JP4201993B2 - Ｎｍｒイメージング操作中に誘導される渦電流の測定および補償のための装置及びシステム - Google Patents

Ｎｍｒイメージング操作中に誘導される渦電流の測定および補償のための装置及びシステム Download PDF

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JP4201993B2
JP4201993B2 JP2001049792A JP2001049792A JP4201993B2 JP 4201993 B2 JP4201993 B2 JP 4201993B2 JP 2001049792 A JP2001049792 A JP 2001049792A JP 2001049792 A JP2001049792 A JP 2001049792A JP 4201993 B2 JP4201993 B2 JP 4201993B2
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gradient
magnetic field
spin
echo
signal data
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ウェイグオ・ツァン
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Toshiba America MRI Inc
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    • 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

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  • 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)
JP2001049792A 2000-02-24 2001-02-26 Ｎｍｒイメージング操作中に誘導される渦電流の測定および補償のための装置及びシステム Expired - Lifetime JP4201993B2 (ja)

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US09/512323 2000-02-24
US09/512,323 US6448773B1 (en) 2000-02-24 2000-02-24 Method and system for measuring and compensating for eddy currents induced during NMR imaging operations

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JP2008186366A Division JP2009000538A (ja) 2000-02-24 2008-07-17 Ｎｍｒイメージング操作中に誘導される渦電流の測定及び補償のための装置

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JP2001258865A JP2001258865A (ja) 2001-09-25
JP2001258865A5 JP2001258865A5 (https=) 2008-03-06
JP4201993B2 true JP4201993B2 (ja) 2008-12-24

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JP2001049792A Expired - Lifetime JP4201993B2 (ja) 2000-02-24 2001-02-26 Ｎｍｒイメージング操作中に誘導される渦電流の測定および補償のための装置及びシステム
JP2008186366A Pending JP2009000538A (ja) 2000-02-24 2008-07-17 Ｎｍｒイメージング操作中に誘導される渦電流の測定及び補償のための装置

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JP (2) JP4201993B2 (https=)

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WO2016182407A1 (ko) 2015-05-14 2016-11-17 아탈라에르긴 자기 공명 영상 스캐너
WO2016195281A1 (ko) 2015-05-21 2016-12-08 아탈라에르긴 경사자장을 발생시키기 위해 복수의 코일을 이용하는 경사자장 발생 모듈
US10571537B2 (en) * 2015-05-21 2020-02-25 Bilkent University Multi-purpose gradient array for magnetic resonance imaging
TR201914968A1 (tr) 2017-04-06 2022-02-21 Ihsan Dogramaci Bilkent Ueniversitesi Optimum faz kayması darbe genişlik modülasyonu modelinin uygulanması vasıtasıyla gradyan dizisi sisteminde minimum akım dalgalanmasının algoritması ve uygulanması.
TW202012951A (zh) 2018-07-31 2020-04-01 美商超精細研究股份有限公司 低場漫射加權成像
US11490916B2 (en) 2019-03-29 2022-11-08 Covidien Lp Engagement features and methods for attaching a drive rod to a knife blade in an articulating surgical instrument
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JP2001258865A (ja) 2001-09-25
JP2009000538A (ja) 2009-01-08
US6448773B1 (en) 2002-09-10

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