DE3874964D1 - Apparat zur magnet-resonanz-abbildung. - Google Patents
Apparat zur magnet-resonanz-abbildung.Info
- Publication number
- DE3874964D1 DE3874964D1 DE8888303793T DE3874964T DE3874964D1 DE 3874964 D1 DE3874964 D1 DE 3874964D1 DE 8888303793 T DE8888303793 T DE 8888303793T DE 3874964 T DE3874964 T DE 3874964T DE 3874964 D1 DE3874964 D1 DE 3874964D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic resonance
- resonance image
- image
- 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
- G01R33/3621—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
-
- 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
- G01R33/28—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
- G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
- G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/042,894 US4777438A (en) | 1987-04-27 | 1987-04-27 | Multiple imaging with improved signal-to-noise ratio |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3874964D1 true DE3874964D1 (de) | 1992-11-05 |
DE3874964T2 DE3874964T2 (de) | 1993-02-18 |
Family
ID=21924299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8888303793T Expired - Lifetime DE3874964T2 (de) | 1987-04-27 | 1988-04-27 | Apparat zur magnet-resonanz-abbildung. |
Country Status (3)
Country | Link |
---|---|
US (1) | US4777438A (de) |
EP (1) | EP0293085B1 (de) |
DE (1) | DE3874964T2 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4825162A (en) * | 1987-12-07 | 1989-04-25 | General Electric Company | Nuclear magnetic resonance (NMR) imaging with multiple surface coils |
EP0344293B1 (de) * | 1987-12-07 | 1995-03-15 | General Electric Company | Magnetische Kernresonanz(NMR)-Bildgebung mit mehreren Oberflächenspulen |
US4859945A (en) * | 1988-05-03 | 1989-08-22 | Elscint Ltd. | Optimized signal to noise ratio |
US4878022A (en) * | 1988-10-14 | 1989-10-31 | The Regents Of The University Of California | Widened and shaped MRI surface coil having increased signal-to-noise ratio |
US4959611A (en) * | 1989-06-29 | 1990-09-25 | Picker International, Inc. | Out-of-slice artifact reduction technique for magnetic resonance imagers |
US5208534A (en) * | 1989-08-09 | 1993-05-04 | Kabushiki Kaisha Toshiba | Magnetic resonance imaging system |
US5170123A (en) * | 1989-08-11 | 1992-12-08 | Picker International, Inc. | Magnetic resonance imager with digital transmitter/receiver |
US5464014A (en) * | 1991-10-03 | 1995-11-07 | Sugan Company Limited | Display device for bioelectrical and biophysical phenomena |
US5374890A (en) * | 1992-07-24 | 1994-12-20 | Picker International, Inc. | Simultaneous magnetic resonance imaging of multiple human organs |
US5285160A (en) * | 1992-08-06 | 1994-02-08 | U.S. Philips Corporation | Magnetic resonance apparatus comprising adjacently arranged RF coils systems |
DE19526778C1 (de) * | 1995-07-21 | 1997-01-23 | Siemens Ag | Verfahren zum Kompensieren eines Empfindlichkeitsprofils einer Antennenanordnung eines Magnetresonanzgeräts |
GB2374672A (en) * | 2001-04-20 | 2002-10-23 | Marconi Medical Systems Uk Ltd | Magnetic Resonance Imaging |
EP1593342B1 (de) * | 2003-02-10 | 2011-12-14 | Hitachi Metals, Ltd. | Magnetfeldproduzierende vorrichtung |
NL1025276C1 (nl) * | 2004-01-16 | 2005-07-19 | Matthijs Oudkerk | Magnetische resonantie (MRI) beeldtechniek met simultane meervoudige excitatie van objectdelen. |
EP1825287A2 (de) * | 2004-12-06 | 2007-08-29 | Koninklijke Philips Electronics N.V. | Frequenzbereichsmultiplexübertragung von mr-signalen von einer empfängerspulengruppe |
US7173426B1 (en) * | 2005-11-29 | 2007-02-06 | General Electric Company | Optical link for transmitting data through air from a plurality of receiver coils in a magnetic resonance imaging system |
JP5117747B2 (ja) * | 2007-03-23 | 2013-01-16 | 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コイルおよび磁気共鳴イメージング装置 |
WO2009070717A1 (en) * | 2007-11-27 | 2009-06-04 | Kim Jae K | Noise reduction by means of spectral parallelism |
DE102010027672B4 (de) * | 2010-07-20 | 2012-09-27 | Siemens Aktiengesellschaft | Vorverarbeitungseinrichtung für Empfangssignale einer Lokalspule, Lokalspule und Verfahren zur Bereitstellung wenigstens eines Hilfsfrequenzsignals |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4361807A (en) * | 1979-08-10 | 1982-11-30 | Picker International Limited | Nuclear magnetic resonance systems |
JPS5938637A (ja) * | 1982-08-28 | 1984-03-02 | Toshiba Corp | 核磁気共鳴装置 |
CA1198162A (en) * | 1982-09-23 | 1985-12-17 | Robert D. Hay | Nmr imaging apparatus |
FI65862C (fi) * | 1982-10-11 | 1984-07-10 | Instrumentarium Oy | Nmr-avbildningsapparat |
GB8329196D0 (en) * | 1983-11-02 | 1983-12-07 | Bydder G M | Nuclear magnetic resonance apparatus |
US4623843A (en) * | 1984-08-01 | 1986-11-18 | Albert Macovski | NMR imaging system using excited reference coils |
US4564017A (en) * | 1984-11-21 | 1986-01-14 | General Electric Company | Method and apparatus for respiration monitoring with an NMR scanner |
US4668915A (en) * | 1985-03-15 | 1987-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Non-uniform field magnetic resonance dual patient imaging system |
US4691163A (en) * | 1985-03-19 | 1987-09-01 | Elscint Ltd. | Dual frequency surface probes |
US4665368A (en) * | 1985-04-16 | 1987-05-12 | Yokogawa Hokushin Electric Corporation | NMR imaging apparatus |
-
1987
- 1987-04-27 US US07/042,894 patent/US4777438A/en not_active Expired - Lifetime
-
1988
- 1988-04-27 EP EP88303793A patent/EP0293085B1/de not_active Expired
- 1988-04-27 DE DE8888303793T patent/DE3874964T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3874964T2 (de) | 1993-02-18 |
EP0293085A1 (de) | 1988-11-30 |
EP0293085B1 (de) | 1992-09-30 |
US4777438A (en) | 1988-10-11 |
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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 |