FI832376A0 - Eliminering av induktionssoenderfall vid kmr-avbildning med hjaelp av fasvaexling - Google Patents

Eliminering av induktionssoenderfall vid kmr-avbildning med hjaelp av fasvaexling

Info

Publication number
FI832376A0
FI832376A0 FI832376A FI832376A FI832376A0 FI 832376 A0 FI832376 A0 FI 832376A0 FI 832376 A FI832376 A FI 832376A FI 832376 A FI832376 A FI 832376A FI 832376 A0 FI832376 A0 FI 832376A0
Authority
FI
Finland
Prior art keywords
induktionssoenderfall
fasvaexling
avbildning
eliminering
kmr
Prior art date
Application number
FI832376A
Other languages
English (en)
Other versions
FI78987B (fi
FI832376L (fi
FI78987C (fi
Inventor
William Alan Edelstein
Paul Arthur Bottomley
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 FI832376A0 publication Critical patent/FI832376A0/fi
Publication of FI832376L publication Critical patent/FI832376L/fi
Publication of FI78987B publication Critical patent/FI78987B/fi
Application granted granted Critical
Publication of FI78987C publication Critical patent/FI78987C/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
    • G01R33/44—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (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)
  • Magnetic Resonance Imaging Apparatus (AREA)
FI832376A 1982-07-01 1983-06-29 Eliminering av induktionsdaempning vid nmr-avbildning genom fasvaexling. FI78987C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39407382 1982-07-01
US06/394,073 US4443760A (en) 1982-07-01 1982-07-01 Use of phase alternated RF pulses to eliminate effects of spurious free induction decay caused by imperfect 180 degree RF pulses in NMR imaging

Publications (4)

Publication Number Publication Date
FI832376A0 true FI832376A0 (fi) 1983-06-29
FI832376L FI832376L (fi) 1984-01-02
FI78987B FI78987B (fi) 1989-06-30
FI78987C FI78987C (fi) 1989-10-10

Family

ID=23557442

Family Applications (1)

Application Number Title Priority Date Filing Date
FI832376A FI78987C (fi) 1982-07-01 1983-06-29 Eliminering av induktionsdaempning vid nmr-avbildning genom fasvaexling.

Country Status (6)

Country Link
US (1) US4443760A (fi)
EP (1) EP0098479B1 (fi)
JP (1) JPS5963551A (fi)
DE (1) DE3381809D1 (fi)
FI (1) FI78987C (fi)
IL (1) IL69141A (fi)

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742303A (en) * 1982-11-22 1988-05-03 Bendall Max R Depth and refocusing pulses for use with inhomogeneous radiofrequency coils in nuclear magnetic resonance spectroscopy
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
USRE32701E (en) * 1983-01-04 1988-06-21 Wisconsin Alumni Research Foundation NMR scanner with motion zeugmatography
US4579121A (en) * 1983-02-18 1986-04-01 Albert Macovski High speed NMR imaging system
US4520316A (en) * 1983-04-25 1985-05-28 The University Of British Columbia NMR imaging technique
US4549139A (en) * 1983-06-03 1985-10-22 General Electric Company Method of accurate and rapid NMR imaging of computed T1 and spin density
US4549140A (en) * 1983-06-03 1985-10-22 General Electric Company Method utilizing combined, interleaved pulse sequences for reducing motion artifacts in computed T1,T2 and M0 NMR imaging
GB8316759D0 (en) * 1983-06-20 1983-07-20 Picker Int Ltd Nuclear magnetic resonance
FI833807A (fi) * 1983-06-23 1984-12-24 Instrumentarium Oy Foerfarande foer utredning av aemnets eller magnetfaeltets egenskaper.
DE3340384A1 (de) * 1983-11-08 1985-05-15 Siemens AG, 1000 Berlin und 8000 München Hochfrequenz-einrichtung einer kernspinresonanz-apparatur mit einer oberflaechenspule
DE3340337A1 (de) * 1983-11-08 1985-05-15 Siemens AG, 1000 Berlin und 8000 München Hochfrequenz-einrichtung einer kernspinresonanz-apparatur
DE3340523A1 (de) * 1983-11-09 1985-05-15 Siemens AG, 1000 Berlin und 8000 München Kernspin-tomographiegeraet
US4593247A (en) * 1983-11-25 1986-06-03 General Electric Company Method of NMR imaging with off-center zoom scan
US4613949A (en) * 1984-02-17 1986-09-23 General Electric Company Composite pulses for time reversal in NMR imaging
NL8400699A (nl) * 1984-03-05 1985-10-01 Philips Nv Werkwijze voor het verminderen van artefacten bij het met behulp van fourier-zeugmatografie bepalen van beelden.
GB8417290D0 (en) * 1984-07-06 1984-08-08 Picker Int Ltd Nuclear magnetic resonance method
US4594566A (en) * 1984-08-30 1986-06-10 Advanced Nmr Systems, Inc. High frequency rf coil for NMR device
US4672319A (en) * 1984-09-19 1987-06-09 Stanford University Multiple pulse excitation in NMR imaging
US4616183A (en) * 1984-10-22 1986-10-07 General Electric Company Method for reducing baseline error components in NMR signals
US4567893A (en) * 1984-11-21 1986-02-04 General Electric Company Method of eliminating breathing artifacts in NMR imaging
US4612504A (en) * 1984-11-21 1986-09-16 General Electric Company Method for removing the effects of baseline error components in NMR imaging applications
US4614195A (en) * 1984-12-18 1986-09-30 General Electric Company Method for reduction of motion artifacts in Fourier transform NMR imaging techniques
JPS61144552A (ja) * 1984-12-18 1986-07-02 Yokogawa Electric Corp 核磁気共鳴デ−タの処理方法
JPS61168342A (ja) * 1985-01-21 1986-07-30 横河電機株式会社 Ｎｍｒ断層撮像装置のア−テイフアクト防止方法
JPS61191949A (ja) * 1985-02-19 1986-08-26 Toshiba Corp 磁気共鳴イメ−ジング装置
US4695800A (en) * 1985-06-06 1987-09-22 Technicare Corporation Non harmonic NMR spin echo imaging
US4689564A (en) * 1985-06-10 1987-08-25 General Electric Company Digital interface subsystem for a magnetic resonance imaging and spectroscopy system
US4689563A (en) * 1985-06-10 1987-08-25 General Electric Company High-field nuclear magnetic resonance imaging/spectroscopy system
IL79686A (en) * 1985-08-16 1990-04-29 Univ Leland Stanford Junior Moving material projection imaging system using nuclear magnetic resonance
JPS62106755A (ja) * 1985-11-02 1987-05-18 株式会社東芝 磁気共鳴イメ−ジング装置
US4746863A (en) * 1985-11-07 1988-05-24 The Regents Of The University Of California Contiguous slices in multi-slice MRI
IL78240A (en) * 1986-03-24 1989-09-10 Elscint Ltd Spatially localized spectroscopy
NL8601002A (nl) * 1986-04-21 1987-11-16 Philips Nv Werkwijze en inrichting voor het bepalen van een kernmagnetisatieverdeling in deel van een lichaam.
US4714884A (en) * 1986-06-13 1987-12-22 General Electric Company Method of eliminating effects of spurious NMR signals caused by imperfect 180 degree RF pulses
US4718424A (en) * 1986-08-07 1988-01-12 Stanford University NMR imaging of blood flow by moment variation of magnetic gradients
US5055787A (en) * 1986-08-27 1991-10-08 Schlumberger Technology Corporation Borehole measurement of NMR characteristics of earth formations
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
US4796635A (en) * 1987-02-11 1989-01-10 General Electric Company Multiple-echo, multiple-view NMR angiography
US5022398A (en) * 1987-02-11 1991-06-11 General Electric Company Multiple-echo NMR angiography for enhancement of signal-to noise ratio
US5038784A (en) * 1987-02-11 1991-08-13 General Electric Company Multiple-echo angiography with enhanced signal-to-noise ratio
US5025788A (en) * 1987-02-11 1991-06-25 General Electric Company Method of acquiring NMR angiograms in selected flow component directions
US4761614A (en) * 1987-04-27 1988-08-02 Phospho-Energetics, Inc. Device and method for automatic shimming of NMR instrument
US4795978A (en) * 1987-07-29 1989-01-03 Flscint Ltd. Prevention of steady state transverse magnetization in fast imaging sequences
JPH0295346A (ja) * 1988-09-30 1990-04-06 Shimadzu Corp Ｍｒ装置
DE4004185C2 (de) * 1989-02-24 1997-08-07 Siemens Ag Verfahren zur Gewinnung von flußkompensierten, T¶2¶- gewichteten Bildern mittels der kernmagnetischen Resonanz
JP3183915B2 (ja) * 1991-09-03 2001-07-09 株式会社東芝 磁気共鳴イメージング装置
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
US5317263A (en) * 1993-03-17 1994-05-31 Bruker Instruments, Inc. Method for creating a z-rotation using radial pulses in NMR experiments involving coherence transformations
US6392409B1 (en) 2000-01-14 2002-05-21 Baker Hughes Incorporated Determination of T1 relaxation time from multiple wait time NMR logs acquired in the same or different logging passes
AU4836396A (en) 1995-02-24 1996-09-11 British Technology Group Limited Method of and apparatus for nuclear quadrupole resonance testing a sample, and pulse sequence for exciting nuclear quadrupole resonance
US5541513A (en) * 1995-04-14 1996-07-30 General Electric Company MRI center point artifact elimination using realtime receiver phase control
GB9511101D0 (en) * 1995-06-01 1995-07-26 British Tech Group Magnetic coil
US6049206A (en) * 1996-08-19 2000-04-11 National Research Council Of Canada Compensation for inhomogeneity of the field generated by the RF coil in a nuclear magnetic resonance system
US6043657A (en) * 1997-09-18 2000-03-28 General Electric Company Calibration of RF pulses for MRI
US6166543A (en) * 1997-09-25 2000-12-26 Schlumberger Technology Corporation Method and apparatus for measuring nuclear magnetic resonance
US6025718A (en) * 1998-04-07 2000-02-15 Hushek; Stephen G. RF power calibration for an MRI system using local coils
US6111411A (en) * 1998-04-07 2000-08-29 Generalelectric Company RF power calibration for an MRI system using multiple axis projections
GB2374672A (en) * 2001-04-20 2002-10-23 Marconi Medical Systems Uk Ltd Magnetic Resonance Imaging
JP2009160342A (ja) * 2008-01-10 2009-07-23 Ge Medical Systems Global Technology Co Llc 磁気共鳴イメージング装置、ｒｆパルスの送信方法およびプログラム
US10088594B2 (en) 2014-10-16 2018-10-02 Schlumberger Technology Corporation Methods and apparatuses for echo processing of nuclear magnetic resonance (NMR) data

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126743C3 (de) * 1971-05-28 1974-05-16 Spectrospin Ag, Faellanden (Schweiz) Verfahren zur Aufnahme von Spin- ' resonanzspektren
GB1496886A (en) * 1974-04-08 1978-01-05 Nat Res Dev Nuclear magnetic resonance apparatus
US3968424A (en) * 1974-08-01 1976-07-06 Varian Associates Fourier transform NMR spectroscopy employing a phase modulated rf carrier
GB1601970A (en) * 1978-05-31 1981-11-04 Nat Res Dev Methods of deriving image information from objects
US4318043A (en) * 1978-07-20 1982-03-02 The Regents Of The University Of California Method and apparatus for rapid NMR imaging of nuclear densities within an object
US4339716A (en) * 1979-05-23 1982-07-13 Picker International Limited Nuclear magnetic resonance systems
US4384255A (en) * 1979-08-10 1983-05-17 Picker International Limited Nuclear magnetic resonance systems
DE2936465A1 (de) * 1979-09-10 1981-06-11 Siemens AG, 1000 Berlin und 8000 München Verfahren zur erstellung von kernresonanzbildern

Also Published As

Publication number Publication date
US4443760A (en) 1984-04-17
FI78987B (fi) 1989-06-30
IL69141A0 (en) 1983-11-30
DE3381809D1 (de) 1990-09-20
IL69141A (en) 1988-02-29
EP0098479A2 (en) 1984-01-18
JPS5963551A (ja) 1984-04-11
FI832376L (fi) 1984-01-02
EP0098479B1 (en) 1990-08-16
FI78987C (fi) 1989-10-10
JPH028664B2 (fi) 1990-02-26
EP0098479A3 (en) 1986-06-11

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Owner name: GENERAL ELECTRIC COMPANY