JP2007322361A - 核磁気共鳴装置用プローブ及び核磁気共鳴装置 - Google Patents
核磁気共鳴装置用プローブ及び核磁気共鳴装置 Download PDFInfo
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- JP2007322361A JP2007322361A JP2006155971A JP2006155971A JP2007322361A JP 2007322361 A JP2007322361 A JP 2007322361A JP 2006155971 A JP2006155971 A JP 2006155971A JP 2006155971 A JP2006155971 A JP 2006155971A JP 2007322361 A JP2007322361 A JP 2007322361A
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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
- G01R33/36—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
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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
- G01R33/34053—Solenoid coils; Toroidal 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
- G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
- G01R33/34069—Saddle 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
- G01R33/34015—Temperature-controlled RF coils
- G01R33/34023—Superconducting RF coils
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
【解決手段】試料に高周波電磁波を照射する送信コイルと、試料が放出する核磁気共鳴信号を検出する受信コイルとを具備する核磁気共鳴装置用プローブにおいて、送信コイルに切替スイッチを配置し、照射時と検出時で送信回路の共振状態を切り替えて、送受間の電磁気的な結合が残っていたとしても受信コイルの感度の低下を抑える。
【選択図】図1
Description
Claims (13)
- 試料に高周波電磁波を照射する送信コイルと、試料が放出する核磁気共鳴信号を検出する受信コイルとを具備する核磁気共鳴装置用プローブにおいて、前記送信コイルに切替スイッチを備えたことを特徴とする核磁気共鳴装置用プローブ。
- 請求項1において、前記切替スイッチが送信コイルと直列に挿入されていることを特徴とする核磁気共鳴装置用プローブ。
- 請求項2において、前記切替スイッチが照射時に入、受信時に切と動作することを特徴とする核磁気共鳴装置用プローブ。
- 請求項1において、前記切替スイッチが送信コイルと並列に挿入されていることを特徴とする核磁気共鳴装置用プローブ。
- 請求項4において、前記切替スイッチが照射時に切、受信時に入と動作することを特徴とする核磁気共鳴装置用プローブ。
- 請求項1において、前記切替スイッチに超電導体を用いたことを特徴とする核磁気共鳴装置用プローブ。
- 請求項6において、前記超電導体を用いた切替スイッチが、臨界電流を閾値として送受の状態に応じ受動的に切り替わるものであることを特徴とする核磁気共鳴装置用プローブ。
- 請求項6において、前記超電導体を用いた切替スイッチが、ヒータ加熱による温度上昇により能動的に切り替わるものであることを特徴とする核磁気共鳴装置用プローブ。
- 請求項8において、前記ヒータ加熱の制御電流が平常時と送信時に入であり、受信時と受信切り替え動作時のみ切と動作し、平常時と送信時に前記切替スイッチを入、受信時に前記切替スイッチを切と動作させることを特徴とする核磁気共鳴装置用プローブ。
- 請求項1において、前記切替スイッチに半導体素子を用いたことを特徴とする核磁気共鳴装置用プローブ。
- 試料に高周波電磁波を照射する送信コイルと、試料が放出する核磁気共鳴信号を検出する受信コイルを備え、前記送信コイルに切替スイッチを有するプローブを備えたことを特徴とする核磁気共鳴装置。
- 請求項11において、前記切替スイッチに超電導体を用いたことを特徴とする核磁気共鳴装置。
- 請求項11において、前記切替スイッチに半導体素子を用いたことを特徴とする核磁気共鳴装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006155971A JP2007322361A (ja) | 2006-06-05 | 2006-06-05 | 核磁気共鳴装置用プローブ及び核磁気共鳴装置 |
US11/757,453 US7609064B2 (en) | 2006-06-05 | 2007-06-04 | Probe configured for NMR apparatus and NMR apparatus using the same |
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JP2006155971A JP2007322361A (ja) | 2006-06-05 | 2006-06-05 | 核磁気共鳴装置用プローブ及び核磁気共鳴装置 |
Publications (1)
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JP2007322361A true JP2007322361A (ja) | 2007-12-13 |
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JP2006155971A Pending JP2007322361A (ja) | 2006-06-05 | 2006-06-05 | 核磁気共鳴装置用プローブ及び核磁気共鳴装置 |
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US (1) | US7609064B2 (ja) |
JP (1) | JP2007322361A (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009216431A (ja) * | 2008-03-07 | 2009-09-24 | Hitachi Ltd | Nmrプローブ |
JP2010210480A (ja) * | 2009-03-11 | 2010-09-24 | Hitachi Ltd | 信号送受信回路、信号送受信装置、nmrプローブおよび核磁気共鳴装置 |
CN101923147A (zh) * | 2010-07-17 | 2010-12-22 | 深圳市特深电气有限公司 | 磁共振设备用探头及其磁共振设备 |
US8476905B2 (en) | 2008-12-11 | 2013-07-02 | Hitachi, Ltd. | Signal transmitting and receiving circuit, a NMR probe, and a nuclear magnetic resonance equipment |
WO2020054686A1 (ja) * | 2018-09-13 | 2020-03-19 | 国立研究開発法人理化学研究所 | 磁気共鳴測定装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007322361A (ja) * | 2006-06-05 | 2007-12-13 | Hitachi Ltd | 核磁気共鳴装置用プローブ及び核磁気共鳴装置 |
JP4879829B2 (ja) * | 2007-07-19 | 2012-02-22 | 株式会社日立製作所 | 高周波コイル及び磁気共鳴撮像装置 |
JP5386550B2 (ja) * | 2011-07-05 | 2014-01-15 | 株式会社日立製作所 | 超電導スイッチ,超電導磁石、およびmri |
US9588082B2 (en) | 2013-05-31 | 2017-03-07 | Nuscale Power, Llc | Steam generator tube probe and method of inspection |
DE102013215918B4 (de) * | 2013-08-12 | 2017-07-27 | Siemens Healthcare Gmbh | Thermostabilisierung einer Antennenanordnung für Magnetresonanztomographie |
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JPH0799723B2 (ja) * | 1985-10-24 | 1995-10-25 | 三菱電機株式会社 | 均一磁界コイル |
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US5898306A (en) * | 1997-04-09 | 1999-04-27 | Regents Of The University Of Minnesota | Single circuit ladder resonator quadrature surface RF coil |
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US6414488B1 (en) * | 2000-03-01 | 2002-07-02 | Koninklijke Philips Electronics N.V. | Method and apparatus for decoupling magnetic resonance receive coils |
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JP2002207072A (ja) | 2001-01-09 | 2002-07-26 | Jeol Ltd | Nmr装置の送受信回路 |
EP1581818A2 (en) * | 2002-11-27 | 2005-10-05 | Koninklijke Philips Electronics N.V. | Degenerate birdcage coil and transmit/receive apparatus and method for same |
DE102004053777B4 (de) * | 2003-11-19 | 2010-09-02 | Siemens Ag | Verfahren zum Bestimmen eines Einstellparameters einer Hochfrequenzsendeanordnung für eine Magnetresonanzanlage |
US7332910B2 (en) * | 2003-11-24 | 2008-02-19 | E.I. Du Pont De Nemours And Company | Frequency detection system comprising circuitry for adjusting the resonance frequency of a high temperature superconductor self-resonant coil |
EP1711840A2 (en) * | 2004-02-04 | 2006-10-18 | E.I.Du pont de nemours and company | Nqr rf coil assembly comprising two or more coils which may be made from hts |
US7265549B2 (en) * | 2004-04-30 | 2007-09-04 | E. I. Du Pont De Nemours And Company | Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to the same frequency |
US7279897B2 (en) * | 2004-04-30 | 2007-10-09 | E. I. Du Pont De Nemours And Company | Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to different frequencies |
EP1740967A2 (en) * | 2004-04-30 | 2007-01-10 | E.I.Du pont de nemours and company | Methods and apparatus for scanning a band of frequencies using an array of high temperature superconductor sensors |
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EP1828797A1 (en) * | 2004-12-03 | 2007-09-05 | E.I. Dupont De Nemours And Company | Decoupling of excitation and receive coils of an nqr detection system during signal reception |
US7227360B2 (en) * | 2005-01-14 | 2007-06-05 | Invivo Corporation | Phased array MRI coil with controllable coupled ring resonator |
JP2007322361A (ja) * | 2006-06-05 | 2007-12-13 | Hitachi Ltd | 核磁気共鳴装置用プローブ及び核磁気共鳴装置 |
-
2006
- 2006-06-05 JP JP2006155971A patent/JP2007322361A/ja active Pending
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2007
- 2007-06-04 US US11/757,453 patent/US7609064B2/en not_active Expired - Fee Related
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009216431A (ja) * | 2008-03-07 | 2009-09-24 | Hitachi Ltd | Nmrプローブ |
JP4633131B2 (ja) * | 2008-03-07 | 2011-02-16 | 株式会社日立製作所 | Nmrプローブ |
US8035386B2 (en) | 2008-03-07 | 2011-10-11 | Hitachi, Ltd. | NMR probe with magnetic field irradiating coil and NMR signal receiving coil |
US8476905B2 (en) | 2008-12-11 | 2013-07-02 | Hitachi, Ltd. | Signal transmitting and receiving circuit, a NMR probe, and a nuclear magnetic resonance equipment |
JP2010210480A (ja) * | 2009-03-11 | 2010-09-24 | Hitachi Ltd | 信号送受信回路、信号送受信装置、nmrプローブおよび核磁気共鳴装置 |
CN101923147A (zh) * | 2010-07-17 | 2010-12-22 | 深圳市特深电气有限公司 | 磁共振设备用探头及其磁共振设备 |
WO2020054686A1 (ja) * | 2018-09-13 | 2020-03-19 | 国立研究開発法人理化学研究所 | 磁気共鳴測定装置 |
JP2020041985A (ja) * | 2018-09-13 | 2020-03-19 | 国立研究開発法人理化学研究所 | 磁気共鳴測定装置 |
JP7321487B2 (ja) | 2018-09-13 | 2023-08-07 | 国立研究開発法人理化学研究所 | 磁気共鳴測定装置 |
US11852702B2 (en) | 2018-09-13 | 2023-12-26 | Riken | Magnetic resonance measurement apparatus |
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US7609064B2 (en) | 2009-10-27 |
US20080061786A1 (en) | 2008-03-13 |
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