DE3679719D1 - Nichtharmonische nmr-spin-echo-bildgebung. - Google Patents

Nichtharmonische nmr-spin-echo-bildgebung.

Info

Publication number
DE3679719D1
DE3679719D1 DE8686304287T DE3679719T DE3679719D1 DE 3679719 D1 DE3679719 D1 DE 3679719D1 DE 8686304287 T DE8686304287 T DE 8686304287T DE 3679719 T DE3679719 T DE 3679719T DE 3679719 D1 DE3679719 D1 DE 3679719D1
Authority
DE
Germany
Prior art keywords
radio frequency
frequency signal
subject
applying
predetermined time
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 - Fee Related
Application number
DE8686304287T
Other languages
English (en)
Inventor
David Moses Kramer
Lawrence Matthew Strenk
Russell Allen Compton
James Bryce Murdoch
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.)
Siemens AG
Original Assignee
Technicare Corp
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 Technicare Corp filed Critical Technicare Corp
Application granted granted Critical
Publication of DE3679719D1 publication Critical patent/DE3679719D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01R33/4818—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
    • G01R33/56554—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by acquiring plural, differently encoded echo signals after one RF excitation, e.g. correction for readout gradients of alternating polarity in EPI

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)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE8686304287T 1985-06-06 1986-06-05 Nichtharmonische nmr-spin-echo-bildgebung. Expired - Fee Related DE3679719D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/742,161 US4695800A (en) 1985-06-06 1985-06-06 Non harmonic NMR spin echo imaging

Publications (1)

Publication Number Publication Date
DE3679719D1 true DE3679719D1 (de) 1991-07-18

Family

ID=24983723

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686304287T Expired - Fee Related DE3679719D1 (de) 1985-06-06 1986-06-05 Nichtharmonische nmr-spin-echo-bildgebung.

Country Status (5)

Country Link
US (1) US4695800A (de)
EP (1) EP0204569B1 (de)
JP (1) JP2641426B2 (de)
AT (1) ATE64472T1 (de)
DE (1) DE3679719D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700266A (nl) * 1987-02-04 1988-09-01 Philips Nv Werkwijze en inrichting voor het onderdrukken van coherente storingen bij magnetische resonantiesignalen.
JP2735191B2 (ja) * 1987-07-22 1998-04-02 株式会社東芝 磁気共鳴イメージング装置
US5144236A (en) * 1990-08-17 1992-09-01 Strenk Scientific Consultants, Inc. Method and apparatus for r.f. tomography
DE4319031C2 (de) * 1992-06-12 1996-05-30 Rieter Ingolstadt Spinnerei Wickelvorrichtung
GB9217718D0 (en) * 1992-08-20 1992-09-30 British Tech Group Method of and apparatus for nmr testing
WO1996026453A2 (en) 1995-02-24 1996-08-29 British Technology Group Limited Method of and apparatus for nuclear quadrupole resonance testing a sample, and pulse sequence for exciting nuclear quadrupole resonance
DE19511794B4 (de) * 1995-03-30 2005-12-29 Siemens Ag Verfahren zur Gewinnung von Bilddaten in einem Kernspintomographiegerät und Kernspintomographiegerät zur Durchführung des Verfahrens
USRE45725E1 (en) 2000-12-21 2015-10-06 University Of Virginia Patent Foundation Method and apparatus for spin-echo-train MR imaging using prescribed signal evolutions
AU2002232876A1 (en) 2000-12-21 2002-07-01 University Of Virginia Patent Foundation Method and apparatus for spin-echo-train mr imaging using prescribed signal evolutions
US11047815B2 (en) * 2018-05-11 2021-06-29 Arcady Reiderman Method and apparatus for nuclear magnetic resonance measurements on borehole materials

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
US4484138A (en) * 1982-07-01 1984-11-20 General Electric Company Method of eliminating effects of spurious free induction decay NMR signal caused by imperfect 180 degrees RF pulses
US4521733A (en) * 1983-05-23 1985-06-04 General Electric Company NMR Imaging of the transverse relaxation time using multiple spin echo sequences
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
US4574239A (en) * 1983-07-19 1986-03-04 The Regents Of The University Of California Method for flow measurement using nuclear magnetic resonance
US4613949A (en) * 1984-02-17 1986-09-23 General Electric Company Composite pulses for time reversal in NMR imaging
US4628262A (en) * 1985-02-05 1986-12-09 Advanced Nmr Systems, Inc. Multiple echo chemical shift imaging

Also Published As

Publication number Publication date
JPS6241648A (ja) 1987-02-23
EP0204569B1 (de) 1991-06-12
ATE64472T1 (de) 1991-06-15
US4695800A (en) 1987-09-22
EP0204569A3 (en) 1988-03-09
EP0204569A2 (de) 1986-12-10
JP2641426B2 (ja) 1997-08-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8327 Change in the person/name/address of the patent owner

Owner name: SIEMENS AG, 80333 MUENCHEN, DE

8339 Ceased/non-payment of the annual fee