NL8601845A - Mri-werkwijze en inrichting voor het reduceren van artefacten door middel van fasecodering. - Google Patents

Mri-werkwijze en inrichting voor het reduceren van artefacten door middel van fasecodering. Download PDF

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Publication number
NL8601845A
NL8601845A NL8601845A NL8601845A NL8601845A NL 8601845 A NL8601845 A NL 8601845A NL 8601845 A NL8601845 A NL 8601845A NL 8601845 A NL8601845 A NL 8601845A NL 8601845 A NL8601845 A NL 8601845A
Authority
NL
Netherlands
Prior art keywords
magnetic field
field gradient
integral
strength
frequency electromagnetic
Prior art date
Application number
NL8601845A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Priority to NL8601845A priority Critical patent/NL8601845A/nl
Priority to CA000542090A priority patent/CA1256165A/fr
Priority to EP87201330A priority patent/EP0253446B1/fr
Priority to DE8787201330T priority patent/DE3769532D1/de
Priority to US07/073,679 priority patent/US4849698A/en
Priority to JP62174985A priority patent/JP2966845B2/ja
Priority to CN87105723A priority patent/CN1011546B/zh
Priority to IL83247A priority patent/IL83247A0/xx
Publication of NL8601845A publication Critical patent/NL8601845A/nl

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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

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)
NL8601845A 1986-07-15 1986-07-15 Mri-werkwijze en inrichting voor het reduceren van artefacten door middel van fasecodering. NL8601845A (nl)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL8601845A NL8601845A (nl) 1986-07-15 1986-07-15 Mri-werkwijze en inrichting voor het reduceren van artefacten door middel van fasecodering.
CA000542090A CA1256165A (fr) 1986-07-15 1987-07-13 Methode et dispositif pour reduire les artefacts d'imagerie a resonance magnetique dans les parties excentriques des images
EP87201330A EP0253446B1 (fr) 1986-07-15 1987-07-13 Procédé pour réduire les artefacts dans une image RMN décentrée
DE8787201330T DE3769532D1 (de) 1986-07-15 1987-07-13 Verfahren zur verminderung von artefakten bei nichtzentrischen nmr-bildern.
US07/073,679 US4849698A (en) 1986-07-15 1987-07-14 Method of reducing MR image artefacts in off-center images
JP62174985A JP2966845B2 (ja) 1986-07-15 1987-07-15 被検体から核磁化分布画像を算定する装置
CN87105723A CN1011546B (zh) 1986-07-15 1987-07-15 在偏心图象中减少磁共振图象干扰因素的方法以及实现该方法的装置
IL83247A IL83247A0 (en) 1986-07-15 1987-07-20 Method and device for reducing mr.image artifacts in off-centre images

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8601845A NL8601845A (nl) 1986-07-15 1986-07-15 Mri-werkwijze en inrichting voor het reduceren van artefacten door middel van fasecodering.
NL8601845 1986-07-15

Publications (1)

Publication Number Publication Date
NL8601845A true NL8601845A (nl) 1988-02-01

Family

ID=19848318

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8601845A NL8601845A (nl) 1986-07-15 1986-07-15 Mri-werkwijze en inrichting voor het reduceren van artefacten door middel van fasecodering.

Country Status (8)

Country Link
US (1) US4849698A (fr)
EP (1) EP0253446B1 (fr)
JP (1) JP2966845B2 (fr)
CN (1) CN1011546B (fr)
CA (1) CA1256165A (fr)
DE (1) DE3769532D1 (fr)
IL (1) IL83247A0 (fr)
NL (1) NL8601845A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014007A (en) * 1985-02-15 1991-05-07 Hitachi, Ltd. Nuclear magnetic resonance imaging method and apparatus
US5245283A (en) * 1991-08-07 1993-09-14 Picker International, Inc. Technique for shifting out-of-slice artifacts to the edge of the field of view
JP3183915B2 (ja) * 1991-09-03 2001-07-09 株式会社東芝 磁気共鳴イメージング装置
DE10254660B4 (de) * 2002-11-22 2006-04-27 Siemens Ag Verfahren zur Korrektur des B 1- Felds bei MR-Messungen und Magnetresonanz-Messeinrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968424A (en) * 1974-08-01 1976-07-06 Varian Associates Fourier transform NMR spectroscopy employing a phase modulated rf carrier
US4599565A (en) * 1981-12-15 1986-07-08 The Regents Of The University Of Calif. Method and apparatus for rapid NMR imaging using multi-dimensional reconstruction techniques
US4616182A (en) * 1983-11-09 1986-10-07 Technicare Corporation Nuclear magnetic resonance signal artifact removal
US4593247A (en) * 1983-11-25 1986-06-03 General Electric Company Method of NMR imaging with off-center zoom scan
NL8400699A (nl) * 1984-03-05 1985-10-01 Philips Nv Werkwijze voor het verminderen van artefacten bij het met behulp van fourier-zeugmatografie bepalen van beelden.
US4567893A (en) * 1984-11-21 1986-02-04 General Electric Company Method of eliminating breathing artifacts in NMR imaging
US4612504A (en) * 1984-11-21 1986-09-16 General Electric Company Method for removing the effects of baseline error components in NMR imaging applications
US4698592A (en) * 1985-08-16 1987-10-06 The Regents Of The University Of California MRI of chemical shift spectra within limited inner volume
US4649347A (en) * 1985-11-15 1987-03-10 General Electric Company Method for off-center field-of-view imaging using MR

Also Published As

Publication number Publication date
DE3769532D1 (de) 1991-05-29
CN1011546B (zh) 1991-02-06
EP0253446A1 (fr) 1988-01-20
JP2966845B2 (ja) 1999-10-25
CA1256165A (fr) 1989-06-20
US4849698A (en) 1989-07-18
CN87105723A (zh) 1988-03-02
EP0253446B1 (fr) 1991-04-24
IL83247A0 (en) 1987-12-31
JPS6324930A (ja) 1988-02-02

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BV The patent application has lapsed