ITSV20020030A1 - Metodo di compensazione di correnti parassite causate da gradienti nelle macchine per il rilevametno d'immagini in risonanza magnetica nucle - Google Patents

Metodo di compensazione di correnti parassite causate da gradienti nelle macchine per il rilevametno d'immagini in risonanza magnetica nucle

Info

Publication number
ITSV20020030A1
ITSV20020030A1 IT2002SV000030A ITSV20020030A ITSV20020030A1 IT SV20020030 A1 ITSV20020030 A1 IT SV20020030A1 IT 2002SV000030 A IT2002SV000030 A IT 2002SV000030A IT SV20020030 A ITSV20020030 A IT SV20020030A IT SV20020030 A1 ITSV20020030 A1 IT SV20020030A1
Authority
IT
Italy
Prior art keywords
gradient
detection
compensation
nucle
gradients
Prior art date
Application number
IT2002SV000030A
Other languages
English (en)
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
Priority to IT2002SV000030A priority Critical patent/ITSV20020030A1/it
Priority to DE60327285T priority patent/DE60327285D1/de
Priority to ES03101922T priority patent/ES2326028T3/es
Priority to EP03101922A priority patent/EP1378759B1/en
Priority to AT03101922T priority patent/ATE429650T1/de
Priority to US10/609,570 priority patent/US6867590B2/en
Publication of ITSV20020030A1 publication Critical patent/ITSV20020030A1/it

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)
IT2002SV000030A 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 ITSV20020030A1 (it)

Priority Applications (6)

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
DE60327285T DE60327285D1 (de) 2002-07-01 2003-06-27 Verfahren zur Kompensation von durch Gradienten induzierten Wirbelströmen in Kernspintomographen
ES03101922T ES2326028T3 (es) 2002-07-01 2003-06-27 Procedimiento de compensacion en aparatos de formacion de imagenes por resonancia magnetica nuclear (rmn) de corrientes de foucault inducidas por gradientes.
EP03101922A EP1378759B1 (en) 2002-07-01 2003-06-27 Method of compensating for gradient induced eddy currents in NMR imaging apparatuses
AT03101922T ATE429650T1 (de) 2002-07-01 2003-06-27 Verfahren zur kompensation von durch gradienten induzierten wirbelströmen in kernspintomographen
US10/609,570 US6867590B2 (en) 2002-07-01 2003-07-01 Method of compensating for gradient induced eddy currents in NMR imaging apparatuses

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
ITSV20020030A1 true ITSV20020030A1 (it) 2004-01-02

Family

ID=29720173

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (6)

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

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
WO2005006979A1 (ja) * 2003-07-17 2005-01-27 Hitachi Medical Corporation 磁気共鳴イメージング方法及び装置
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
ES2837256T3 (es) 2015-05-12 2021-06-29 Tae Tech Inc Sistemas y procedimientos para reducir corrientes de Foucault no deseadas
EP3903117B1 (en) 2018-12-28 2024-06-26 Hyperfine, 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 (en) 1987-09-18 1989-03-22 Koninklijke Philips Electronics N.V. Magnetic resonance imaging apparatus with eddy-current disturbances correction system
EP0533173B1 (en) * 1991-09-19 1996-11-20 Kabushiki Kaisha Toshiba Magnetic resonance imaging method and apparatus capable of compensating for disturbed gradient field caused by eddy current
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
US20040046554A1 (en) 2004-03-11
US6867590B2 (en) 2005-03-15
ATE429650T1 (de) 2009-05-15
EP1378759A1 (en) 2004-01-07
EP1378759B1 (en) 2009-04-22
ES2326028T3 (es) 2009-09-29
DE60327285D1 (de) 2009-06-04

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