DE602004032047D1 - Schaltungsanordnung zum verstimmen eines resonanzkreises einer mr-vorrichtung - Google Patents
Schaltungsanordnung zum verstimmen eines resonanzkreises einer mr-vorrichtungInfo
- Publication number
- DE602004032047D1 DE602004032047D1 DE602004032047T DE602004032047T DE602004032047D1 DE 602004032047 D1 DE602004032047 D1 DE 602004032047D1 DE 602004032047 T DE602004032047 T DE 602004032047T DE 602004032047 T DE602004032047 T DE 602004032047T DE 602004032047 D1 DE602004032047 D1 DE 602004032047D1
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- tuning
- resonance
- circuit arrangement
- resonance circuit
- 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.)
- Active
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
- G01R33/3692—Electrical details, e.g. matching or coupling of the coil to the receiver involving signal transmission without using electrically conductive connections, e.g. wireless communication or optical communication of the MR signal or an auxiliary signal other than the MR signal
-
- 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
-
- 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
- G01R33/285—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03104569 | 2003-12-08 | ||
PCT/IB2004/052536 WO2005057232A1 (en) | 2003-12-08 | 2004-11-24 | Circuit arrangement for detuning a resonant circuit of an mr apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
DE602004032047D1 true DE602004032047D1 (de) | 2011-05-12 |
Family
ID=34673589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE602004032047T Active DE602004032047D1 (de) | 2003-12-08 | 2004-11-24 | Schaltungsanordnung zum verstimmen eines resonanzkreises einer mr-vorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US7538554B2 (de) |
EP (1) | EP1695105B1 (de) |
JP (1) | JP4820301B2 (de) |
CN (1) | CN1890577B (de) |
AT (1) | ATE504006T1 (de) |
DE (1) | DE602004032047D1 (de) |
WO (1) | WO2005057232A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0618087D0 (en) * | 2006-09-14 | 2006-10-25 | Imp Innovations Ltd | Magnetic resonance systems |
WO2008078270A1 (en) * | 2006-12-21 | 2008-07-03 | Koninklijke Philips Electronics N.V. | Detuning circuit and detuning method for an mri system |
DE102008014751B4 (de) * | 2008-03-18 | 2015-01-15 | Siemens Aktiengesellschaft | Verfahren zum Betrieb einer Anordnung zur Verstimmung einer Empfangsantenne bei einer Lokalspule |
JP5121523B2 (ja) * | 2008-03-24 | 2013-01-16 | オリンパスメディカルシステムズ株式会社 | 位置検出システム |
US9827976B2 (en) * | 2008-10-09 | 2017-11-28 | Toyota Jidosha Kabushiki Kaisha | Non-contact power reception device and vehicle including the same |
EP2270529A1 (de) * | 2009-07-03 | 2011-01-05 | Koninklijke Philips Electronics N.V. | Verstimmbare RF-Empfangsantennenvorrichtung |
US8749237B2 (en) * | 2011-01-11 | 2014-06-10 | General Electric Company | Optically controlled MEMS switch and method of using the same |
EP2715386A1 (de) | 2011-05-23 | 2014-04-09 | Koninklijke Philips N.V. | Fet-schalter als verstimmungsschaltung für mri-rf-spulen |
DE102012210827B4 (de) | 2012-06-26 | 2016-01-21 | Siemens Aktiengesellschaft | Bestimmung einer Kommunikationslatenz in einem Magnetresonanztomographen |
US10094895B2 (en) | 2012-11-05 | 2018-10-09 | Koninklijke Philips N.V. | Transmit/receive switching circuitry with improved radio frequency isolation |
US9209757B1 (en) * | 2013-10-30 | 2015-12-08 | Cirrus Logic, Inc. | Energy-efficient personal audio device output stage with signal polarity-dependent power supply update rate |
JP6074126B1 (ja) * | 2014-01-28 | 2017-02-01 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | k空間中心のサンプリングを用いるゼロエコー時間MR撮像 |
US11073581B2 (en) | 2019-05-22 | 2021-07-27 | Synaptive Medical Inc. | System and method for integrated active detuning in magnetic resonance imaging |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8603252A (nl) | 1986-12-22 | 1988-07-18 | Philips Nv | Magnetisch resonantie-apparaat met verstemde rf-spoel. |
FI83819C (fi) | 1989-11-27 | 1991-08-26 | Instrumentarium Oy | Spol- och kopplingsarrangemang. |
US5212450A (en) * | 1990-10-25 | 1993-05-18 | Fox Chase Cancer Center | Radio frequency volume resonator for nuclear magnetic resonance |
JPH04224735A (ja) * | 1990-12-27 | 1992-08-14 | Hitachi Medical Corp | 磁気共鳴イメージング装置用高周波変調器 |
US5483158A (en) | 1993-10-21 | 1996-01-09 | The Regents Of The University Of California | Method and apparatus for tuning MRI RF coils |
JPH07265278A (ja) * | 1994-03-31 | 1995-10-17 | Hitachi Medical Corp | Rfプローブ |
US5666055A (en) * | 1995-10-02 | 1997-09-09 | Jones; Randall W. | Surface coil system for a single channel NMR receiver |
JP3615617B2 (ja) * | 1996-04-18 | 2005-02-02 | 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 |
DE19744763C2 (de) | 1997-10-10 | 1999-09-02 | Bruker Ag | NMR-Probenkopf mit integrierter Fernabstimmung |
DE19746735C2 (de) | 1997-10-13 | 2003-11-06 | Simag Gmbh Systeme Und Instr F | NMR-Bildgebungsverfahren zur Darstellung, Positionsbestimmung oder funktionellen Kontrolle einer in ein Untersuchungsobjekt eingeführten Vorrichtung und Vorrichtung zur Verwendung in einem derartigen Verfahren |
DE19755782A1 (de) * | 1997-12-16 | 1999-06-17 | Philips Patentverwaltung | MR-Anordnung mit einem medizinischen Instrument und Verfahren zur Positionsbestimmung des medizinischen Instruments |
US6850064B1 (en) * | 1999-11-24 | 2005-02-01 | Advanced Imaging Research, Inc. | Radio-frequency coil array for resonance imaging analysis |
US6414488B1 (en) * | 2000-03-01 | 2002-07-02 | Koninklijke Philips Electronics N.V. | Method and apparatus for decoupling magnetic resonance receive coils |
AU2001251078A1 (en) | 2000-03-30 | 2001-10-15 | Case Western Reserve University | Wireless detuning of a resonant circuit in an mr imaging system |
DE10016378A1 (de) | 2000-04-04 | 2001-10-11 | Winfried Koegler | Stoff-Figur |
US6552544B2 (en) | 2001-04-05 | 2003-04-22 | Varian, Inc. | Detunable coil assembly and method of detuning RF coil for MRI |
US6593744B2 (en) * | 2001-11-20 | 2003-07-15 | Koninklijke Philips Electronics, N.V. | Multi-channel RF cable trap for magnetic resonance apparatus |
JP3455530B1 (ja) * | 2001-12-14 | 2003-10-14 | 株式会社東芝 | Mr信号受信装置及び磁気共鳴イメージング装置 |
DE10249239A1 (de) * | 2002-10-23 | 2004-05-06 | Philips Intellectual Property & Standards Gmbh | Magnetresonanz-Bildgerät mit elektrischer Zusatzeinrichtung |
WO2004048987A2 (en) * | 2002-11-27 | 2004-06-10 | Koninklijke Philips Electronics N.V. | Degenerate birdcage coil and transmit/receive apparatus and method for same |
DE10255261A1 (de) * | 2002-11-27 | 2004-06-09 | Philips Intellectual Property & Standards Gmbh | HF-Spulenanordnung für Magnetresonanz-Bildgerät |
DE10313004B3 (de) * | 2003-03-24 | 2005-01-20 | Siemens Ag | Verfahren zur Modenbildung, Verfahren zur Modenbereitstellung und Empfangseinheit für ein Magnetresonanzgerät |
-
2004
- 2004-11-24 US US10/596,147 patent/US7538554B2/en not_active Expired - Fee Related
- 2004-11-24 WO PCT/IB2004/052536 patent/WO2005057232A1/en active Application Filing
- 2004-11-24 AT AT04799234T patent/ATE504006T1/de not_active IP Right Cessation
- 2004-11-24 JP JP2006543671A patent/JP4820301B2/ja not_active Expired - Fee Related
- 2004-11-24 DE DE602004032047T patent/DE602004032047D1/de active Active
- 2004-11-24 CN CN200480036396XA patent/CN1890577B/zh not_active Expired - Fee Related
- 2004-11-24 EP EP04799234A patent/EP1695105B1/de not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
ATE504006T1 (de) | 2011-04-15 |
US20070268018A1 (en) | 2007-11-22 |
JP4820301B2 (ja) | 2011-11-24 |
EP1695105A1 (de) | 2006-08-30 |
WO2005057232A1 (en) | 2005-06-23 |
JP2007512934A (ja) | 2007-05-24 |
CN1890577A (zh) | 2007-01-03 |
CN1890577B (zh) | 2010-05-12 |
EP1695105B1 (de) | 2011-03-30 |
US7538554B2 (en) | 2009-05-26 |
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