DE59709890D1 - MR-Verfahren und Anordnung zur Durchführung des Verfahrens - Google Patents

MR-Verfahren und Anordnung zur Durchführung des Verfahrens

Info

Publication number
DE59709890D1
DE59709890D1 DE59709890T DE59709890T DE59709890D1 DE 59709890 D1 DE59709890 D1 DE 59709890D1 DE 59709890 T DE59709890 T DE 59709890T DE 59709890 T DE59709890 T DE 59709890T DE 59709890 D1 DE59709890 D1 DE 59709890D1
Authority
DE
Germany
Prior art keywords
arrangement
carrying
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
DE59709890T
Other languages
German (de)
English (en)
Inventor
Dr Adelfeld
Dr Boernert
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 Intellectual Property and Standards GmbH
Original Assignee
Philips Corporate Intellectual Property GmbH
Koninklijke Philips Electronics NV
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 Philips Corporate Intellectual Property GmbH, Koninklijke Philips Electronics NV filed Critical Philips Corporate Intellectual Property GmbH
Application granted granted Critical
Publication of DE59709890D1 publication Critical patent/DE59709890D1/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
    • G01R33/483—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy
    • G01R33/4833—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices
    • 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
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field
    • 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)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (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)
DE59709890T 1996-08-07 1997-08-04 MR-Verfahren und Anordnung zur Durchführung des Verfahrens Expired - Fee Related DE59709890D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19631845 1996-08-07

Publications (1)

Publication Number Publication Date
DE59709890D1 true DE59709890D1 (de) 2003-05-28

Family

ID=7802006

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59709890T Expired - Fee Related DE59709890D1 (de) 1996-08-07 1997-08-04 MR-Verfahren und Anordnung zur Durchführung des Verfahrens

Country Status (4)

Country Link
US (1) US5929638A (https=)
EP (1) EP0823642B1 (https=)
JP (1) JP3898294B2 (https=)
DE (1) DE59709890D1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6201987B1 (en) * 1998-05-26 2001-03-13 General Electric Company Error compensation for device tracking systems employing electromagnetic fields
DE19826864A1 (de) * 1998-06-17 1999-12-23 Philips Patentverwaltung MR-Verfahren
CA2648310C (en) * 2006-04-12 2016-10-18 Thomson Licensing Virtual dvd on demand and electronic dvd rental/buy/burn
EP3447520A1 (en) * 2017-08-22 2019-02-27 Koninklijke Philips N.V. Data-driven correction of phase depending artefacts in a magnetic resonance imaging system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585995A (en) * 1984-04-19 1986-04-29 Technicare Corporation Nuclear magnetic resonance eddy field suppression apparatus
EP0216523A3 (en) * 1985-08-27 1989-04-05 Resonex, Inc. Process for non-orthogonal nmr imaging
US4698591A (en) * 1986-01-03 1987-10-06 General Electric Company Method for magnetic field gradient eddy current compensation

Also Published As

Publication number Publication date
EP0823642B1 (de) 2003-04-23
EP0823642A1 (de) 1998-02-11
JP3898294B2 (ja) 2007-03-28
JPH1071135A (ja) 1998-03-17
US5929638A (en) 1999-07-27

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH, 20

8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee