BR9709291A - Sistemas de antena e processo para operar um sistema de antena - Google Patents

Sistemas de antena e processo para operar um sistema de antena

Info

Publication number
BR9709291A
BR9709291A BR9709291A BR9709291A BR9709291A BR 9709291 A BR9709291 A BR 9709291A BR 9709291 A BR9709291 A BR 9709291A BR 9709291 A BR9709291 A BR 9709291A BR 9709291 A BR9709291 A BR 9709291A
Authority
BR
Brazil
Prior art keywords
antenna
operating
systems
antenna system
antenna systems
Prior art date
Application number
BR9709291A
Other languages
English (en)
Inventor
Samuel Roznitsky
Original Assignee
Samuel Roznitsky
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 Samuel Roznitsky filed Critical Samuel Roznitsky
Publication of BR9709291A publication Critical patent/BR9709291A/pt

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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
BR9709291A 1996-06-03 1997-05-29 Sistemas de antena e processo para operar um sistema de antena BR9709291A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US65676696A 1996-06-03 1996-06-03
US78259297A 1997-01-13 1997-01-13
PCT/US1997/009420 WO1997046895A1 (en) 1996-06-03 1997-05-29 Antenna system for nmr and mri apparatus

Publications (1)

Publication Number Publication Date
BR9709291A true BR9709291A (pt) 1999-08-10

Family

ID=27097262

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9709291A BR9709291A (pt) 1996-06-03 1997-05-29 Sistemas de antena e processo para operar um sistema de antena

Country Status (8)

Country Link
US (1) US5903150A (pt)
JP (1) JP2000514670A (pt)
CN (1) CN1135400C (pt)
AU (1) AU3151997A (pt)
BR (1) BR9709291A (pt)
GB (1) GB2331587B (pt)
IL (1) IL126959A0 (pt)
WO (1) WO1997046895A1 (pt)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5939883A (en) * 1996-07-17 1999-08-17 Fonar Corporation Magnetic resonance imaging excitation and reception methods and apparatus
AU5586000A (en) * 1999-02-22 2000-09-14 Paul Bryant Programmable active microwave ultrafine resonance spectrometer (pamurs) method and systems
US6414488B1 (en) * 2000-03-01 2002-07-02 Koninklijke Philips Electronics N.V. Method and apparatus for decoupling magnetic resonance receive coils
US20030169169A1 (en) * 2000-08-17 2003-09-11 Luc Wuidart Antenna generating an electromagnetic field for transponder
US6552544B2 (en) * 2001-04-05 2003-04-22 Varian, Inc. Detunable coil assembly and method of detuning RF coil for MRI
DE10126338A1 (de) * 2001-05-30 2002-12-12 Siemens Ag Hochfrequenz-Spulenanordnung für ein Kernspintomographie-Gerät und Kernspintomorgraphie-Gerät
WO2003087879A1 (en) * 2002-04-05 2003-10-23 University Of Rochester Cryogenically cooled phased array rf receiver coil for magnetic resonance imaging
GB0209756D0 (en) 2002-04-29 2002-06-05 Imp College Innovations Ltd Magnetic resonance imaging receive circuit
DE10244173B4 (de) * 2002-09-23 2005-11-03 Siemens Ag Antennenanordnung für ein Magnetresonanzgerät, Magnetresonanz-Antennensystem, Magnetresonanzgerät sowie Verfahren zur Verkopplung zweier Antennengruppen
DE10314215B4 (de) * 2003-03-28 2006-11-16 Siemens Ag Magnetresonanzantenne und Verfahren zur Verstimmung deren Eigenresonanzfrequenz
EP2240792B1 (en) * 2005-03-10 2013-08-21 The University Of Queensland Phased array coil for mri
DE102006029195A1 (de) * 2006-06-26 2008-01-03 Siemens Audiologische Technik Gmbh Sende-Empfangsschaltung mit PIN-Dioden
CN100495074C (zh) * 2006-10-08 2009-06-03 吉林大学 核磁共振与瞬变电磁联用仪及其方法
DE102006050069B4 (de) * 2006-10-24 2011-07-07 Siemens AG, 80333 Birdcage-Resonator mit Koppelringen zusätzlich zu den Endringen
CN101688906B (zh) * 2007-06-19 2013-07-17 皇家飞利浦电子股份有限公司 核磁共振成像射频接收器
DE102007047020B4 (de) * 2007-10-01 2012-07-12 Siemens Ag Anordnung zur Übertragung von Magnetresonanzsignalen
CN102414571B (zh) * 2009-04-02 2015-07-01 皇家飞利浦电子股份有限公司 用于多共振的磁共振系统中的设备和布线
US20110136444A1 (en) * 2009-12-09 2011-06-09 Mark Rhodes Transmit and receive antenna
US8542017B2 (en) * 2009-12-21 2013-09-24 Nxp B.V. System and method for measuring the shape of an organ of a patient using a magnetic induction radio sensor integrated in a stretchable strap
US8854042B2 (en) * 2010-08-05 2014-10-07 Life Services, LLC Method and coils for human whole-body imaging at 7 T
WO2012005620A1 (ru) * 2010-07-08 2012-01-12 Korotkov Konstantin Georgievich Устройство для измерения напряженности электромагнитного поля
WO2012088670A1 (zh) * 2010-12-29 2012-07-05 海能达通信股份有限公司 一种射频带通滤波电路
US8723518B2 (en) 2011-03-18 2014-05-13 Nicole SEIBERLICH Nuclear magnetic resonance (NMR) fingerprinting
US10627468B2 (en) * 2011-03-18 2020-04-21 Case Western Reserve University Nuclear magnetic resonance (NMR) fingerprinting
CN103257331B (zh) * 2012-02-16 2016-03-02 上海联影医疗科技有限公司 一种双频射频线圈
DE102012206066A1 (de) * 2012-04-13 2013-10-17 Siemens Aktiengesellschaft Erkennung ungesteckter Lokalspulen in einem Kernspintomographen
DE102012209754B4 (de) * 2012-06-12 2016-09-22 Siemens Healthcare Gmbh Spuleneinrichtung für einen Kernspintomographen
US9404954B2 (en) * 2012-10-19 2016-08-02 Witricity Corporation Foreign object detection in wireless energy transfer systems
US10094895B2 (en) * 2012-11-05 2018-10-09 Koninklijke Philips N.V. Transmit/receive switching circuitry with improved radio frequency isolation
DE102013003836A1 (de) * 2012-11-14 2014-05-15 Krohne Ag Messsystem für kernmagnetische Messgeräte
DE102013006305B4 (de) * 2013-03-19 2015-02-19 Krohne Ag Signalanalysator, insbesondere für kernmagnetische Durchflussmessgeräte
US9851420B2 (en) * 2013-08-09 2017-12-26 Schlumberger Technology Corporation Magnetic resonance transmitter
US10241063B2 (en) * 2015-04-15 2019-03-26 Jeol Ltd. Magnetic coupling high resolution nuclear magnetic resolution probe and method of use
DE102016214441B3 (de) 2016-08-04 2017-11-30 Bruker Biospin Gmbh Hochfrequenz-Interface-Schaltkreis, Hochfrequenzsystem und Magnetresonanzapparatur mit einem Hochfrequenz-Interface-Schaltkreis
US10852373B2 (en) * 2016-09-21 2020-12-01 Quality Electrodynamics, Llc Modulating magnetic resonance imaging transmit field in magnetic resonance fingerprinting using single layer transmit/receive radio frequency coil
US10386430B2 (en) * 2016-09-21 2019-08-20 Quality Electrodynamics, Llc Single layer magnetic resonance imaging transmit/receive radio frequency coil
US10347973B2 (en) * 2017-02-21 2019-07-09 Nxp B.V. Near-field electromagnetic induction (NFEMI) antenna
US10976388B2 (en) 2017-03-24 2021-04-13 Quality Electrodynamics, Llc Minimizing intravascular magnetic resonance imaging (MRI) guidewire heating with single layer MRI transmit/receive radio frequency coil
US11156682B2 (en) 2017-03-24 2021-10-26 Quality Electrodynamics, Llc Single layer magnetic resonance imaging transmit/receive radio frequency coil for different anatomies
US10649048B2 (en) 2017-04-28 2020-05-12 Quality Electrodynamics, Llc Single layer magnetic resonance imaging (MRI) transmit/receive (TX/RX) radio frequency (RF) coil with integrated shimming
US11193992B2 (en) 2017-05-05 2021-12-07 Quality Electrodynamics, Llc Single layer magnetic resonance imaging (MRI) transmit/receive (Tx/Rx) radio frequency (RF) coil with induced current failsafe protection
US10838028B2 (en) 2017-06-19 2020-11-17 Quality Electrodynamics, Llc Decoupling magnetic resonance imaging (MRI) radio frequency (RF) coil elements with high acceleration factor in parallel transmit (pTx) or receive (Rx) coils using fewer channels
DE102017115807B3 (de) * 2017-07-13 2018-08-16 Krohne Ag Kernmagnetisches Messgerät
US10871530B2 (en) * 2018-05-21 2020-12-22 Hyperfine Research, Inc. Radio-frequency coil signal chain for a low-field MRI system
GB2580011B (en) * 2018-08-03 2021-11-24 Medical Wireless Sensing Ltd Tunable metamaterial device
CN109444970B (zh) * 2019-01-11 2020-06-16 中国科学院成都生物研究所 一种利用视觉感知控制的探地电磁波谱收发方法
US11171684B1 (en) 2020-06-05 2021-11-09 Baker Hughes Oilfield Operations Llc Control of tranmsitting and receving antenna properties to reduce electromagnetic coupling

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901022A (en) * 1988-01-05 1990-02-13 Elscint, Ltd. Broadband matching and decoupling network
DE3816831A1 (de) * 1988-05-18 1989-11-30 Philips Patentverwaltung Kernspinuntersuchungsgeraet mit einer hochfrequenzspulenanordnung
JP2647139B2 (ja) * 1988-05-24 1997-08-27 株式会社東芝 磁気共鳴装置のプローブヘッド
US4975644A (en) * 1989-03-29 1990-12-04 Kabushiki Kaisha Toshiba Coil system for a magnetic resonance imaging system
US5050605A (en) * 1989-04-12 1991-09-24 Fonar Corporation Magnetic resonance imaging antennas with spiral coils and imaging methods employing the same
US5583438A (en) * 1989-04-12 1996-12-10 Fonar Corporation Inductively coupled dedicated RF coils for MRI
DE9012639U1 (de) * 1989-09-18 1990-10-31 Siemens AG, 8000 München Fehlersichere Entkopplung von Sende- und Empfangsantennen bei Kernspinresonanzgeräten
FI83819C (fi) * 1989-11-27 1991-08-26 Instrumentarium Oy Spol- och kopplingsarrangemang.
US5256972A (en) * 1990-01-30 1993-10-26 Elscint, Ltd. Body coil decoupling circuit
US5216367A (en) * 1990-02-21 1993-06-01 Kabushiki Kaisha Toshiba MR imaging apparatus capable of automatically selecting multiple surface coils
DE4030877A1 (de) * 1990-09-29 1992-04-02 Siemens Ag Doppel-oberflaechenspule fuer ein kernspinresonanzgeraet
US5206639A (en) * 1990-10-25 1993-04-27 Timex Corporation Single antenna dual frequency transponder
US5166617A (en) * 1991-01-11 1992-11-24 Varian Associates, Inc. High power NMR probe
US5321412A (en) * 1991-05-13 1994-06-14 Sensormatic Electronics Corporation Antenna arrangement with reduced coupling between transmit antenna and receive antenna
US5585721A (en) * 1991-06-24 1996-12-17 Fonar Corporation Inductively coupled dedicated RF coils for MRI
US5302901A (en) * 1991-08-26 1994-04-12 U.S. Philips Corporation Magnetic resonance apparatus comprising decoupled receiver coils
US5317266A (en) * 1991-11-22 1994-05-31 Siemens Aktiengesellschaft Local antenna with homogeneous sensitivity for a nuclear magnetic resonance imaging apparatus
US5453692A (en) * 1992-08-06 1995-09-26 Hitachi, Ltd. RF probe for nuclear magnetic resonance imaging (MRI) devices
DE4238831A1 (de) * 1992-11-17 1994-05-19 Siemens Ag Hochfrequenzeinrichtung einer Anlage zur Kernspintomographie mit einer Oberflächenspule
US5329233A (en) * 1992-12-10 1994-07-12 General Electric Company Cylindrical local coil for nuclear magnetic resonance imaging
JP3216938B2 (ja) * 1993-06-08 2001-10-09 株式会社日立製作所 Ｍｒｉ用ｒｆプローブ及び磁気共鳴撮影装置
DE4322352C2 (de) * 1993-07-05 1996-09-05 Siemens Ag Hochfrequenz-System einer Anlage zur Kernspintomographie mit einer galvanisch entkoppelten Lokalspuleneinrichtung

Also Published As

Publication number Publication date
CN1135400C (zh) 2004-01-21
GB2331587A (en) 1999-05-26
CN1221493A (zh) 1999-06-30
WO1997046895A1 (en) 1997-12-11
AU3151997A (en) 1998-01-05
IL126959A0 (en) 1999-09-22
GB9826523D0 (en) 1999-01-27
US5903150A (en) 1999-05-11
JP2000514670A (ja) 2000-11-07
GB2331587B (en) 2001-05-02

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B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 10A , 11A E 12A ANUIDADES.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AO DESPACHO 24.3 PUBLICADO NA RPI 2002 DE 19/05/2009.