FI903862A0 - Radiofrekvensmottagare foer ett nmr instrument. - Google Patents

Radiofrekvensmottagare foer ett nmr instrument.

Info

Publication number
FI903862A0
FI903862A0 FI903862A FI903862A FI903862A0 FI 903862 A0 FI903862 A0 FI 903862A0 FI 903862 A FI903862 A FI 903862A FI 903862 A FI903862 A FI 903862A FI 903862 A0 FI903862 A0 FI 903862A0
Authority
FI
Finland
Prior art keywords
etr
radio frequency
nmr instrument
frequency movement
movement
Prior art date
Application number
FI903862A
Other languages
English (en)
Inventor
Robert Steven Stormont
Michael Charles Anas
Norbert Joseph Pelc
Original Assignee
Gen Electric
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gen Electric filed Critical Gen Electric
Publication of FI903862A0 publication Critical patent/FI903862A0/fi

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
    • G01R33/3678—Electrical details, e.g. matching or coupling of the coil to the receiver involving quadrature drive or detection, e.g. a circularly polarized 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
    • 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
FI903862A 1989-08-04 1990-08-03 Radiofrekvensmottagare foer ett nmr instrument. FI903862A0 (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/389,456 US4992736A (en) 1989-08-04 1989-08-04 Radio frequency receiver for a NMR instrument

Publications (1)

Publication Number Publication Date
FI903862A0 true FI903862A0 (fi) 1990-08-03

Family

ID=23538342

Family Applications (1)

Application Number Title Priority Date Filing Date
FI903862A FI903862A0 (fi) 1989-08-04 1990-08-03 Radiofrekvensmottagare foer ett nmr instrument.

Country Status (7)

Country Link
US (1) US4992736A (fi)
EP (1) EP0411840B1 (fi)
JP (1) JPH03118046A (fi)
CA (1) CA2010677A1 (fi)
DE (1) DE69022797T2 (fi)
FI (1) FI903862A0 (fi)
IL (1) IL95182A (fi)

Families Citing this family (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170123A (en) * 1989-08-11 1992-12-08 Picker International, Inc. Magnetic resonance imager with digital transmitter/receiver
US5170122A (en) * 1991-07-25 1992-12-08 General Electric NMR imaging using flow compensated SSFP pulse sequences
EP0554584A1 (en) * 1991-11-29 1993-08-11 Koninklijke Philips Electronics N.V. Magnetic resonance device and signal combination device
US5296814A (en) * 1992-04-15 1994-03-22 General Electric Company Tunable signal coupler for a magnetic resonance imaging system
US5309104A (en) * 1992-05-22 1994-05-03 General Electric Company Asymmetric radio frequency coil for magnetic resonance imaging
US5367261A (en) * 1992-07-02 1994-11-22 General Electric Company Shield for a magnetic resonance imaging coil
US5528145A (en) * 1993-07-30 1996-06-18 Hitachi, Ltd. High-speed magnetic resonance imaging method
US5451876A (en) * 1993-10-18 1995-09-19 General Electric Company MRI system with dynamic receiver gain
US5529068A (en) * 1994-06-16 1996-06-25 The Regents Of The University Of California Synchronized digital signal processor for MRI reception
US5594341A (en) * 1994-06-27 1997-01-14 Varian Associates, Inc. Nuclear magnetic resonance receiver, method and system
US5510711A (en) * 1994-08-05 1996-04-23 Picker International, Inc. Digital combination and correction of quadrature magnetic resonance receiver coils
US5974306A (en) * 1994-10-12 1999-10-26 Hewlett-Packard Company Time-share I-Q Mixer system with distribution switch feeding in-phase and quadrature polarity inverters
US5825186A (en) * 1994-10-19 1998-10-20 Mayo Foundation For Medical Education And Research Method for producing stiffness-weighted MR images
US5592085A (en) * 1994-10-19 1997-01-07 Mayo Foundation For Medical Education And Research MR imaging of synchronous spin motion and strain waves
US5754863A (en) * 1995-01-20 1998-05-19 Redcom Laboratories, Inc. System for downloading program code to a microprocessor operative as a slave to a master microprocessor
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
US5937341A (en) 1996-09-13 1999-08-10 University Of Washington Simplified high frequency tuner and tuning method
WO1998038732A1 (en) * 1997-02-27 1998-09-03 National Research Council Quadrature modulation and demodulation circuit for an oscillating waveform
US6043659A (en) * 1997-10-31 2000-03-28 General Electric Company Magnetic resonance imaging system with non-linear preamplification
US6144200A (en) * 1998-02-20 2000-11-07 General Electric Company Acquisition of segmented MRI cardiac data using an EPI pulse sequence
EP0937993A1 (en) * 1998-02-24 1999-08-25 Council of Scientific and Industrial Research Single detection mode receiver to detect magnetic resonance in the time domain
US6046591A (en) * 1998-03-16 2000-04-04 General Electric Company MRI system with fractional decimation of acquired data
US6141578A (en) 1998-04-08 2000-10-31 General Electric Company Method for calculating wave velocities in blood vessels
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US6340883B1 (en) * 1998-09-03 2002-01-22 Sony/Tektronik Corporation Wide band IQ splitting apparatus and calibration method therefor with balanced amplitude and phase between I and Q
JP3739574B2 (ja) * 1998-09-17 2006-01-25 株式会社日立メディコ 核磁気共鳴診断装置
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6195579B1 (en) 1998-12-18 2001-02-27 Wisconsin Alumni Research Foundation Contrast detection and guided reconstruction in contrast-enhanced magnetic resonance angiography
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6281681B1 (en) 1999-01-28 2001-08-28 General Electric Company Magnetic resonance imaging with interleaved Fibonacci spiral scanning
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US6393314B1 (en) 1999-05-06 2002-05-21 General Electric Company RF driven resistive ablation system for use in MRI guided therapy
US6310477B1 (en) 1999-05-10 2001-10-30 General Electric Company MR imaging of lesions and detection of malignant tumors
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US6310479B1 (en) 1999-08-20 2001-10-30 General Electric Company Magnetic resonance projection imaging of dynamic subjects
US6242915B1 (en) * 1999-08-27 2001-06-05 General Electric Company Field-frequency lock system for magnetic resonance system
US6490472B1 (en) 1999-09-03 2002-12-03 The Mcw Research Foundation, Inc. MRI system and method for producing an index indicative of alzheimer's disease
US6252405B1 (en) 1999-11-15 2001-06-26 General Electric Company Temperature compensated NMR magnet and method of operation therefor
DE60005291T2 (de) * 2000-01-24 2004-07-15 Sony International (Europe) Gmbh Struktur und Methode zur Demodulation
US6647134B1 (en) * 2000-03-30 2003-11-11 Mayo Foundation For Medical Education And Research Autocorrection of MR projection images
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US6529000B2 (en) * 2000-12-29 2003-03-04 Ge Medical Systems Global Technology Company, Llc Method and system for processing magnetic resonance signals to remove transient spike noise
US6420873B1 (en) * 2001-02-15 2002-07-16 Netcom, Inc. MRI noise detector and suppressor
JP2002246912A (ja) * 2001-02-20 2002-08-30 Nec Microsystems Ltd デジタル信号処理装置
US6633162B2 (en) 2001-08-22 2003-10-14 Ge Medical Systems Global Technology Company, Llc System and method for filtering frequency encoded imaging signals
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7542793B2 (en) 2002-08-22 2009-06-02 Mayo Foundation For Medical Education And Research MR-guided breast tumor ablation and temperature imaging system
US20050063575A1 (en) * 2003-09-22 2005-03-24 Ge Medical Systems Global Technology, Llc System and method for enabling a software developer to introduce informational attributes for selective inclusion within image headers for medical imaging apparatus applications
JP4021402B2 (ja) * 2003-11-11 2007-12-12 株式会社日立製作所 制御可能な検波部を有する核磁気共鳴装置
DE102004017667B4 (de) * 2004-04-10 2006-11-30 Bruker Biospin Ag Digitale Filter für NMR- und MRI-Anwendungen
US7272375B2 (en) 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method
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
EP2095146A1 (en) 2006-12-19 2009-09-02 Koninklijke Philips Electronics N.V. Mri system with direct digital receiver using resampling
EP2225579A1 (en) 2007-11-27 2010-09-08 Arjae Spectral Enterprises, Inc. Noise reduction by means of spectral parallelism
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
DE102009052197B4 (de) * 2009-11-06 2013-06-13 Siemens Aktiengesellschaft MR-Signal-Übertragung in einer Lokalspulenanordnung
US8324897B2 (en) * 2009-11-11 2012-12-04 Agilent Technologies, Inc. Digital NMR signal processing systems and methods
EP2839305A1 (en) * 2012-04-16 2015-02-25 The Medical College of Wisconsin System and method for direct radio frequency phase control in magnetic resonance imaging
DE102018212087B3 (de) * 2018-07-19 2020-01-23 Siemens Healthcare Gmbh Empfangsvorrichtung für Signale mit Frequenzmultiplex
US11543477B2 (en) * 2019-04-16 2023-01-03 Vadum, Inc. Magnetic resonance detection (MRD) system for and methods of detecting and classifying multiple chemical substances

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423529A (en) * 1966-02-01 1969-01-21 Bell Telephone Labor Inc Automatic phase recovery in suppressed carrier quadrature modulated biternary communication systems
US3443229A (en) * 1966-04-13 1969-05-06 Bell Telephone Labor Inc Quadrature-carrier vestigial-sideband data transmission
US3522537A (en) * 1966-07-25 1970-08-04 Western Union Telegraph Co Vestigial sideband transmission system having two channels in quadrature
JPS6056225B2 (ja) * 1978-08-25 1985-12-09 東亞合成株式会社 亜鉛系基材の表面処理方法
EP0132337A3 (en) * 1983-07-21 1986-12-30 The Regents Of The University Of California Apparatus and method for reducing aliasing in sagittal or coronal nmr imaging
US4740753A (en) * 1986-01-03 1988-04-26 General Electric Company Magnet shimming using information derived from chemical shift imaging
US4839573A (en) * 1986-08-18 1989-06-13 Wise William L Method and apparatus for feedback control loop bandwidth and phase margin regulation
NL8701195A (nl) * 1987-05-19 1988-12-16 Philips Nv M.r.i.-inrichting met digitale zender/ontvanger.
DE3730293A1 (de) * 1987-09-10 1989-03-23 Philips Patentverwaltung Kernresonanz-spektrometer
DE3811066A1 (de) * 1988-03-31 1989-10-12 Philips Patentverwaltung Kernresonanz-spektrometer

Also Published As

Publication number Publication date
EP0411840A2 (en) 1991-02-06
CA2010677A1 (en) 1991-02-04
DE69022797T2 (de) 1996-05-30
US4992736A (en) 1991-02-12
EP0411840A3 (en) 1991-07-03
DE69022797D1 (de) 1995-11-09
IL95182A (en) 1993-02-21
IL95182A0 (en) 1991-06-10
EP0411840B1 (en) 1995-10-04
JPH0440015B2 (fi) 1992-07-01
JPH03118046A (ja) 1991-05-20

Similar Documents

Publication Publication Date Title
FI903862A0 (fi) Radiofrekvensmottagare foer ett nmr instrument.
FI903969A0 (fi) Rf-syntetisator foer nmr-instrument.
DE69020452T2 (de) Frequenzsynthesierer.
DE69022122D1 (de) Frequenzsteuerschaltung für VCO.
DE69032554T2 (de) Frequenzsynthesizer
DE58901095D1 (de) Zeigerinstrument.
DE69016552D1 (de) Gehäuse für Funkgerät.
DE59008177D1 (de) Frequenzsynthesizer.
ES2018130A4 (es) Aparato de refrigeracion apropiado al espacio.
IT9009328A0 (it) Sintetizzatore di frequenza
FI905200A0 (fi) Kondenserade imidazolderivat och foerfarande foer deras framstaellning.
DE68914555T3 (de) Synthesizer für Funkempfänger.
FI893695A0 (fi) Kaernmagnetisk resonans (nmr) -avbildning med ett flertal ytspolar.
DE58901189D1 (de) Zeigerinstrument.
DE69026151D1 (de) Frequenzsynthesizer
FI853150L (fi) Radiofrekvensfaelt foer nmr.
DE69030276D1 (de) Frequenzsynthetisierer
DE69012932D1 (de) Zubereitung für schäumendes Präparat.
DE69025293D1 (de) Kombinier-/Sortiergerät für Radiofrequenzsignale
FI895068A0 (fi) Frekvenssyntetisator.
GB2236643B (en) Radio for transmitter for musical instruments
DE69012426D1 (de) Duplexerstruktur zur Funkausrüstung.
DE69017727D1 (de) Stabantenne für Fahrzeuge.
IT1246699B (it) Sintetizzatore di frequenze
DE69015703T2 (de) Synthetisierer für Empfänger.

Legal Events

Date Code Title Description
FD Application lapsed
MM Patent lapsed

Owner name: GENERAL ELECTRIC COMPANY