WO2007130588A3 - Radio frequency field localization for magnetic resonance - Google Patents
Radio frequency field localization for magnetic resonance Download PDFInfo
- Publication number
- WO2007130588A3 WO2007130588A3 PCT/US2007/010863 US2007010863W WO2007130588A3 WO 2007130588 A3 WO2007130588 A3 WO 2007130588A3 US 2007010863 W US2007010863 W US 2007010863W WO 2007130588 A3 WO2007130588 A3 WO 2007130588A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radio frequency
- localization
- coil
- uniformity
- field
- Prior art date
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Classifications
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- 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
- G01R33/24—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
- G01R33/288—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
- G01R33/34—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
- G01R33/34076—Birdcage 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
-
- 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
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/345—Constructional details, e.g. resonators, specially adapted to MR of waveguide type
- G01R33/3453—Transverse electromagnetic [TEM] 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
- G01R33/44—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
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/5659—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field
Abstract
Technology for controlling non-uniformity in the B1 field includes selecting the phase, magnitude, frequency, time, or spatial relationship among various elements of a multi-channel excitation coil in order to control the radio frequency (RF) power emanating from the coil antenna elements. Non-uniformity can be used to steer a constructively interfering B1 field node to spatially correlate with an anatomic region of interest. A convex (quadratically constrained quadratic problem) formulation of the B1 localization problem can be used to select parameters for exciting the coil. Localization can be used in simulated Finite Difference Time Domain B1 field human head distributions and human head phantom measurement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79771206P | 2006-05-04 | 2006-05-04 | |
US60/797,712 | 2006-05-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007130588A2 WO2007130588A2 (en) | 2007-11-15 |
WO2007130588A3 true WO2007130588A3 (en) | 2009-01-22 |
Family
ID=38668340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/010863 WO2007130588A2 (en) | 2006-05-04 | 2007-05-03 | Radio frequency field localization for magnetic resonance |
Country Status (2)
Country | Link |
---|---|
US (1) | US7633293B2 (en) |
WO (1) | WO2007130588A2 (en) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7615999B2 (en) * | 2005-04-29 | 2009-11-10 | Koninklijke Philips Electronics N.V. | Method and circuit arrangement for operating multi-channel transmit/receive antenna devices |
RU2411528C2 (en) * | 2005-06-24 | 2011-02-10 | Конинклейке Филипс Электроникс Н.В. | Magnetic resonance device and method |
EP1934622A1 (en) * | 2005-10-07 | 2008-06-25 | Koninklijke Philips Electronics N.V. | Multiple-channel transmit magnetic resonance |
EP2147325A1 (en) * | 2007-05-04 | 2010-01-27 | Koninklijke Philips Electronics N.V. | Method and rf transmitter arrangement for generating rf fields |
DE102007023251B4 (en) * | 2007-05-18 | 2017-11-23 | Siemens Healthcare Gmbh | Method for controlling a magnetic resonance system |
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DE102007059522B4 (en) * | 2007-12-11 | 2009-09-17 | Siemens Ag | Magnetic resonance system with loss-optimized operation |
US8169219B2 (en) * | 2008-03-05 | 2012-05-01 | University Of Utah Research Foundation | Slice selective MRI excitation with reduced power deposition using multiple transmit channels |
CN101981462B (en) * | 2008-03-27 | 2014-12-24 | 皇家飞利浦电子股份有限公司 | Flip angle imaging with improved B1 mapping for multi-RF transmit systems |
JP5558737B2 (en) * | 2008-06-26 | 2014-07-23 | 株式会社東芝 | Magnetic resonance imaging system |
KR20100011118A (en) * | 2008-07-24 | 2010-02-03 | 가천의과학대학교 산학협력단 | Radio frequency coil for magnetic resonance imaging apparatus |
EP2316148A1 (en) * | 2008-08-20 | 2011-05-04 | Koninklijke Philips Electronics N.V. | Rf power splitter for magnetic resonance system |
WO2010032172A1 (en) * | 2008-09-17 | 2010-03-25 | Koninklijke Philips Electronics N.V. | B1-mapping and b1l-shimming for mri |
US8299681B2 (en) | 2009-03-06 | 2012-10-30 | Life Services, LLC | Remotely adjustable reactive and resistive electrical elements and method |
JP2013505046A (en) * | 2009-09-17 | 2013-02-14 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Simultaneous optimization of RF power and RF field uniformity in MRI |
DE102009053293B4 (en) * | 2009-11-13 | 2012-08-02 | Siemens Aktiengesellschaft | Illustration of a particle in which magnetically active substances are integrated, with an imaging magnetic resonance measurement |
US8854042B2 (en) | 2010-08-05 | 2014-10-07 | Life Services, LLC | Method and coils for human whole-body imaging at 7 T |
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US8604791B2 (en) | 2010-09-09 | 2013-12-10 | Life Services, LLC | Active transmit elements for MRI coils and other antenna devices |
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US9588203B2 (en) * | 2010-12-07 | 2017-03-07 | New York University | Apparatus, method and computer-accessible medium for determination of electrical properties of tissues and materials using multiple radio frequency measurements |
US9097769B2 (en) | 2011-02-28 | 2015-08-04 | Life Services, LLC | Simultaneous TX-RX for MRI systems and other antenna devices |
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US9939501B2 (en) * | 2014-11-12 | 2018-04-10 | The Board Of Trustees Of The Leland Stanford Junior University | Iterative minimization procedure with uncompressed local SAR estimate |
US10539636B2 (en) * | 2015-04-24 | 2020-01-21 | Koninklijke Philips N.V. | Multi-channel transmit/receive radio frequency (RF) system which individually monitors currents in each of a plurality of antenna elements of a magnetic resonance (MR) imaging coil system |
US10288711B1 (en) | 2015-04-30 | 2019-05-14 | Life Services, LLC | Device and method for simultaneous TX/RX in strongly coupled MRI coil loops |
US10827948B1 (en) | 2015-11-25 | 2020-11-10 | Life Services, LLC | Method and apparatus for multi-part close fitting head coil |
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US10324146B2 (en) * | 2016-01-12 | 2019-06-18 | Life Services, LLC | Method and apparatus for multi-part body coil |
EP3408679A4 (en) | 2016-01-25 | 2019-09-11 | The Regents of The University of California | System and method for optimized diffusion--weighted imaging |
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CN112596026B (en) * | 2020-12-08 | 2024-01-19 | 江苏智海智能科技有限公司 | Elliptic target positioning method for unknown transmitter position |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7301341B2 (en) * | 2003-10-08 | 2007-11-27 | The Board Of Trustees Of The Leland Stanford Junior University | MRI gradient waveform design using convex optimization |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6087832A (en) * | 1997-05-06 | 2000-07-11 | Doty Scientific, Inc. | Edge-wound solenoids and strongly coupled ring resonators for NMR and MRI |
US6075365A (en) * | 1998-04-21 | 2000-06-13 | The Board Of Trustees Of The Leland Stanford Junior University | Minimum cost solenoid magnet and method of making same |
US6400310B1 (en) * | 1998-10-22 | 2002-06-04 | Washington University | Method and apparatus for a tunable high-resolution spectral estimator |
EP1230559A2 (en) | 1999-05-21 | 2002-08-14 | The General Hospital Corporation | Rf coil for imaging system |
DE10124465A1 (en) * | 2001-05-19 | 2002-11-21 | Philips Corp Intellectual Pty | Transmission and receiver coil for a magnetic resonance imaging instrument with an arrangement of independently adjustable resonator segments forming a body coil that allows complete control of the HF field distribution |
US6621433B1 (en) * | 2001-06-22 | 2003-09-16 | Fonar Corporation | Adaptive dynamic range receiver for MRI |
DE10134171A1 (en) * | 2001-07-13 | 2003-01-23 | Philips Corp Intellectual Pty | High-frequency coil arrangement for an MR device |
US6861840B2 (en) * | 2001-07-20 | 2005-03-01 | Mclean Hospital Corporation | Generation of synthetic nuclear magnetic resonance signals |
AU2004277703A1 (en) * | 2003-10-03 | 2005-04-14 | Regents Of The University Of Minnesota | Parallel transceiver for nuclear magnetic resonance system |
US7466131B1 (en) * | 2007-04-20 | 2008-12-16 | General Electric Company | System and method for designing multi-channel RF pulses for MR imaging |
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2007
- 2007-05-03 WO PCT/US2007/010863 patent/WO2007130588A2/en active Application Filing
- 2007-05-03 US US11/800,055 patent/US7633293B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7301341B2 (en) * | 2003-10-08 | 2007-11-27 | The Board Of Trustees Of The Leland Stanford Junior University | MRI gradient waveform design using convex optimization |
Also Published As
Publication number | Publication date |
---|---|
WO2007130588A2 (en) | 2007-11-15 |
US20080088305A1 (en) | 2008-04-17 |
US7633293B2 (en) | 2009-12-15 |
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