ATE429650T1 - Verfahren zur kompensation von durch gradienten induzierten wirbelströmen in kernspintomographen - Google Patents

Verfahren zur kompensation von durch gradienten induzierten wirbelströmen in kernspintomographen

Info

Publication number
ATE429650T1
ATE429650T1 AT03101922T AT03101922T ATE429650T1 AT E429650 T1 ATE429650 T1 AT E429650T1 AT 03101922 T AT03101922 T AT 03101922T AT 03101922 T AT03101922 T AT 03101922T AT E429650 T1 ATE429650 T1 AT E429650T1
Authority
AT
Austria
Prior art keywords
gradient
eddy currents
compensating
currents induced
gradients
Prior art date
Application number
AT03101922T
Other languages
English (en)
Inventor
Davide Carlini
Original Assignee
Esaote Spa
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 Esaote Spa filed Critical Esaote Spa
Application granted granted Critical
Publication of ATE429650T1 publication Critical patent/ATE429650T1/de

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
    • G01R33/56518—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

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)
  • Magnetic Resonance Imaging Apparatus (AREA)
AT03101922T 2002-07-01 2003-06-27 Verfahren zur kompensation von durch gradienten induzierten wirbelströmen in kernspintomographen ATE429650T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2002SV000030A ITSV20020030A1 (it) 2002-07-01 2002-07-01 Metodo di compensazione di correnti parassite causate da gradienti nelle macchine per il rilevametno d'immagini in risonanza magnetica nucle

Publications (1)

Publication Number Publication Date
ATE429650T1 true ATE429650T1 (de) 2009-05-15

Family

ID=29720173

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03101922T ATE429650T1 (de) 2002-07-01 2003-06-27 Verfahren zur kompensation von durch gradienten induzierten wirbelströmen in kernspintomographen

Country Status (6)

Country Link
US (1) US6867590B2 (de)
EP (1) EP1378759B1 (de)
AT (1) ATE429650T1 (de)
DE (1) DE60327285D1 (de)
ES (1) ES2326028T3 (de)
IT (1) ITSV20020030A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6465590B1 (en) * 1998-03-30 2002-10-15 California Institute Of Technology Telechelic alkadiene polymers with crosslinkable end groups and methods for making the same
EP1647224B1 (de) * 2003-07-17 2012-06-06 Hitachi Medical Corporation Magnetresonanztomographie-verfahren und -system
JP4820063B2 (ja) * 2004-03-24 2011-11-24 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
DE102010035539B4 (de) * 2010-08-26 2012-04-05 Siemens Aktiengesellschaft Verfahren zur Kompensation von Wirbelstromfeldern in Magnetresonanzaufnahmen und Magnetresonanzeinrichtung
DE102011079578B4 (de) 2011-07-21 2013-02-21 Siemens Aktiengesellschaft Ansteuerung von Feldspulen einer Magnetresonanzanlage mit Wirbelstromkompensation
CA2983344A1 (en) 2015-05-12 2016-11-17 Tri Alpha Energy, Inc. Systems and methods for reducing undesired eddy currents
US11867787B2 (en) 2018-12-28 2024-01-09 Hyperfine Operations, Inc. Correcting for hysteresis in magnetic resonance imaging
CN114556128A (zh) * 2019-08-15 2022-05-27 海珀菲纳运营有限公司 涡流缓解系统和方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698591A (en) 1986-01-03 1987-10-06 General Electric Company Method for magnetic field gradient eddy current compensation
EP0307516A1 (de) 1987-09-18 1989-03-22 Koninklijke Philips Electronics N.V. Magnetresonanzabbildungsgerät mit Korrektionssystem für Wirbelströmeeffekte
EP0533173B1 (de) * 1991-09-19 1996-11-20 Kabushiki Kaisha Toshiba Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz mit der Möglichkeit der Kompensation von durch Wirbelströme gestörten Gradientenfeldern
US6448773B1 (en) * 2000-02-24 2002-09-10 Toshiba America Mri, Inc. Method and system for measuring and compensating for eddy currents induced during NMR imaging operations

Also Published As

Publication number Publication date
EP1378759A1 (de) 2004-01-07
ES2326028T3 (es) 2009-09-29
ITSV20020030A1 (it) 2004-01-02
DE60327285D1 (de) 2009-06-04
EP1378759B1 (de) 2009-04-22
US20040046554A1 (en) 2004-03-11
US6867590B2 (en) 2005-03-15

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