ATE118100T1 - Nmr qd rf-spule mit einem von dioden eingeschalteten verstimmungskreis, zur reduktion von störungen. - Google Patents

Nmr qd rf-spule mit einem von dioden eingeschalteten verstimmungskreis, zur reduktion von störungen.

Info

Publication number
ATE118100T1
ATE118100T1 AT88113555T AT88113555T ATE118100T1 AT E118100 T1 ATE118100 T1 AT E118100T1 AT 88113555 T AT88113555 T AT 88113555T AT 88113555 T AT88113555 T AT 88113555T AT E118100 T1 ATE118100 T1 AT E118100T1
Authority
AT
Austria
Prior art keywords
coil
current flowing
nmr
transmission line
control signal
Prior art date
Application number
AT88113555T
Other languages
English (en)
Inventor
Mitsuaki Arakawa
Barry M Mccarten
Original Assignee
Univ California
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 California filed Critical Univ California
Application granted granted Critical
Publication of ATE118100T1 publication Critical patent/ATE118100T1/de

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
    • G01R33/3657—Decoupling of multiple RF coils wherein the multiple RF coils do not have the same function in MR, e.g. decoupling of a transmission coil from a receive coil
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Noise Elimination (AREA)
AT88113555T 1987-09-01 1988-08-20 Nmr qd rf-spule mit einem von dioden eingeschalteten verstimmungskreis, zur reduktion von störungen. ATE118100T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/091,916 US4782298A (en) 1987-09-01 1987-09-01 MRI QD RF coil having diode switched detuning circuit producing reduced artifact

Publications (1)

Publication Number Publication Date
ATE118100T1 true ATE118100T1 (de) 1995-02-15

Family

ID=22230289

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88113555T ATE118100T1 (de) 1987-09-01 1988-08-20 Nmr qd rf-spule mit einem von dioden eingeschalteten verstimmungskreis, zur reduktion von störungen.

Country Status (5)

Country Link
US (1) US4782298A (de)
EP (1) EP0305830B1 (de)
JP (1) JP2554364B2 (de)
AT (1) ATE118100T1 (de)
DE (1) DE3852915T2 (de)

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US4812764A (en) * 1988-03-31 1989-03-14 Varian Associates, Inc. Calibrated decoupling of tightly coupled concentric surface coils
US4887039A (en) * 1988-12-22 1989-12-12 General Electric Company Method for providing multiple coaxial cable connections to a radio-frequency antenna without baluns
JPH02203839A (ja) * 1989-02-03 1990-08-13 Hitachi Ltd 核磁気共鳴を用いた検査装置
US5256972A (en) * 1990-01-30 1993-10-26 Elscint, Ltd. Body coil decoupling circuit
US5049821A (en) * 1990-02-15 1991-09-17 University Of Florida Continuously variable field of view surface coil for NMR imaging
US5216367A (en) * 1990-02-21 1993-06-01 Kabushiki Kaisha Toshiba MR imaging apparatus capable of automatically selecting multiple surface coils
US5172061A (en) * 1990-09-18 1992-12-15 The Regents Of The University Of California Q control for capacitively coupled MRI/MRSI RF coil
DE4030878A1 (de) * 1990-09-29 1992-04-02 Siemens Ag Doppel-oberflaechenspule fuer ein kernspinresonanzgeraet
DE4030877A1 (de) * 1990-09-29 1992-04-02 Siemens Ag Doppel-oberflaechenspule fuer ein kernspinresonanzgeraet
US5510714A (en) * 1991-08-09 1996-04-23 Hitachi, Ltd. Magnetic resonance imaging apparatus and RF coil employed therein
US5621323A (en) * 1991-11-29 1997-04-15 Magnetic Research, Inc. Surface coil elements
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
US5243287A (en) * 1992-04-27 1993-09-07 General Electric Company Dynamically detuned NMR field coil
US5461314A (en) * 1993-10-21 1995-10-24 The Regents Of The University Of California MRI front end apparatus and method of operation
US5483158A (en) * 1993-10-21 1996-01-09 The Regents Of The University Of California Method and apparatus for tuning MRI RF coils
JP3422560B2 (ja) * 1994-05-19 2003-06-30 ジーイー横河メディカルシステム株式会社 Ｍｒｉ用ｒｆコイル及びｍｒｉ装置
US5543713A (en) * 1994-12-01 1996-08-06 The Regents Of The University Of California Ground breaker for multiple control lines
US6967547B2 (en) * 2002-06-24 2005-11-22 Signal Technology Corporation RF switch including diodes with intrinsic regions
DE102004007632B4 (de) * 2003-05-24 2011-02-10 Nagy, Sándor Katalysatorlaserantrieb mit Hochfrequenzresonanzanlage
JP2005045346A (ja) * 2003-07-23 2005-02-17 Toshiba Tec Corp 平面アンテナ及びこれを用いた無線装置
US6989673B2 (en) * 2003-11-26 2006-01-24 General Electric Company Method and apparatus to reduce RF power deposition during MR data acquisition
DE10356274B4 (de) * 2003-11-28 2007-06-14 Siemens Ag Verstimmschaltungseinheit
WO2005086817A2 (en) * 2004-03-08 2005-09-22 New York University Active radio frequency coil for high field magnetic resonance imaging
JP4327119B2 (ja) * 2005-04-22 2009-09-09 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 切換装置、ｒｆコイル及び磁気共鳴撮像装置
EP2047732B1 (de) * 2006-07-25 2010-12-29 Koninklijke Philips Electronics N.V. Geformte kabelhalter
DE102007016312B4 (de) 2007-04-04 2010-06-17 Siemens Ag Birdcage-ähnliche Sendeantenne für Magnetresonanzanwendungen mit verschieden voneinander ausgebildeten Abschlusselementen
JP2009148552A (ja) * 2007-11-27 2009-07-09 Hoya Corp 無線観測装置及び内視鏡システム
US9864032B2 (en) * 2010-01-05 2018-01-09 National Health Research Institutes Magnetic resonance imaging system
RU2417746C1 (ru) * 2010-02-01 2011-05-10 Общество с ограниченной ответственностью "С.П.ГЕЛПИК" Приемно-передающее радиочастотное устройство к магнитно-резонансному сканеру для ортопедического магнитного томографа
EP2536332B1 (de) 2010-02-16 2020-08-12 Duke University Verfahren und vorrichtung zur in-vivo-magnetresonanzabbildung der lungen mithilfe perfluorinierter gasgemische
CN101819263A (zh) * 2010-03-23 2010-09-01 苏州工业园区朗润科技有限公司 用于核磁共振系统中射频发射线圈的失谐电路和方法
DE102012211147B4 (de) * 2012-06-28 2017-08-31 Siemens Healthcare Gmbh Automatische Verstimmung nicht angeschlossener Sende-Empfangsspulen für MRI
US10215818B2 (en) * 2013-04-23 2019-02-26 Koninklijke Philips N.V. Single coaxial interface for magnetic resonace (MR) coils
CN104166114B (zh) * 2013-05-28 2015-09-30 上海联影医疗科技有限公司 Fid和/或dc伪影校正方法及装置、mri采集与重建方法
US9827448B2 (en) * 2014-03-21 2017-11-28 Siemens Aktiengesellschaft Hybrid ultrasound and magnetic resonance imaging device
KR101909070B1 (ko) * 2016-09-29 2018-12-10 삼성전자주식회사 Rf 수신 코일 및 이를 포함하는 국부 코일 장치
US11156682B2 (en) * 2017-03-24 2021-10-26 Quality Electrodynamics, Llc Single layer magnetic resonance imaging transmit/receive radio frequency coil for different anatomies
WO2023049506A1 (en) * 2021-09-27 2023-03-30 Hyperfine Operations, Inc. Counter rotating current coil for magnetic resonance imaging
JP7691906B2 (ja) 2021-10-22 2025-06-12 キヤノンメディカルシステムズ株式会社 磁気共鳴イメージング装置
CA3252255A1 (en) 2022-02-16 2023-08-24 Inkspace Imaging, Inc. ANTENNA COUPLED TO A TRANSMISSION LINE AND DISCONTINUE CIRCUIT

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US4093911A (en) * 1977-02-22 1978-06-06 Varian Associates, Inc. Nuclear magnetic resonance spectrometer employing an improved resonance signal gating circuit
NL8401671A (nl) * 1984-05-25 1985-12-16 Philips Nv Kernspinresonantie apparaat met oppervlaktespoel detectie.
US4620155A (en) * 1984-08-16 1986-10-28 General Electric Company Nuclear magnetic resonance imaging antenna subsystem having a plurality of non-orthogonal surface coils
US4649348A (en) * 1984-08-20 1987-03-10 Technicare Corporation Radio frequency coils for nuclear magnetic resonance imaging systems
US4793356A (en) * 1985-08-14 1988-12-27 Picker International, Inc. Surface coil system for magnetic resonance imaging
US4717881A (en) * 1985-11-15 1988-01-05 Technicare Corporation Radio frequency coils for nuclear magnetic resonance imaging systems
US4682125A (en) * 1986-02-10 1987-07-21 The Regents Of The University Of California RF coil coupling for MRI with tuned RF rejection circuit using coax shield choke
DE3771630D1 (de) * 1986-09-22 1991-08-29 Siemens Ag Kernspin-resonanzgeraet zur ermittlung von spektren oder bildern eines untersuchungsobjektes.

Also Published As

Publication number Publication date
EP0305830A2 (de) 1989-03-08
JP2554364B2 (ja) 1996-11-13
EP0305830A3 (en) 1990-09-12
JPH01164357A (ja) 1989-06-28
DE3852915T2 (de) 1995-06-14
EP0305830B1 (de) 1995-02-01
US4782298A (en) 1988-11-01
DE3852915D1 (de) 1995-03-16

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