DE69028962D1 - Magnetresonanzsysteme - Google Patents
MagnetresonanzsystemeInfo
- Publication number
- DE69028962D1 DE69028962D1 DE69028962T DE69028962T DE69028962D1 DE 69028962 D1 DE69028962 D1 DE 69028962D1 DE 69028962 T DE69028962 T DE 69028962T DE 69028962 T DE69028962 T DE 69028962T DE 69028962 D1 DE69028962 D1 DE 69028962D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic resonance
- resonance systems
- systems
- magnetic
- resonance
- 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.)
- Expired - Lifetime
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
- G01R33/3607—RF waveform generators, e.g. frequency generators, amplitude-, frequency- or phase modulators or shifters, pulse programmers, digital to analog converters for the RF signal, means for filtering or attenuating of the RF signal
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/392,649 US5170123A (en) | 1989-08-11 | 1989-08-11 | Magnetic resonance imager with digital transmitter/receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69028962D1 true DE69028962D1 (de) | 1996-11-28 |
DE69028962T2 DE69028962T2 (de) | 1997-02-20 |
Family
ID=23551462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69028962T Expired - Lifetime DE69028962T2 (de) | 1989-08-11 | 1990-08-06 | Magnetresonanzsysteme |
Country Status (4)
Country | Link |
---|---|
US (1) | US5170123A (de) |
EP (1) | EP0412747B1 (de) |
JP (1) | JP3018197B2 (de) |
DE (1) | DE69028962T2 (de) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2719668B1 (fr) * | 1994-05-05 | 1996-07-12 | Sadis Bruker Spectrospin | Dispositif de génération d'impulsions d'excitation radiofréquence et procédé mettant en Óoeuvre ledit dispositif. |
US5529068A (en) * | 1994-06-16 | 1996-06-25 | The Regents Of The University Of California | Synchronized digital signal processor for MRI reception |
GB2303453A (en) * | 1995-07-17 | 1997-02-19 | Univ California | Digital MRI receiver with reduced data truncation effects |
US5739691A (en) * | 1995-11-28 | 1998-04-14 | The Regents Of The University Of California | Multi-frequency digital low pass filter for magnetic resonance imaging |
US5652518A (en) * | 1996-06-11 | 1997-07-29 | Varian Associates, Inc. | Digital filter pre-charging |
US5867410A (en) * | 1996-09-27 | 1999-02-02 | Varian Associates, Inc. | Time correction for digital filters in transient measurments |
JP2981208B1 (ja) * | 1998-06-01 | 1999-11-22 | 松下電器産業株式会社 | 非観血連続血圧計 |
JP3046275B2 (ja) * | 1998-04-20 | 2000-05-29 | 松下電器産業株式会社 | 非観血連続血圧計 |
JP3037266B2 (ja) * | 1998-05-13 | 2000-04-24 | 松下電器産業株式会社 | 非観血連続血圧計 |
DE19828955C2 (de) * | 1998-06-29 | 2000-07-06 | Siemens Ag | Digitaler Schwingungserzeuger |
US6297637B1 (en) | 1998-12-29 | 2001-10-02 | Siemens Aktiengesellschaft | High-frequency receiver, particularly for a nuclear magnetic resonance apparatus |
US6259253B1 (en) * | 1999-06-10 | 2001-07-10 | Ohio State University Research Foundation | MRI transceiver |
DE10004423C2 (de) * | 2000-02-02 | 2002-01-31 | Siemens Ag | Zusatzgerät für ein Steuergerät für einen Magnetresonanztomographen |
DE10007679C2 (de) * | 2000-02-19 | 2002-06-20 | Bruker Ag Faellanden | Frequenzgenerator für NMR-Anwendungen mit direkter digitaler Frequenzsynthese (DDS), Verfahren zum Betrieb eines solchen DDS-Generators sowie Verfahren zum Betrieb eines NMR-Spektrometers mit DDS-Generator |
EP1193506A3 (de) * | 2000-09-29 | 2004-07-21 | Siemens Aktiengesellschaft | Verfahren zum Abtasten eines hochfrequenten Empfangssignals, insbesondere eines Hochfrequenzsignals einer Empfangsspule eines Magnetresonanzgeräts |
DE10125233C1 (de) * | 2001-05-22 | 2002-12-12 | Siemens Ag | Empfangsvorrichtung für eine Kernspintomographieanlage |
JP3884244B2 (ja) * | 2001-07-04 | 2007-02-21 | 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 | Rf送信回路およびmri装置 |
DE102004017667B4 (de) * | 2004-04-10 | 2006-11-30 | Bruker Biospin Ag | Digitale Filter für NMR- und MRI-Anwendungen |
US7378844B2 (en) * | 2004-09-30 | 2008-05-27 | General Electric Company | Magnetic resonance system, receiver & method of generating detecting and digitizing analog MR signals solely within the MR shielded environment |
JP2007003458A (ja) * | 2005-06-27 | 2007-01-11 | Jeol Ltd | ディジタル直交ロックイン検出方法及び装置 |
US7615997B2 (en) * | 2005-10-28 | 2009-11-10 | Koninklijke Philips Electronics N.V. | Simultaneous MR-excitation of multiple nuclei with a single RF amplifier |
US7606551B2 (en) * | 2006-03-01 | 2009-10-20 | Siemens Aktiengesellschaft | Mixer circuit with balanced frequency mixer with varactor diodes |
DE102006052437B4 (de) | 2006-11-07 | 2011-04-21 | Siemens Ag | Magnetresonanzanlage mit Komponenten |
JP5530095B2 (ja) * | 2008-12-10 | 2014-06-25 | 株式会社日立製作所 | ディジタル処理装置、信号解析システムおよび信号解析方法 |
US8049496B2 (en) * | 2008-12-17 | 2011-11-01 | National Taiwan University | Wideband magnetic resonance imaging apparatus and method |
US9417300B2 (en) | 2009-12-17 | 2016-08-16 | Koninklijke Philips N.V. | Direct digital receiver with local free running clock |
DE102011086288B4 (de) * | 2011-11-14 | 2014-10-09 | Siemens Aktiengesellschaft | Magnetresonanztomographie-System, Empfangsvorrichtung für ein solches System sowie Verfahren zum Gewinnen eines Bildsignals in dem System |
CN103760507B (zh) * | 2014-01-02 | 2016-09-21 | 北京大学 | 一种实现发射源和接收源相位同步的方法及装置 |
DE102014206311B3 (de) | 2014-04-02 | 2015-10-08 | Siemens Aktiengesellschaft | Empfangssystem für Lokalspulen eines Magnetresonanztomographiesystems |
CN106716165B (zh) * | 2014-09-25 | 2020-01-07 | 皇家飞利浦有限公司 | 具有内置接收相位噪声指示器的数字接收器线圈 |
CN112462308A (zh) * | 2020-10-21 | 2021-03-09 | 上海东软医疗科技有限公司 | 磁共振信号接收装置和磁共振设备 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4694254A (en) * | 1985-06-10 | 1987-09-15 | General Electric Company | Radio-frequency spectrometer subsystem for a magnetic resonance imaging system |
US4740744A (en) * | 1985-09-18 | 1988-04-26 | Lp Com | Digital signal processing apparatus for analog signals having wide frequency and dynamic ranges |
EP0266398A4 (de) * | 1986-04-21 | 1990-06-27 | Univ Leland Stanford Junior | Lokalisationsvorrichtung mittels magnetischer kernresonanz mit vermindertem rauschen. |
US4777438A (en) * | 1987-04-27 | 1988-10-11 | Picker International, Inc. | Multiple imaging with improved signal-to-noise ratio |
NL8701195A (nl) * | 1987-05-19 | 1988-12-16 | Philips Nv | M.r.i.-inrichting met digitale zender/ontvanger. |
DE3821984A1 (de) * | 1988-06-30 | 1990-04-12 | Philips Patentverwaltung | Schaltungsanordnung zur erzeugung von hochfrequenzsignalen fuer kernspinuntersuchungen |
US4992736A (en) * | 1989-08-04 | 1991-02-12 | General Electric Company | Radio frequency receiver for a NMR instrument |
-
1989
- 1989-08-11 US US07/392,649 patent/US5170123A/en not_active Expired - Lifetime
-
1990
- 1990-08-06 DE DE69028962T patent/DE69028962T2/de not_active Expired - Lifetime
- 1990-08-06 EP EP90308617A patent/EP0412747B1/de not_active Expired - Lifetime
- 1990-08-09 JP JP2213552A patent/JP3018197B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03118045A (ja) | 1991-05-20 |
EP0412747A3 (en) | 1991-10-09 |
US5170123A (en) | 1992-12-08 |
EP0412747A2 (de) | 1991-02-13 |
JP3018197B2 (ja) | 2000-03-13 |
DE69028962T2 (de) | 1997-02-20 |
EP0412747B1 (de) | 1996-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: PATENTANWAELTE REICHEL UND REICHEL, 60322 FRANKFURT |
|
8328 | Change in the person/name/address of the agent |
Representative=s name: 2K PATENTANWAELTE BLASBERG KEWITZ & REICHEL, PARTN |