DE69215310T2 - Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz mit der Möglichkeit der Kompensation von durch Wirbelströme gestörten Gradientenfeldern - Google Patents

Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz mit der Möglichkeit der Kompensation von durch Wirbelströme gestörten Gradientenfeldern

Info

Publication number
DE69215310T2
DE69215310T2 DE69215310T DE69215310T DE69215310T2 DE 69215310 T2 DE69215310 T2 DE 69215310T2 DE 69215310 T DE69215310 T DE 69215310T DE 69215310 T DE69215310 T DE 69215310T DE 69215310 T2 DE69215310 T2 DE 69215310T2
Authority
DE
Germany
Prior art keywords
disturbed
compensating
possibility
magnetic resonance
resonance imaging
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 - Lifetime
Application number
DE69215310T
Other languages
English (en)
Other versions
DE69215310D1 (de
Inventor
Daihachirou Tsuruno
Hiromi Kawamoto
Motohiro Miura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Publication of DE69215310D1 publication Critical patent/DE69215310D1/de
Application granted granted Critical
Publication of DE69215310T2 publication Critical patent/DE69215310T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • G01R33/3854—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils means for active and/or passive vibration damping or acoustical noise suppression in gradient magnet coil systems
    • 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • G01R33/3852—Gradient amplifiers; means for controlling the application of a gradient magnetic field to the sample, e.g. a gradient signal synthesizer
    • 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)
  • 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)
  • High Energy & Nuclear Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69215310T 1991-09-19 1992-09-17 Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz mit der Möglichkeit der Kompensation von durch Wirbelströme gestörten Gradientenfeldern Expired - Lifetime DE69215310T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23982991 1991-09-19

Publications (2)

Publication Number Publication Date
DE69215310D1 DE69215310D1 (de) 1997-01-02
DE69215310T2 true DE69215310T2 (de) 1997-06-19

Family

ID=17050476

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69215310T Expired - Lifetime DE69215310T2 (de) 1991-09-19 1992-09-17 Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz mit der Möglichkeit der Kompensation von durch Wirbelströme gestörten Gradientenfeldern

Country Status (3)

Country Link
US (1) US5332969A (de)
EP (1) EP0533173B1 (de)
DE (1) DE69215310T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3159225B2 (ja) * 1992-06-26 2001-04-23 セイコーエプソン株式会社 インクジェット記録装置
JP3233175B2 (ja) * 1993-03-11 2001-11-26 セイコーエプソン株式会社 インクジェット式記録装置
DE19639853A1 (de) * 1996-09-27 1998-05-07 Deutsch Zentr Luft & Raumfahrt Verfahren und Vorrichtung zur Magnetresonanzuntersuchung
US6154030A (en) * 1998-03-30 2000-11-28 Varian, Inc. Digital eddy current compensation
JP2004513720A (ja) * 2000-11-14 2004-05-13 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 傾斜磁場の非線形性の補正を行う磁気共鳴撮像方法
DE10104365C1 (de) * 2001-02-01 2002-08-22 Bruker Biospin Gmbh Supraleitendes Magnetsystem und magnetisches Resonanzspektrometer sowie Verfahre zu dessen Betrieb
US7345559B2 (en) * 2001-09-13 2008-03-18 General Electric Company High field open MRI magnet isolation system and method
US6937454B2 (en) * 2002-06-25 2005-08-30 Tyco Electronics Corporation Integrated device providing overcurrent and overvoltage protection and common-mode filtering to data bus interface
ITSV20020030A1 (it) * 2002-07-01 2004-01-02 Esaote Spa Metodo di compensazione di correnti parassite causate da gradienti nelle macchine per il rilevametno d'immagini in risonanza magnetica nucle
US20040113622A1 (en) * 2002-12-13 2004-06-17 Huageng Luo Active damping for open MRI image stabilization
EP1592978A1 (de) * 2003-02-05 2005-11-09 Koninklijke Philips Electronics N.V. Kompensation vonmagnetfeldstörungen aufgrund von vibrationen in einem mri-system
JP3930439B2 (ja) 2003-02-06 2007-06-13 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 渦電流補正方法および磁気共鳴撮影装置
GB2400671B (en) * 2003-02-12 2006-05-10 Siemens Ag Magnetic resonance apparatus with a coil arrangement and an electrically conducting structure
JP6662624B2 (ja) * 2015-12-04 2020-03-11 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及び傾斜磁場電源装置
US10732248B2 (en) 2017-05-22 2020-08-04 Synaptive Medical (Barbados) Inc. System and method to reduce eddy current artifacts in magnetic resonance imaging
EP3640661A1 (de) * 2018-10-16 2020-04-22 Siemens Healthcare GmbH Verfahren und steuereinheit zur aktiven kompensation von wirbelstrominduzierten magnetfeldern in der magnetresonanzbildgebung
GB2578457B (en) 2018-10-29 2021-01-13 Siemens Healthcare Ltd Anomaly detection and correlation system.
US11156688B2 (en) 2018-12-28 2021-10-26 Hyperfine, Inc. Correcting for hysteresis in magnetic resonance imaging
US11698430B2 (en) * 2019-08-15 2023-07-11 Hyperfine Operations, Inc. Eddy current mitigation systems and methods

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585995A (en) * 1984-04-19 1986-04-29 Technicare Corporation Nuclear magnetic resonance eddy field suppression apparatus
US4680545A (en) * 1985-01-04 1987-07-14 General Electric Company Method for reduction of acoustical noise generated by magnetic field gradient pulses
US4678996A (en) * 1985-05-07 1987-07-07 Picker International, Inc. Magnetic resonance imaging method
US4924186A (en) * 1986-09-29 1990-05-08 Kabushiki Kaisha Toshiba Magnetic resonance imaging system with auxiliary compensation coil
GB8719396D0 (en) * 1987-08-17 1987-09-23 Picker Int Ltd Eddy current compensation
US5016638A (en) * 1989-03-01 1991-05-21 Hsieh Chi H Vibration control in NMR magnet structures
US4965521A (en) * 1989-08-11 1990-10-23 Spectroscopy Imaging Systems Method and apparatus for compensating eddy current effects in a magnetic resonance device having pulsed magnetic field gradients

Also Published As

Publication number Publication date
US5332969A (en) 1994-07-26
EP0533173A1 (de) 1993-03-24
EP0533173B1 (de) 1996-11-20
DE69215310D1 (de) 1997-01-02

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8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: KRAMER - BARSKE - SCHMIDTCHEN, 81245 MUENCHEN

8320 Willingness to grant licences declared (paragraph 23)
R071 Expiry of right

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