DE69032436D1 - Vorrichtung mit magnetischer Resonanz mit einstellbarer Ausbeute eines Signalverstärkers - Google Patents
Vorrichtung mit magnetischer Resonanz mit einstellbarer Ausbeute eines SignalverstärkersInfo
- Publication number
- DE69032436D1 DE69032436D1 DE69032436T DE69032436T DE69032436D1 DE 69032436 D1 DE69032436 D1 DE 69032436D1 DE 69032436 T DE69032436 T DE 69032436T DE 69032436 T DE69032436 T DE 69032436T DE 69032436 D1 DE69032436 D1 DE 69032436D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic resonance
- signal amplifier
- resonance device
- adjustable output
- adjustable
- 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
- G01R33/28—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
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 |
---|---|---|---|
NL8900205A NL8900205A (nl) | 1989-01-27 | 1989-01-27 | Magnetisch resonantie-apparaat met selekteerbare voorversterker-instelling. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69032436D1 true DE69032436D1 (de) | 1998-07-30 |
DE69032436T2 DE69032436T2 (de) | 1999-02-04 |
Family
ID=19854029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1990632436 Expired - Fee Related DE69032436T2 (de) | 1989-01-27 | 1990-01-22 | Vorrichtung mit magnetischer Resonanz mit einstellbarer Ausbeute eines Signalverstärkers |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0380174B1 (de) |
JP (1) | JP2993985B2 (de) |
DE (1) | DE69032436T2 (de) |
NL (1) | NL8900205A (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4994746A (en) * | 1989-09-05 | 1991-02-19 | Advanced Techtronics, Inc. | Method of and apparatus for nuclear magnetic resonance analysis using true logarithmic amplifier |
US5451876A (en) * | 1993-10-18 | 1995-09-19 | General Electric Company | MRI system with dynamic receiver gain |
US6448770B1 (en) | 2000-03-30 | 2002-09-10 | Koninklijke Philips Electronics, N.V. | Gain selection for magnetic resonance imaging and spectroscopy |
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 |
US6977502B1 (en) | 2002-11-04 | 2005-12-20 | Fonar Corporation | Configurable matrix receiver for MRI |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61191949A (ja) * | 1985-02-19 | 1986-08-26 | Toshiba Corp | 磁気共鳴イメ−ジング装置 |
JPS622143A (ja) * | 1985-06-28 | 1987-01-08 | Yokogawa Electric Corp | Nmr撮像装置の自動利得調整装置 |
US4703267A (en) * | 1985-07-17 | 1987-10-27 | Advanced Nmr Systems, Inc. | High dynamic range in NMR data acquisition |
US4740744A (en) * | 1985-09-18 | 1988-04-26 | Lp Com | Digital signal processing apparatus for analog signals having wide frequency and dynamic ranges |
-
1989
- 1989-01-27 NL NL8900205A patent/NL8900205A/nl not_active Application Discontinuation
-
1990
- 1990-01-22 DE DE1990632436 patent/DE69032436T2/de not_active Expired - Fee Related
- 1990-01-22 EP EP90200150A patent/EP0380174B1/de not_active Expired - Lifetime
- 1990-01-24 JP JP2014728A patent/JP2993985B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0380174B1 (de) | 1998-06-24 |
EP0380174A1 (de) | 1990-08-01 |
DE69032436T2 (de) | 1999-02-04 |
JP2993985B2 (ja) | 1999-12-27 |
NL8900205A (nl) | 1990-08-16 |
JPH02239840A (ja) | 1990-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V., EINDHOVEN, N |
|
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |