EP3169230A4 - Artificially structured unit cells providing localized b1 magnetic fields for mri and nmr devices - Google Patents

Artificially structured unit cells providing localized b1 magnetic fields for mri and nmr devices Download PDF

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Publication number
EP3169230A4
EP3169230A4 EP15821987.3A EP15821987A EP3169230A4 EP 3169230 A4 EP3169230 A4 EP 3169230A4 EP 15821987 A EP15821987 A EP 15821987A EP 3169230 A4 EP3169230 A4 EP 3169230A4
Authority
EP
European Patent Office
Prior art keywords
mri
magnetic fields
unit cells
cells providing
providing localized
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP15821987.3A
Other languages
German (de)
French (fr)
Other versions
EP3169230A1 (en
Inventor
David R. Smith
Tom Driscoll
Yaroslav A. Urzhumov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elwha LLC
Original Assignee
Elwha LLC
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
Priority claimed from US14/334,450 external-priority patent/US9880240B2/en
Priority claimed from US14/334,368 external-priority patent/US9927503B2/en
Priority claimed from US14/334,424 external-priority patent/US9897669B2/en
Priority claimed from US14/334,398 external-priority patent/US9927505B2/en
Application filed by Elwha LLC filed Critical Elwha LLC
Publication of EP3169230A1 publication Critical patent/EP3169230A1/en
Publication of EP3169230A4 publication Critical patent/EP3169230A4/en
Withdrawn legal-status Critical Current

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
    • 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
    • G01R33/288—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
    • G01R33/345—Constructional details, e.g. resonators, specially adapted to MR of waveguide type

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
EP15821987.3A 2014-07-17 2015-07-16 Artificially structured unit cells providing localized b1 magnetic fields for mri and nmr devices Withdrawn EP3169230A4 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US14/334,450 US9880240B2 (en) 2014-07-17 2014-07-17 Cancellation of an electric field component of a magnetic field generated by artificially structured electromagnetic unit cells
US14/334,368 US9927503B2 (en) 2014-07-17 2014-07-17 Artificially structured B1 magnetic field generator for MRI and NMR devices
US14/334,424 US9897669B2 (en) 2014-07-17 2014-07-17 Electronically controllable groups of artificially structured unit cells providing localized B1 magnetic fields for MRI and NMR devices
US14/334,398 US9927505B2 (en) 2014-07-17 2014-07-17 Artificially structured unit cells providing localized B1 magnetic fields for MRI and NMR devices
PCT/US2015/040702 WO2016011227A1 (en) 2014-07-17 2015-07-16 Artificially structured unit cells providing localized b1 magnetic fields for mri and nmr devices

Publications (2)

Publication Number Publication Date
EP3169230A1 EP3169230A1 (en) 2017-05-24
EP3169230A4 true EP3169230A4 (en) 2018-04-04

Family

ID=55079044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15821987.3A Withdrawn EP3169230A4 (en) 2014-07-17 2015-07-16 Artificially structured unit cells providing localized b1 magnetic fields for mri and nmr devices

Country Status (3)

Country Link
EP (1) EP3169230A4 (en)
CN (1) CN106659422A (en)
WO (1) WO2016011227A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107213556B (en) * 2017-04-24 2020-02-18 中国科学院合肥物质科学研究院 Proton treatment and detection frame integrated mechanism based on MRI
KR102569416B1 (en) * 2017-06-07 2023-08-22 트르스티스 오브 보스톤 유니버시티 Apparatus for improving magnetic resonance imaging
US10542906B2 (en) * 2018-04-25 2020-01-28 Spectrohm, Inc. Tomographic systems and methods for determining characteristics of inhomogenous specimens using guided electromagnetic fields
KR20220074961A (en) 2019-10-08 2022-06-03 트르스티스 오브 보스톤 유니버시티 Nonlinear and smart metamaterials useful for changing resonant frequencies

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013210381B3 (en) * 2013-06-05 2014-05-28 Siemens Aktiengesellschaft Local coil e.g. head coil, of magnetic resonance system, has adapter device provided for coupling of signals or decoupling of signals from meta-material signal conductor with high-pass or band-pass characteristic

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1859292A1 (en) * 2005-03-10 2007-11-28 Koninklijke Philips Electronics N.V. Ultra-short mri body coil
JP2007282860A (en) * 2006-04-17 2007-11-01 Univ Of Tsukuba Magnetic resonance imaging device and method
JP5274864B2 (en) * 2007-04-06 2013-08-28 株式会社東芝 Magnetic resonance imaging apparatus, RF coil system, and magnetic resonance imaging method
CN101452065B (en) * 2007-12-04 2011-10-19 西门子（中国）有限公司 Partial coil in magnetic resonance equipment, the magnetic resonance equipment and imaging method
US7753165B2 (en) * 2007-12-21 2010-07-13 Robert Bosch Gmbh Device and method for active noise cancellation in exhaust gas channel of a combustion engine
US20110118587A1 (en) * 2008-03-04 2011-05-19 Roemer Peter B Optimization of rf transmit and gradient magnetic field imaging using radio frequency and gradient coils
US8198891B2 (en) * 2009-06-15 2012-06-12 General Electric Company System, method, and apparatus for magnetic resonance RF-field measurement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013210381B3 (en) * 2013-06-05 2014-05-28 Siemens Aktiengesellschaft Local coil e.g. head coil, of magnetic resonance system, has adapter device provided for coupling of signals or decoupling of signals from meta-material signal conductor with high-pass or band-pass characteristic

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
FREIRE M J ET AL: "On the applications of mu_r=-1 metamaterial lenses for magnetic resonance imaging", JOURNAL OF MAGNETIC RESONANCE, ACADEMIC PRESS, ORLANDO, FL, US, vol. 203, no. 1, 29 December 2009 (2009-12-29), pages 81 - 90, XP026894347, ISSN: 1090-7807, [retrieved on 20100207], DOI: 10.1016/J.JMR.2009.12.005 *
IRENA ZIVKOVIC ET AL.: "Metamaterial cell for B1+ field manipulation at 9.4T MRI", PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE, ISMRM, JOINT ANNUAL MEETING ISMRM-ESMRMB, MILAN, ITALY, 10-16 MAY 2014, no. 4834, 25 April 2014 (2014-04-25), XP040671607 *
See also references of WO2016011227A1 *
XIAOLIANG ZHANG ET AL.: "SNR Enhancement by Free Local Resonators for Traveling Wave MRI", PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE, ISMRM, JOINT ANNUAL MEETING ISMRM-ESMRMB, MILAN, ITALY, 10-16 MAY 2014, no. 1357, 25 April 2014 (2014-04-25), XP040662426 *

Also Published As

Publication number Publication date
EP3169230A1 (en) 2017-05-24
WO2016011227A1 (en) 2016-01-21
CN106659422A (en) 2017-05-10

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