DE3680160D1 - Datenerfassungssystem mit grossem dynamikbereich fuer die magnetische kernresonanz. - Google Patents
Datenerfassungssystem mit grossem dynamikbereich fuer die magnetische kernresonanz.Info
- Publication number
- DE3680160D1 DE3680160D1 DE8686305475T DE3680160T DE3680160D1 DE 3680160 D1 DE3680160 D1 DE 3680160D1 DE 8686305475 T DE8686305475 T DE 8686305475T DE 3680160 T DE3680160 T DE 3680160T DE 3680160 D1 DE3680160 D1 DE 3680160D1
- Authority
- DE
- Germany
- Prior art keywords
- data acquisition
- phase
- applying
- nmr signal
- magnetic core
- 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 - Fee Related
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
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
- G01R33/482—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a Cartesian trajectory
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- 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
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
-
- 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
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/5659—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field
-
- 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
- G01R33/3621—NMR receivers or demodulators, e.g. preamplifiers, means for frequency modulation of the MR signal using a digital down converter, means for analog to digital conversion [ADC] or for filtering or processing of the MR signal such as bandpass filtering, resampling, decimation or interpolation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- Mathematical Physics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Steroid Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/756,066 US4703267A (en) | 1985-07-17 | 1985-07-17 | High dynamic range in NMR data acquisition |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3680160D1 true DE3680160D1 (de) | 1991-08-14 |
Family
ID=25041889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686305475T Expired - Fee Related DE3680160D1 (de) | 1985-07-17 | 1986-07-16 | Datenerfassungssystem mit grossem dynamikbereich fuer die magnetische kernresonanz. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4703267A (de) |
EP (1) | EP0209375B1 (de) |
JP (1) | JPH074350B2 (de) |
AT (1) | ATE65133T1 (de) |
DE (1) | DE3680160D1 (de) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8602019A (nl) * | 1986-08-07 | 1988-03-01 | Philips Nv | Magnetische resonantiewerkwijze en -inrichting voor het elimineren van fasefouten in beeldelementen van een complexe afbeelding van een kernmagnetisatieverdeling. |
JPS63150061A (ja) * | 1986-12-15 | 1988-06-22 | 株式会社東芝 | 磁気共鳴イメ−ジング装置における高周波磁場強度設定方法 |
JPS63216551A (ja) * | 1987-03-06 | 1988-09-08 | 株式会社日立製作所 | 核磁気共鳴イメ−ジング装置 |
US4857849A (en) * | 1987-03-25 | 1989-08-15 | Mitsubishi Denki Kabushiki Kaisha | High frequency magnetic field generator for nuclear magnetic resonance |
IL82030A (en) * | 1987-03-27 | 1990-11-05 | Elscint Ltd | Separation of spectral components |
US4800889A (en) * | 1987-04-06 | 1989-01-31 | General Electric Company | Rapid-scan NMR angiography |
GB8715302D0 (en) * | 1987-06-30 | 1987-08-05 | Ordidge R J | Nmr spectroscopy |
NL8702701A (nl) * | 1987-11-12 | 1989-06-01 | Philips Nv | Werkwijze en inrichting voor automatische fasecorrectie van complexe nmr spectra. |
US4843322A (en) * | 1988-08-15 | 1989-06-27 | General Electric Company | Method for producing multi-slice NMR images |
NL8802732A (nl) * | 1988-11-08 | 1990-06-01 | Philips Nv | Magnetische resonantiewerkwijze en -inrichting. |
US4885549A (en) * | 1988-11-30 | 1989-12-05 | General Electric Company | Method of phase and amplitude correction of NMR signals using a reference marker |
US5023552A (en) * | 1989-01-27 | 1991-06-11 | U.S. Philips Corp. | Magnetic resonance device with a selectable gain signal amplifier |
NL8900205A (nl) * | 1989-01-27 | 1990-08-16 | Koninkl Philips Electronics Nv | Magnetisch resonantie-apparaat met selekteerbare voorversterker-instelling. |
DE3926889A1 (de) * | 1989-08-16 | 1991-02-21 | Spectrospin Ag | Verfahren zur simultanen messung von nmr-signalen, insbesondere zur bestimmung von flussgeschwindigkeiten in der kernspintomographie mit hilfe der multiple slice fourier flow (=muff) methode |
NL8902991A (nl) * | 1989-12-05 | 1991-07-01 | Philips Nv | Mri inrichting met optimale instelling van de detektieketen en vergroot dynamisch bereik. |
DE4205780C2 (de) * | 1992-02-26 | 1995-02-16 | Spectrospin Ag | Verfahren zur Erzeugung von NMR-Signalen mit kohärentem Phasenprofil durch Kombination von Hochfrequenzimpulsen mit inkohärentem Phasenprofil |
US5592086A (en) * | 1992-09-16 | 1997-01-07 | Weinstock; Ronald J. | Automated computerized magnetic resonance detector and analyzer |
GB9319875D0 (en) * | 1993-09-27 | 1994-03-09 | British Tech Group | Apparatus for and methods of nuclear resonance testing |
IL115469A (en) * | 1994-09-29 | 2000-07-26 | British Tech Group | Method of nuclear quadrupole resonance testing |
AU5199098A (en) * | 1996-11-07 | 1998-05-29 | Discovery Bay Company, The | Aligning seismic traces |
US6252403B1 (en) * | 1998-04-21 | 2001-06-26 | The Trustees Of The University Of Pennsylvania | Spiral volume coil for improved radio frequency field homogeneity at high static magnetic field strength |
US6570383B1 (en) * | 2000-12-27 | 2003-05-27 | Ge Medical Systems Global Technology Company, Llc | Method and apparatus for a pulse sequence for magnetic resonance imaging in an inhomogeneous magnetic field |
US6943548B1 (en) | 2001-06-22 | 2005-09-13 | Fonar Corporation | Adaptive dynamic range receiver for MRI |
US6621433B1 (en) | 2001-06-22 | 2003-09-16 | Fonar Corporation | Adaptive dynamic range receiver for MRI |
US6686737B2 (en) * | 2001-10-12 | 2004-02-03 | Baker Hughes Incorporated | Amplitude and/or phase modulated NMR pulse sequences |
US6728569B2 (en) | 2001-10-25 | 2004-04-27 | Evanston Northwestern Healthcare Corp. | Scoutless whole-body imaging with fast positioning |
US6977502B1 (en) | 2002-11-04 | 2005-12-20 | Fonar Corporation | Configurable matrix receiver for MRI |
US20070055138A1 (en) * | 2005-08-22 | 2007-03-08 | Edelman Robert R | Accelerated whole body imaging with spatially non-selective radio frequency pulses |
CN101729159A (zh) * | 2008-10-27 | 2010-06-09 | 华为技术有限公司 | 信号生成方法和装置 |
WO2013120099A1 (en) * | 2012-02-10 | 2013-08-15 | The Children's Medical Center Corporation | Nmr-based metabolite screening platform |
JP6411776B2 (ja) * | 2014-05-30 | 2018-10-24 | 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 | 磁気共鳴装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3786341A (en) * | 1972-10-26 | 1974-01-15 | Varian Associates | Magnetic resonance spectrometer employing stochastic resonance by a pseudorandom binary sequence and time-share modulation |
US3968424A (en) * | 1974-08-01 | 1976-07-06 | Varian Associates | Fourier transform NMR spectroscopy employing a phase modulated rf carrier |
US4034191A (en) * | 1974-08-05 | 1977-07-05 | Varian Associates, Inc. | Spectrometer means employing linear synthesized RF excitation |
US4291272A (en) * | 1979-12-28 | 1981-09-22 | International Business Machines Corporation | Method for reducing homonuclear broadening in magnetic resonance spectra of solids |
DE3233050C2 (de) * | 1981-09-09 | 1997-04-24 | British Tech Group | Verfahren der hochauflösenden Impuls-Kernresonanzspektroskopie |
US4486709A (en) * | 1982-11-22 | 1984-12-04 | Bendall Max R | Depth and refocusing pulses for use with inhomogeneous radiofrequency coils in nuclear magnetic resonance spectroscopy |
GB8331501D0 (en) * | 1983-11-25 | 1984-01-04 | Picker Int Ltd | Nuclear magnetic resonance |
JPS60165951A (ja) * | 1984-02-10 | 1985-08-29 | 株式会社東芝 | 磁気共鳴イメージング装置 |
EP0164142B1 (de) * | 1984-05-02 | 1991-03-27 | Koninklijke Philips Electronics N.V. | Verfahren und Anordnung zur Ermittlung einer Kernmagnetisierungsverteilung in einem Teil eines Körpers |
-
1985
- 1985-07-17 US US06/756,066 patent/US4703267A/en not_active Expired - Fee Related
-
1986
- 1986-07-16 EP EP86305475A patent/EP0209375B1/de not_active Expired - Lifetime
- 1986-07-16 AT AT86305475T patent/ATE65133T1/de not_active IP Right Cessation
- 1986-07-16 DE DE8686305475T patent/DE3680160D1/de not_active Expired - Fee Related
- 1986-07-17 JP JP61168985A patent/JPH074350B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE65133T1 (de) | 1991-07-15 |
JPS6272347A (ja) | 1987-04-02 |
US4703267A (en) | 1987-10-27 |
EP0209375A3 (en) | 1988-01-07 |
EP0209375A2 (de) | 1987-01-21 |
JPH074350B2 (ja) | 1995-01-25 |
EP0209375B1 (de) | 1991-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |