DE3674913D1 - Kernspintomographie von hochgeschwindigkeitsstroemungen. - Google Patents

Kernspintomographie von hochgeschwindigkeitsstroemungen.

Info

Publication number
DE3674913D1
DE3674913D1 DE8686904854T DE3674913T DE3674913D1 DE 3674913 D1 DE3674913 D1 DE 3674913D1 DE 8686904854 T DE8686904854 T DE 8686904854T DE 3674913 T DE3674913 T DE 3674913T DE 3674913 D1 DE3674913 D1 DE 3674913D1
Authority
DE
Germany
Prior art keywords
speed flows
spin tomography
core spin
core
tomography
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
Application number
DE8686904854T
Other languages
English (en)
Inventor
Mathuradas Parlane Pattany
Leslie Cameron Avenue Nayler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Nuclear Medicine Inc
Original Assignee
Picker International Inc
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 Picker International Inc filed Critical Picker International Inc
Application granted granted Critical
Publication of DE3674913D1 publication Critical patent/DE3674913D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/716—Measuring the time taken to traverse a fixed distance using electron paramagnetic resonance [EPR] or nuclear magnetic resonance [NMR]
    • 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
    • G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
    • G01R33/482—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a Cartesian trajectory
    • 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
    • G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
    • G01R33/56308—Characterization of motion or flow; Dynamic imaging
    • 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
    • G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
    • G01R33/56308—Characterization of motion or flow; Dynamic imaging
    • G01R33/56316—Characterization of motion or flow; Dynamic imaging involving phase contrast techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Health & Medical Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Vascular Medicine (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE8686904854T 1985-08-16 1986-07-30 Kernspintomographie von hochgeschwindigkeitsstroemungen. Expired - Lifetime DE3674913D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/766,757 US4683431A (en) 1985-08-16 1985-08-16 Magnetic resonance imaging of high velocity flows
PCT/GB1986/000450 WO1987001200A1 (en) 1985-08-16 1986-07-30 Magnetic resonance imaging of high velocity flows

Publications (1)

Publication Number Publication Date
DE3674913D1 true DE3674913D1 (de) 1990-11-15

Family

ID=25077442

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686904854T Expired - Lifetime DE3674913D1 (de) 1985-08-16 1986-07-30 Kernspintomographie von hochgeschwindigkeitsstroemungen.

Country Status (5)

Country Link
US (1) US4683431A (de)
EP (1) EP0233906B1 (de)
JP (2) JPH07100059B2 (de)
DE (1) DE3674913D1 (de)
WO (1) WO1987001200A1 (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3666632D1 (en) * 1985-06-27 1989-11-30 Gen Electric Cgr Nuclear magnetic resonance imaging method
DE3686985T2 (de) * 1985-07-10 1993-04-29 Hitachi Ltd Verfahren zur bilderzeugung mittels magnetischer kernresonanz.
USRE34495E (en) * 1985-07-10 1994-01-04 Hitachi, Ltd. NMR imaging method
US4780674A (en) * 1986-01-29 1988-10-25 Thomson-Cgr Process for imaging by nuclear magnetic resonance
JPH0814584B2 (ja) * 1986-12-22 1996-02-14 株式会社東芝 磁気共鳴イメ−ジング装置における流速測定方法
JPS63186639A (ja) * 1987-01-30 1988-08-02 株式会社日立製作所 血流イメ−ジング方式
FR2615286B1 (fr) * 1987-05-12 1989-10-13 Thomson Cgr Procede de mesure des flux dans une experimentation de resonance magnetique nucleaire
US5124649A (en) * 1987-06-02 1992-06-23 Picker International, Inc. Magnetic resonance imaging with selective phase encoding averaging
NL8701642A (nl) * 1987-07-13 1989-02-01 Philips Nv Werkwijze en inrichting voor het uitvoeren van een fasecorrectie bij mr angiografie.
IL86231A (en) * 1988-04-29 1991-07-18 Elscint Ltd Correction for eddy current caused phase degradation
US4881032A (en) * 1988-10-21 1989-11-14 General Electric Company Method of, and apparatus for, NMR spectroscopic metabolite imaging and quantification
US5115812A (en) * 1988-11-30 1992-05-26 Hitachi, Ltd. Magnetic resonance imaging method for moving object
US5034694A (en) * 1989-11-22 1991-07-23 Picker International, Inc. Minimum basis set MR angiography
US5101156A (en) * 1990-08-09 1992-03-31 General Electric Rapid flow measurement using an nmr imaging system
US5093620A (en) * 1990-08-09 1992-03-03 General Electric Encoding for nmr phase contrast flow measurement
US5204627A (en) * 1991-03-14 1993-04-20 Wisconsin Alumni Research Foundation Adaptive NMR angiographic reprojection method
US5225779A (en) * 1991-08-28 1993-07-06 Ihc Hospitals, Inc. Hybrid magnetic aresonance spatial and velocity imaging
US5329925A (en) * 1991-11-14 1994-07-19 Picker International, Inc. Reduced scan time cardiac gated magnetic resonance cine and flow imaging
US5348011A (en) * 1991-11-14 1994-09-20 Picker International, Inc. Shared excitation phase encode grouping for improved throughput cardiac gated MRI cine imaging
JP3399981B2 (ja) * 1992-06-30 2003-04-28 株式会社東芝 磁気共鳴イメージング装置
US5281916A (en) * 1992-07-29 1994-01-25 General Electric Company NMR angiography using fast spin echo pulse sequences
US5277192A (en) * 1992-09-18 1994-01-11 General Electric Company Imaging of turbulence with magnetic resonance
US5408180A (en) * 1993-08-13 1995-04-18 Wisconsin Alumni Research Foundation Measurement of flow using a complex difference method of magnetic resonance imaging
JP3028220B2 (ja) * 1998-05-21 2000-04-04 ジーイー横河メディカルシステム株式会社 Ｍｒｉ装置
US6674601B1 (en) 1999-10-12 2004-01-06 Seagate Technology Llc Method and apparatus for electronically shifting mechanical resonance of an actuator system of a disc drive
DE10015265C2 (de) * 2000-03-28 2002-04-11 Siemens Ag Spektroskopisches Bildgebungsverfahren für ein Magnetresonanzgerät
US6587708B2 (en) * 2000-12-29 2003-07-01 Ge Medical Systems Global Technology, Llc Method for coherent steady-state imaging of constant-velocity flowing fluids
US6552542B1 (en) 2001-09-28 2003-04-22 The Board Of Trustees Of The Leland Stanford Junior University Oscillating dual-equilibrium steady state angiography using magnetic resonance imaging
US6957097B2 (en) * 2002-04-17 2005-10-18 The Board Of Trustees Of The Leland Stanford Junior University Rapid measurement of time-averaged blood flow using ungated spiral phase-contrast MRI
DE102005008753B4 (de) * 2005-02-25 2007-09-27 Siemens Ag Verfahren zur Darstellung von Fluss in einem Magnetresonanzbild
WO2010113083A1 (en) * 2009-04-01 2010-10-07 Koninklijke Philips Electronics N.V. Dual contrast mr imaging using fluid-attenuation inversion recovery ( flair)
DE102010061970B4 (de) * 2010-11-25 2013-05-08 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Bestimmung einer MR-systembedingten Phaseninformation
US10605883B2 (en) * 2016-04-22 2020-03-31 Sunnybrook Research Institute System and method for producing distortion free magnetic resonance images using dual-echo echo-planar imaging
US10670679B2 (en) * 2016-07-01 2020-06-02 Canon Medical Systems Corporation Magnetic resonance imaging apparatus and image processing apparatus

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528985A (en) * 1981-12-21 1985-07-16 Albert Macovski Blood vessel imaging system using nuclear magnetic resonance
US4431968A (en) * 1982-04-05 1984-02-14 General Electric Company Method of three-dimensional NMR imaging using selective excitation
EP0103372A3 (de) * 1982-08-11 1986-05-07 Picker International Limited Kernmagnetische Resonanzmethode und -Vorrichtung
GB2127155B (en) * 1982-09-17 1987-04-08 Picker Int Ltd Flow determination by nuclear magnetic resonance
US4516075A (en) * 1983-01-04 1985-05-07 Wisconsin Alumni Research Foundation NMR scanner with motion zeugmatography
US4551680A (en) * 1983-04-21 1985-11-05 Albert Macovski Selective region NMR projection imaging system
US4516582A (en) * 1983-05-02 1985-05-14 General Electric Company NMR blood flow imaging
US4532473A (en) * 1983-05-18 1985-07-30 General Electric Company NMR method for measuring and imaging fluid flow
US4574239A (en) * 1983-07-19 1986-03-04 The Regents Of The University Of California Method for flow measurement using nuclear magnetic resonance
US4602641A (en) * 1983-08-15 1986-07-29 The Regents Of The University Of California Method and apparatus for NMR detection and imaging of flowing fluid nuclei
US4649346A (en) * 1983-11-09 1987-03-10 Technicare Corporation Complex quotient nuclear magnetic resonance imaging
US4616180A (en) * 1983-11-14 1986-10-07 Technicare Corporation Nuclear magnetic resonance imaging with reduced sensitivity to motional effects
US4595879A (en) * 1983-11-14 1986-06-17 Technicare Corporation Nuclear magnetic resonance flow imaging
US4570119A (en) * 1983-11-15 1986-02-11 General Electric Company Method for visualization of in-plane fluid flow by proton NMR imaging

Also Published As

Publication number Publication date
EP0233906B1 (de) 1990-10-10
EP0233906A1 (de) 1987-09-02
US4683431A (en) 1987-07-28
JPS63501339A (ja) 1988-05-26
JPS63501342A (ja) 1988-05-26
JPH07100059B2 (ja) 1995-11-01
WO1987001200A1 (en) 1987-02-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee
8327 Change in the person/name/address of the patent owner

Owner name: PHILIPS MEDICAL SYSTEMS (CLEVELAND), INC., CLEVELA