ATE67863T1 - Apparat und verfahren zur anfaenglichen erfassung der niedrigeren, meist bedeutsamen, raeumlichen frequenzdaten bei der bilderzeugung mittels magnetischer kernresonanz. - Google Patents

Apparat und verfahren zur anfaenglichen erfassung der niedrigeren, meist bedeutsamen, raeumlichen frequenzdaten bei der bilderzeugung mittels magnetischer kernresonanz.

Info

Publication number
ATE67863T1
ATE67863T1 AT86112618T AT86112618T ATE67863T1 AT E67863 T1 ATE67863 T1 AT E67863T1 AT 86112618 T AT86112618 T AT 86112618T AT 86112618 T AT86112618 T AT 86112618T AT E67863 T1 ATE67863 T1 AT E67863T1
Authority
AT
Austria
Prior art keywords
image
spatial frequency
image data
data acquisition
important
Prior art date
Application number
AT86112618T
Other languages
English (en)
Inventor
Leon Kaufman
Lawrence E Crooks
Douglas A Ortendahl
Original Assignee
Univ California
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 Univ California filed Critical Univ California
Application granted granted Critical
Publication of ATE67863T1 publication Critical patent/ATE67863T1/de

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
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • 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
    • G01R33/4824—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 non-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

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)
  • Apparatus For Radiation Diagnosis (AREA)
AT86112618T 1985-09-30 1986-09-12 Apparat und verfahren zur anfaenglichen erfassung der niedrigeren, meist bedeutsamen, raeumlichen frequenzdaten bei der bilderzeugung mittels magnetischer kernresonanz. ATE67863T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/781,735 US4721912A (en) 1985-09-30 1985-09-30 Apparatus and method for initially capturing most significant low spatial frequency NMR imaging data
EP86112618A EP0217196B1 (de) 1985-09-30 1986-09-12 Apparat und Verfahren zur anfänglichen Erfassung der niedrigeren, meist bedeutsamen, räumlichen Frequenzdaten bei der Bilderzeugung mittels magnetischer Kernresonanz

Publications (1)

Publication Number Publication Date
ATE67863T1 true ATE67863T1 (de) 1991-10-15

Family

ID=25123742

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86112618T ATE67863T1 (de) 1985-09-30 1986-09-12 Apparat und verfahren zur anfaenglichen erfassung der niedrigeren, meist bedeutsamen, raeumlichen frequenzdaten bei der bilderzeugung mittels magnetischer kernresonanz.

Country Status (5)

Country Link
US (1) US4721912A (de)
EP (1) EP0217196B1 (de)
JP (1) JPS62129040A (de)
AT (1) ATE67863T1 (de)
DE (1) DE3681673D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109847A (ja) * 1986-10-29 1988-05-14 株式会社日立メデイコ 核磁気共鳴映像装置
DE3701849A1 (de) * 1987-01-23 1988-08-04 Philips Patentverwaltung Verfahren und vorrichtung fuer die kernspintomographie
US4800494A (en) * 1987-03-23 1989-01-24 Varian Associates, Inc. Method and apparatus for execution of multislice imaging experiments
FR2616936B1 (fr) * 1987-06-19 1989-10-13 Thomson Cgr Procede de prise en compte, dans une image, des mouvements d'un objet
US4830012A (en) * 1987-08-14 1989-05-16 Duke University High speed NMR imaging method and apparatus
JP2960419B2 (ja) * 1988-08-10 1999-10-06 株式会社日立製作所 磁気共鳴イメージング方法
US5073752A (en) * 1990-04-19 1991-12-17 Picker International, Inc. Discrete fourier transform imaging
GB9025344D0 (en) * 1990-11-21 1991-01-02 Marconi Gec Ltd Nuclear magnetic resonance methods and apparatus
DE4142726C2 (de) * 1991-12-21 1993-10-07 Bruker Medizintech Verfahren zur Beobachtung von zeitlichen Veränderungen der Signalintensitäten eines Kernspintomographie-Bildes
IL100530A (en) * 1991-12-26 1996-05-14 Elscint Ltd Evolving image
JPH0661734U (ja) * 1991-12-27 1994-08-30 達明 大西 ガス缶
US6025714A (en) * 1997-04-25 2000-02-15 Toshiba America Mri, Inc. Magnetic resonance imaging (MRI) using fast spin echo (FSE) imaging process
JP2007530123A (ja) * 2004-03-26 2007-11-01 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Ｍｒ装置の非熟練者による制御
US8655348B2 (en) * 2011-02-18 2014-02-18 Pctel, Inc. System and method for acquiring network data
DE102014220328B3 (de) * 2014-10-07 2015-08-27 Sirona Dental Systems Gmbh Erstellung einer MRT-Aufnahme

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
US4297637A (en) * 1978-07-20 1981-10-27 The Regents Of The University Of California Method and apparatus for mapping lines of nuclear density within an object using nuclear magnetic resonance
JPS5838539A (ja) * 1981-08-31 1983-03-07 株式会社東芝 診断用核磁気共鳴装置
JPS59177028A (ja) * 1983-03-29 1984-10-06 株式会社島津製作所 Ｎｍｒ断層像撮影方法
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
US4581581A (en) * 1983-06-30 1986-04-08 General Electric Company Method of projection reconstruction imaging with reduced sensitivity to motion-related artifacts
GB8320653D0 (en) * 1983-08-01 1983-09-01 Eastwood L M Producing images by nmr techniques
JPS6099240A (ja) * 1983-11-04 1985-06-03 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
US4614195A (en) * 1984-12-18 1986-09-30 General Electric Company Method for reduction of motion artifacts in Fourier transform NMR imaging techniques
US4684891A (en) * 1985-07-31 1987-08-04 The Regents Of The University Of California Rapid magnetic resonance imaging using multiple phase encoded spin echoes in each of plural measurement cycles
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

Also Published As

Publication number Publication date
EP0217196B1 (de) 1991-09-25
EP0217196A3 (en) 1989-01-18
US4721912A (en) 1988-01-26
EP0217196A2 (de) 1987-04-08
JPS62129040A (ja) 1987-06-11
JPH0457339B2 (de) 1992-09-11
DE3681673D1 (de) 1991-10-31

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