IL74341A0 - Composite pulses for time reversal in nmr imaging - Google Patents

Composite pulses for time reversal in nmr imaging

Info

Publication number
IL74341A0
IL74341A0 IL74341A IL7434185A IL74341A0 IL 74341 A0 IL74341 A0 IL 74341A0 IL 74341 A IL74341 A IL 74341A IL 7434185 A IL7434185 A IL 7434185A IL 74341 A0 IL74341 A0 IL 74341A0
Authority
IL
Israel
Prior art keywords
time reversal
nmr imaging
composite pulses
pulses
composite
Prior art date
Application number
IL74341A
Other languages
English (en)
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 IL74341A0 publication Critical patent/IL74341A0/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
    • G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
    • 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]
    • G01R33/446—Multifrequency selective RF pulses, e.g. multinuclear acquisition mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • 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
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0

Landscapes

  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
IL74341A 1984-02-17 1985-02-13 Composite pulses for time reversal in nmr imaging IL74341A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/581,150 US4613949A (en) 1984-02-17 1984-02-17 Composite pulses for time reversal in NMR imaging

Publications (1)

Publication Number Publication Date
IL74341A0 true IL74341A0 (en) 1985-05-31

Family

ID=24324088

Family Applications (1)

Application Number Title Priority Date Filing Date
IL74341A IL74341A0 (en) 1984-02-17 1985-02-13 Composite pulses for time reversal in nmr imaging

Country Status (7)

Country Link
US (1) US4613949A (ko)
EP (1) EP0152879B1 (ko)
JP (1) JPS60242352A (ko)
KR (1) KR880001531B1 (ko)
DE (1) DE3578456D1 (ko)
FI (1) FI850361L (ko)
IL (1) IL74341A0 (ko)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60141804U (ja) * 1984-02-29 1985-09-19 横河メディカルシステム株式会社 計算機トモグラフイ装置の表示装置
US4672319A (en) * 1984-09-19 1987-06-09 Stanford University Multiple pulse excitation in NMR imaging
US4695800A (en) * 1985-06-06 1987-09-22 Technicare Corporation Non harmonic NMR spin echo imaging
JPH0785738B2 (ja) * 1985-06-29 1995-09-20 株式会社東芝 磁気共鳴映像装置
NL8502223A (nl) * 1985-08-12 1987-03-02 Philips Nv Werkwijze voor het selektief exciteren van een volume in een objekt.
DE3543123A1 (de) * 1985-12-06 1987-06-11 Spectrospin Ag Verfahren zur aufnahme von kernresonanzspektren
DE3543854A1 (de) * 1985-12-12 1987-06-19 Philips Patentverwaltung Kernspintomographieverfahren und anordnung zur durchfuehrung des verfahrens
JPS62176442A (ja) * 1986-01-29 1987-08-03 横河メディカルシステム株式会社 核磁気共鳴断層撮影装置用スキヤンコントロ−ラ
JPS62176441A (ja) * 1986-01-29 1987-08-03 横河メディカルシステム株式会社 核磁気共鳴断層撮影装置用スキヤンコントロ−ラ
FR2598509B1 (fr) * 1986-05-06 1989-03-31 Thomson Cgr Procede de calibration de l'amplitude de l'excitation radiofrequence d'un appareil d'imagerie par resonance magnetique nucleaire
GB8621061D0 (en) * 1986-09-01 1986-10-08 Hewlett Packard Ltd User interface simulation
GB8621322D0 (en) * 1986-09-04 1986-10-15 Mcdonald P J Imaging solids
FR2607253B1 (fr) * 1986-11-21 1989-06-09 Thomson Cgr Procede de representation des parties en mouvement dans un corps par experimentation de resonance magnetique nucleaire
JPS63189134A (ja) * 1987-02-02 1988-08-04 株式会社東芝 磁気共鳴イメ−ジング装置
US4760336A (en) * 1987-02-27 1988-07-26 Stanford University Variable rate magnetic resonance selective excitation for reducing rf power and specific absorption rate
US4914392A (en) * 1987-03-27 1990-04-03 Reagents Of The University Of Minnesota Amplitude and frequency/phase modulated pulses to achieve plane rotations of nuclear spin magnetization vectors with inhomogeneous B1
US4988947A (en) * 1987-03-27 1991-01-29 Regents Of The University Of Minnesota Amplitude and frequency/phase modulated pulses to achieve plane rotations of nuclear spin magnetization vectors with inhomogeneous B1
IL84152A (en) * 1987-10-12 1991-06-10 Elscint Ltd Magnetic resonance spectroscopic measurements of restricted volumes
NL8702700A (nl) * 1987-11-12 1989-06-01 Philips Nv Werkwijze en inrichting voor automatische fasecorrectie van complexe nmr spectra.
NL8703127A (nl) * 1987-12-24 1989-07-17 Philips Nv Werkwijze en inrichting voor het genereren van vervlochten multiple-slice en multiple-echo pulssequenties voor mri.
US5019784A (en) * 1989-08-11 1991-05-28 Regents Of The University Of Minnesota Time symmetric pulse to uniformly rotate magnetization vectors by an arbitrary angle in the presence of large B1 inhomogeneities and resonance offsets
JPH0399632A (ja) * 1989-09-13 1991-04-24 Hitachi Ltd 磁気共鳴イメージング装置
US5125407A (en) * 1990-02-23 1992-06-30 Baylor Research Foundation Method for magnetic resonance imaging of an object
US5066914A (en) * 1990-03-26 1991-11-19 General Electric Company Gradient amplifier system with flexible amplifier allocation
JPH05184555A (ja) * 1991-03-20 1993-07-27 Hitachi Ltd 磁気共鳴イメージング方法及び装置
US6975114B1 (en) * 2002-11-20 2005-12-13 Nova Medical, Inc. Methods for transmit excitation in magnetic resonance imaging using a transmit pulse with time varying spatial characteristics
TW200519925A (en) * 2003-08-05 2005-06-16 Matsushita Electric Ind Co Ltd Optical disc and the manufacturing method thereof
EP3494399A4 (en) * 2016-08-02 2020-01-22 The University of Melbourne METHOD AND SYSTEM FOR MAGNETIC RESONANCE IMAGING
AU2018214017A1 (en) * 2018-08-07 2020-02-27 The University Of Melbourne Quantum Spin Magnetometer

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968424A (en) * 1974-08-01 1976-07-06 Varian Associates Fourier transform NMR spectroscopy employing a phase modulated rf carrier
US4065714A (en) * 1976-06-21 1977-12-27 Varian Associates, Inc. Pulsed RF excited spectrometer having improved pulse width control
US4471305A (en) * 1978-07-20 1984-09-11 The Regents Of The University Of Calif. Method and apparatus for rapid NMR imaging of nuclear parameters with an object
US4238735A (en) * 1979-02-21 1980-12-09 Varian Associates, Inc. Indirect detection of nuclear spins of low gyromagentic ratio coupled to spins of high gyromagnetic ratio
DE3044396A1 (de) * 1980-11-25 1982-06-24 Siemens AG, 1000 Berlin und 8000 München Verfahren und vorrichtung zur erstellung von kernresonanzbildern
US4443761A (en) * 1981-06-16 1984-04-17 National Research Development Corporation NMR Spectroscopy
DE3135335A1 (de) * 1981-09-07 1983-08-18 Siemens AG, 1000 Berlin und 8000 München Kernspin-tomographie-verfahren
JPS5848839A (ja) * 1981-09-18 1983-03-22 Hitachi Ltd 核磁気共鳴を用いた検査装置
US4438400A (en) * 1982-01-18 1984-03-20 Varian Associates, Inc. Method for suppression of acoustic ringing in NMR measurements
JPS58142251A (ja) * 1982-02-19 1983-08-24 Jeol Ltd 核磁気共鳴測定方法
DE3209263A1 (de) * 1982-03-13 1983-09-22 Bruker Medizintechnik Gmbh, 7512 Rheinstetten Verfahren zum messen der magnetischen kernresonanz
US4470014A (en) * 1982-03-26 1984-09-04 National Research Development Corporation NMR Spectroscopy
US4443760A (en) * 1982-07-01 1984-04-17 General Electric Company Use of phase alternated RF pulses to eliminate effects of spurious free induction decay caused by imperfect 180 degree RF pulses in NMR imaging
US4543529A (en) * 1983-01-04 1985-09-24 Nmr Imaging, Inc. Method of tuning an NMR apparatus
JPS6082841A (ja) * 1983-10-12 1985-05-11 Yokogawa Hokushin Electric Corp 核磁気共鳴による検査装置

Also Published As

Publication number Publication date
EP0152879B1 (en) 1990-06-27
JPH0349255B2 (ko) 1991-07-29
FI850361A0 (fi) 1985-01-28
EP0152879A2 (en) 1985-08-28
KR850007120A (ko) 1985-10-30
FI850361L (fi) 1985-08-18
KR880001531B1 (ko) 1988-08-19
EP0152879A3 (en) 1987-04-08
US4613949A (en) 1986-09-23
DE3578456D1 (de) 1990-08-02
JPS60242352A (ja) 1985-12-02

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