DE68925620D1 - Verfahren zur Phasen- oder Amplitudenkorrektur eines NMR-Signales, indem man einen Referenzmarker benutzt - Google Patents

Verfahren zur Phasen- oder Amplitudenkorrektur eines NMR-Signales, indem man einen Referenzmarker benutzt

Info

Publication number
DE68925620D1
DE68925620D1 DE68925620T DE68925620T DE68925620D1 DE 68925620 D1 DE68925620 D1 DE 68925620D1 DE 68925620 T DE68925620 T DE 68925620T DE 68925620 T DE68925620 T DE 68925620T DE 68925620 D1 DE68925620 D1 DE 68925620D1
Authority
DE
Germany
Prior art keywords
phase
reference marker
nmr signal
amplitude correction
amplitude
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
DE68925620T
Other languages
English (en)
Other versions
DE68925620T2 (de
Inventor
Robert Lyle Thrift
Paul Kevin Morris
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of DE68925620D1 publication Critical patent/DE68925620D1/de
Publication of DE68925620T2 publication Critical patent/DE68925620T2/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
    • G01R33/58—Calibration of imaging systems, e.g. using test probes, Phantoms; Calibration objects or fiducial markers such as active or passive RF coils surrounding an MR active material
    • G01R33/583—Calibration of signal excitation or detection systems, e.g. for optimal RF excitation power or frequency
    • 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
    • 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)
  • 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)
DE68925620T 1988-11-30 1989-11-17 Verfahren zur Phasen- oder Amplitudenkorrektur eines NMR-Signales, indem man einen Referenzmarker benutzt Expired - Fee Related DE68925620T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/278,121 US4885549A (en) 1988-11-30 1988-11-30 Method of phase and amplitude correction of NMR signals using a reference marker

Publications (2)

Publication Number Publication Date
DE68925620D1 true DE68925620D1 (de) 1996-03-21
DE68925620T2 DE68925620T2 (de) 1996-09-26

Family

ID=23063758

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68925620T Expired - Fee Related DE68925620T2 (de) 1988-11-30 1989-11-17 Verfahren zur Phasen- oder Amplitudenkorrektur eines NMR-Signales, indem man einen Referenzmarker benutzt

Country Status (4)

Country Link
US (1) US4885549A (de)
EP (1) EP0371349B1 (de)
JP (1) JPH02220635A (de)
DE (1) DE68925620T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4970457A (en) * 1989-04-05 1990-11-13 The Regents Of The University Of California MRI compensated for spurious rapid variations in static magnetic field during a single MRI sequence
FR2735865B1 (fr) * 1995-06-26 1997-08-22 Centre Nat Rech Scient Dispositif d'analyse quantitative par resonance magnetique nucleaire
DE10032345C2 (de) * 2000-07-04 2002-05-29 Bruker Medical Gmbh Verfahren zum Korrigieren von Störeinflüssen auf die MR-Signale einer im Messvolumen einer MR-Apparatur angeordneten Substanz sowie MR-Apparatur zur Durchführung des Verfahrens und Rechnereinheit
AUPR005900A0 (en) * 2000-09-11 2000-10-05 Nmr Holdings No. 2 Pty Limited Asymmetric radio frequency coils for magnetic resonance
JP4564958B2 (ja) * 2003-09-10 2010-10-20 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 ダイナミックゲインと無線受信コイルをもつ磁気共鳴画像受信回路
US8970217B1 (en) 2010-04-14 2015-03-03 Hypres, Inc. System and method for noise reduction in magnetic resonance imaging

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1496886A (en) * 1974-04-08 1978-01-05 Nat Res Dev Nuclear magnetic resonance apparatus
EP0132337A3 (de) * 1983-07-21 1986-12-30 The Regents Of The University Of California Vorrichtung und Verfahren zur Verminderung des "Aliasing-Artefaktes" bei der sagittalen oder koronalen NMR-Bilderzeugung
JPS6117054A (ja) * 1984-07-03 1986-01-25 Yokogawa Medical Syst Ltd 核磁気共鳴断層撮影装置
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.
US4703267A (en) * 1985-07-17 1987-10-27 Advanced Nmr Systems, Inc. High dynamic range in NMR data acquisition
US4716368A (en) * 1985-08-09 1987-12-29 Picker International, Inc. Magnetic resonance reconstruction and scanning techniques using known information, constraints, and symmetry relations
JPS62231647A (ja) * 1986-03-31 1987-10-12 株式会社東芝 磁気共鳴映像装置
US4703270A (en) * 1986-04-18 1987-10-27 The University Of British Columbia Zero quantum NMR imaging and spectroscopy in a low homogeneity magnetic field
JPS63108254A (ja) * 1986-10-24 1988-05-13 Jeol Ltd ２次元核磁気共鳴における位相補正方法
JPS63302841A (ja) * 1987-06-03 1988-12-09 Fuji Electric Co Ltd 核磁気共鳴映像装置の計測デ−タ誤差補償方法

Also Published As

Publication number Publication date
JPH0422575B2 (de) 1992-04-17
US4885549A (en) 1989-12-05
EP0371349B1 (de) 1996-02-07
DE68925620T2 (de) 1996-09-26
EP0371349A2 (de) 1990-06-06
JPH02220635A (ja) 1990-09-03
EP0371349A3 (de) 1991-02-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee