IL76841A0 - Method for reduction of motion artifacts in fourier transform nmr imaging techniques - Google Patents

Method for reduction of motion artifacts in fourier transform nmr imaging techniques

Info

Publication number
IL76841A0
IL76841A0 IL76841A IL7684185A IL76841A0 IL 76841 A0 IL76841 A0 IL 76841A0 IL 76841 A IL76841 A IL 76841A IL 7684185 A IL7684185 A IL 7684185A IL 76841 A0 IL76841 A0 IL 76841A0
Authority
IL
Israel
Prior art keywords
reduction
fourier transform
imaging techniques
motion artifacts
nmr imaging
Prior art date
Application number
IL76841A
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 IL76841A0 publication Critical patent/IL76841A0/xx

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
    • G01R33/4818—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
    • G01R33/565—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
    • 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
    • G01R33/567—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution gated by physiological signals, i.e. synchronization of acquired MR data with periodical motion of an object of interest, e.g. monitoring or triggering system for cardiac or respiratory gating
    • G01R33/5676—Gating or triggering based on an MR signal, e.g. involving one or more navigator echoes for motion monitoring and correction

Landscapes

  • Physics & Mathematics (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)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Image Processing (AREA)
  • Image Analysis (AREA)
IL76841A 1984-12-18 1985-10-28 Method for reduction of motion artifacts in fourier transform nmr imaging techniques IL76841A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/683,071 US4614195A (en) 1984-12-18 1984-12-18 Method for reduction of motion artifacts in Fourier transform NMR imaging techniques

Publications (1)

Publication Number Publication Date
IL76841A0 true IL76841A0 (en) 1986-02-28

Family

ID=24742451

Family Applications (1)

Application Number Title Priority Date Filing Date
IL76841A IL76841A0 (en) 1984-12-18 1985-10-28 Method for reduction of motion artifacts in fourier transform nmr imaging techniques

Country Status (4)

Country Link
US (1) US4614195A (fr)
EP (1) EP0185194A3 (fr)
JP (1) JPS61155740A (fr)
IL (1) IL76841A0 (fr)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8417290D0 (en) * 1984-07-06 1984-08-08 Picker Int Ltd Nuclear magnetic resonance method
DE3434161A1 (de) * 1984-09-18 1986-03-27 Bruker Medizintechnik Gmbh, 7512 Rheinstetten Verfahren zum messen der magnetischen kernresonanz
DE3445689A1 (de) * 1984-12-14 1986-06-19 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Verfahren und einrichtung zur ortsaufgeloesten untersuchung einer probe mittels magnetischer resonanz von spinmomenten
US4665365A (en) * 1985-01-07 1987-05-12 General Electric Company Method for reversing residual transverse magnetization due to phase-encoding magnetic field gradients
DE3514542A1 (de) * 1985-04-22 1986-10-23 Siemens AG, 1000 Berlin und 8000 München Verfahren und vorrichtung zur zusammensetzung eines mr-bildes aus atemgesteuert aufgenommenen bilddaten
US4779620A (en) * 1985-06-11 1988-10-25 Siemens Aktiengesellschaft Nuclear magnetic resonance tomography apparatus and method
US4724386A (en) * 1985-09-30 1988-02-09 Picker International, Inc. Centrally ordered phase encoding
US4841248A (en) * 1985-08-14 1989-06-20 Picker International, Inc. Transverse field limited localized coil for magnetic resonance imaging
US4663591A (en) * 1985-08-16 1987-05-05 General Electric Company Method for reducing image artifacts due to periodic signal variations in NMR imaging
US4706026A (en) * 1985-08-16 1987-11-10 General Electric Company Method for reducing image artifacts due to periodic signal variations in NMR imaging
US4728890A (en) * 1985-08-16 1988-03-01 Picker International, Inc. Motion artifact suppression technique of magnetic resonance imaging
US4721912A (en) * 1985-09-30 1988-01-26 The Reagents Of The University Of California Apparatus and method for initially capturing most significant low spatial frequency NMR imaging data
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
US4697149A (en) * 1985-11-04 1987-09-29 Wisconsin Alumni Research Foundation NMR flow imaging using a composite excitation field and magnetic field gradient sequence
JPH07108289B2 (ja) * 1986-09-10 1995-11-22 ゼネラル・エレクトリック・カンパニイ Ｎｍｒ作像における人為効果減少装置
US4855910A (en) * 1986-10-22 1989-08-08 North American Philips Corporation Time-clustered cardio-respiratory encoder and method for clustering cardio-respiratory signals
IL82184A (en) * 1987-04-10 1990-07-26 Elscint Ltd Reducing respiratory motion artifacts in nuclear magnetic resonance images
US4887609A (en) * 1987-05-13 1989-12-19 The Methodist Hospital System Apparatus and method for filtering electrocardiograph signals
US4751462A (en) * 1987-05-26 1988-06-14 General Electric Company Method for acquiring NMR data which is subject to periodic variations
US4761613A (en) * 1987-08-12 1988-08-02 Picker International, Inc. Monitored echo gating for the reduction of motion artifacts
JPH064066B2 (ja) * 1987-10-15 1994-01-19 株式会社東芝 磁気共鳴イメージング装置
US5035244A (en) * 1988-02-23 1991-07-30 Elscint Ltd. Motion artifact minimization
JPH02144038A (ja) * 1988-11-28 1990-06-01 Shimadzu Corp Ｍｒイメージング法
US4959611A (en) * 1989-06-29 1990-09-25 Picker International, Inc. Out-of-slice artifact reduction technique for magnetic resonance imagers
EP0415683A3 (en) * 1989-08-31 1991-07-31 General Electric Company Nmr system
US5251128A (en) * 1990-11-19 1993-10-05 General Electric Company Motion artifact reduction in projection imaging
JP2924927B2 (ja) * 1991-01-17 1999-07-26 ローム 株式会社 イメージセンサ
DE4305878C1 (de) * 1993-02-25 1994-09-08 Max Planck Gesellschaft Bildgebendes MR-Verfahren mit stochastischer Anregung
JP4133348B2 (ja) * 2003-01-07 2008-08-13 株式会社日立メディコ 核磁気共鳴を用いた検査装置
CN103018692B (zh) * 2011-09-27 2016-10-26 深圳迈瑞生物医疗电子股份有限公司 信号区域识别方法、mri脉冲序列调整方法及mri成像系统
CN109917315B (zh) * 2019-04-30 2021-09-28 上海联影医疗科技股份有限公司 磁共振成像扫描方法、装置、计算机设备和存储介质

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431968A (en) * 1982-04-05 1984-02-14 General Electric Company Method of three-dimensional NMR imaging using selective excitation
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
US4506223A (en) * 1982-11-22 1985-03-19 General Electric Company Method for performing two-dimensional and three-dimensional chemical shift imaging
GB8417290D0 (en) * 1984-07-06 1984-08-08 Picker Int Ltd Nuclear magnetic resonance method
NL8403627A (nl) * 1984-11-29 1986-06-16 Philips Nv Werkwijze en inrichting voor het bepalen van een kernmagnetisatieverdeling in een deel van een lichaam.

Also Published As

Publication number Publication date
US4614195A (en) 1986-09-30
JPS61155740A (ja) 1986-07-15
EP0185194A3 (fr) 1988-06-08
EP0185194A2 (fr) 1986-06-25

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