-11-02
EP1877835A2 (en) 2008-01-16
CN101467069A (en) 2009-06-24
EP1877835A4 (en) 2012-04-11

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