IL123224A0 - Method for reducing maxwell term artifacts in fast spin echo mr images - Google Patents

Method for reducing maxwell term artifacts in fast spin echo mr images

Info

Publication number
IL123224A0
IL123224A0 IL12322498A IL12322498A IL123224A0 IL 123224 A0 IL123224 A0 IL 123224A0 IL 12322498 A IL12322498 A IL 12322498A IL 12322498 A IL12322498 A IL 12322498A IL 123224 A0 IL123224 A0 IL 123224A0
Authority
IL
Israel
Prior art keywords
images
reducing
spin echo
fast spin
maxwell term
Prior art date
Application number
IL12322498A
Other languages
English (en)
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IL123224A0 publication Critical patent/IL123224A0/xx

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
    • G01R33/54—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
    • G01R33/56572—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of a gradient magnetic field, e.g. non-linearity of a gradient magnetic field
    • G01R33/56581—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of a gradient magnetic field, e.g. non-linearity of a gradient magnetic field due to Maxwell fields, i.e. concomitant fields
    • 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)
  • 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)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
IL12322498A 1997-02-11 1998-02-08 Method for reducing maxwell term artifacts in fast spin echo mr images IL123224A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3759997P 1997-02-11 1997-02-11
US08/831,684 US6008647A (en) 1997-02-11 1997-04-10 Method for reducing Maxwell term artifacts in fast spin echo MR images

Publications (1)

Publication Number Publication Date
IL123224A0 true IL123224A0 (en) 1998-09-24

Family

ID=26714292

Family Applications (1)

Application Number Title Priority Date Filing Date
IL12322498A IL123224A0 (en) 1997-02-11 1998-02-08 Method for reducing maxwell term artifacts in fast spin echo mr images

Country Status (5)

Country Link
US (1) US6008647A (xx)
JP (1) JP4035219B2 (xx)
CN (1) CN1217622C (xx)
DE (1) DE19801808B4 (xx)
IL (1) IL123224A0 (xx)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6011392A (en) * 1997-04-10 2000-01-04 General Electric Company Method for reducing Maxwell term artifacts in fast spin echo MR images
JP2002519165A (ja) * 1998-07-02 2002-07-02 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 スプリアスの磁気信号が原因による磁気共鳴信号における人工物を減少させる方法
JP4503747B2 (ja) * 1999-12-13 2010-07-14 株式会社東芝 磁気共鳴イメージング装置
JP3875479B2 (ja) * 2000-10-20 2007-01-31 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 磁気共鳴撮影装置
FR2838195B1 (fr) * 2002-04-05 2005-03-18 Ge Med Sys Global Tech Co Llc Procede d'imagerie rapide par resonnance magnetique nucleaire
DE102005015069B4 (de) * 2005-04-01 2008-03-27 Siemens Ag Verfahren zur Vermeidung linearer Phasenfehler in der Magnetresonanz-Spektroskopie
JP4249215B2 (ja) * 2006-10-06 2009-04-02 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 磁気共鳴イメージング装置
DE102006059499B4 (de) * 2006-12-15 2009-06-10 Siemens Ag Verfahren zur Reduzierung von Wirbelströmen bei einem Magnetresonanzgerät
JP5022696B2 (ja) * 2006-12-22 2012-09-12 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 磁気共鳴イメージング装置
JP5427565B2 (ja) * 2009-11-24 2014-02-26 株式会社日立製作所 Ｍｒｉ装置用磁場調整
CN103185876B (zh) * 2011-12-30 2015-05-13 西门子(深圳)磁共振有限公司 磁共振成像方法及磁共振成像装置
DE102012205587B4 (de) 2012-04-04 2013-12-24 Siemens Aktiengesellschaft Schichtspezifische Phasenkorrektur bei Schicht-Multiplexing
DE102012212983B3 (de) * 2012-07-24 2014-01-23 Siemens Aktiengesellschaft Vermeidung von Einfaltungsartefakten bei der Aufnahme von Magnetresonanzdaten
DE102012219010B4 (de) * 2012-10-18 2014-04-30 Siemens Aktiengesellschaft Optimierung einer Pulssequenz für eine Magnetresonanzanlage
DE102012219016B3 (de) * 2012-10-18 2014-03-27 Siemens Aktiengesellschaft Optimierung einer Pulssequenz für eine Magnetresonanzanlage
KR101442619B1 (ko) * 2012-11-26 2014-09-22 삼성전자주식회사 Ｍｒｉ 시스템 및 ｍｒｉ 시스템 진단 방법
US10132889B2 (en) * 2013-05-22 2018-11-20 General Electric Company System and method for reducing acoustic noise level in MR imaging
DE102013227170B3 (de) * 2013-12-27 2015-07-02 Siemens Aktiengesellschaft Verfahren und Steuereinrichtung zur Ansteuerung eines Magnetresonanzsystems
JP6591208B2 (ja) 2015-06-09 2019-10-16 キヤノンメディカルシステムズ株式会社 磁気共鳴イメージング装置
US10705170B1 (en) * 2019-02-15 2020-07-07 GE Precision Healthcare LLC Methods and systems for removing spike noise in magnetic resonance imaging
EP3748386A1 (en) * 2019-06-03 2020-12-09 Siemens Healthcare GmbH Minimization of effects of concomitant fields in multi echo magnetic resonance imaging
CN115616461B (zh) * 2022-10-17 2023-07-07 浙江大学 一种基于可调回波时间编码的磁共振磁场测量方法及装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728890A (en) * 1985-08-16 1988-03-01 Picker International, Inc. Motion artifact suppression technique of magnetic resonance imaging
US5270654A (en) * 1991-07-05 1993-12-14 Feinberg David A Ultra-fast multi-section MRI using gradient and spin echo (grase) imaging
US5281916A (en) * 1992-07-29 1994-01-25 General Electric Company NMR angiography using fast spin echo pulse sequences
JP3505294B2 (ja) * 1995-03-28 2004-03-08 ジーイー横河メディカルシステム株式会社 Ｍｒｉ装置
DE19520203C1 (de) * 1995-06-01 1996-11-21 Siemens Ag Verfahren zur Vermeidung von Bildabschattungen bei Kernspintomographiegeräten, die mit Multiechosequenzen betrieben werden
US5869965A (en) * 1997-02-07 1999-02-09 General Electric Company Correction of artifacts caused by Maxwell terms in MR echo-planar images
US5877629A (en) * 1997-04-08 1999-03-02 General Electric Company Correction for maxwell fields produced during non-rectilinear k-space sampling

Also Published As

Publication number Publication date
JP4035219B2 (ja) 2008-01-16
US6008647A (en) 1999-12-28
DE19801808A1 (de) 1998-08-13
CN1217622C (zh) 2005-09-07
JPH10290795A (ja) 1998-11-04
CN1190572A (zh) 1998-08-19
DE19801808B4 (de) 2009-06-04

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