JP4898100B2 - 多相型ｒｆパルス・フリップ角を組み入れて高磁場ｍｒ撮像でのｒｆ電力を低減する方法及び装置 - Google Patents

多相型ｒｆパルス・フリップ角を組み入れて高磁場ｍｒ撮像でのｒｆ電力を低減する方法及び装置 Download PDF

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JP4898100B2
JP4898100B2 JP2004194081A JP2004194081A JP4898100B2 JP 4898100 B2 JP4898100 B2 JP 4898100B2 JP 2004194081 A JP2004194081 A JP 2004194081A JP 2004194081 A JP2004194081 A JP 2004194081A JP 4898100 B2 JP4898100 B2 JP 4898100B2
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flip angle
pulse
phase
pulse sequence
pulses
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JP2005021690A (ja
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リード・エフ・ブッセ
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GE Medical Systems Global Technology Co LLC
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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
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5613—Generating steady state signals, e.g. low flip angle sequences [FLASH]

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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)
JP2004194081A 2003-07-02 2004-06-30 多相型ｒｆパルス・フリップ角を組み入れて高磁場ｍｒ撮像でのｒｆ電力を低減する方法及び装置 Expired - Lifetime JP4898100B2 (ja)

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US10/612,596 US6956374B2 (en) 2003-07-02 2003-07-02 Method and apparatus to reduce RF power in high field MR imaging incorporating multi-phase RF pulse flip angles
US10/612,596 2003-07-02

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JP2005021690A JP2005021690A (ja) 2005-01-27
JP2005021690A5 JP2005021690A5 (enExample) 2007-08-09
JP4898100B2 true JP4898100B2 (ja) 2012-03-14

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JP (1) JP4898100B2 (enExample)
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USRE45725E1 (en) 2000-12-21 2015-10-06 University Of Virginia Patent Foundation Method and apparatus for spin-echo-train MR imaging using prescribed signal evolutions
USRE47178E1 (en) 2000-12-21 2018-12-25 University Of Virginia Patent Foundation Method and apparatus for spin-echo-train MR imaging using prescribed signal evolutions
JP2007068796A (ja) * 2005-09-08 2007-03-22 Ge Medical Systems Global Technology Co Llc Ｒｆパルス印加方法およびｍｒｉ装置
US7635977B2 (en) * 2006-04-06 2009-12-22 Catholic Healthcare West, California Nonprofit Public Benefit Corporation MR imaging with an RF pulse producing reduced magnetization transfer
US7868618B2 (en) * 2006-06-16 2011-01-11 Hitachi Medical Corporation Magnetic resonance imaging apparatus
JP5118052B2 (ja) * 2006-10-06 2013-01-16 株式会社日立メディコ 磁気共鳴イメージング装置
US7479783B2 (en) * 2006-11-15 2009-01-20 Beth Israel Deaconess Medical Center, Inc. Echo train preparation for fast spin-echo acquisition
US8483798B2 (en) * 2007-01-15 2013-07-09 General Electric Company System and method for metabolic MR imaging of a hyperpolarized agent
US8228060B2 (en) * 2007-06-25 2012-07-24 General Electric Company Method and apparatus for generating a flip angle schedule for a spin echo train pulse sequence
DE102007043445A1 (de) * 2007-09-12 2009-04-09 Siemens Ag Verfahren zur Aufnahme einer Magnetresonanztomographiemesssequenz mit einer Magnetresonanztomographieeinrichtung sowie zugehörige Mangetresonanztomographieeinrichtung
US7710115B2 (en) * 2007-09-14 2010-05-04 The Board Of Trustees Of The Leland Stanford Junior University Independent phase modulation for efficient dual-band 3D imaging
US8526754B2 (en) * 2009-05-28 2013-09-03 Aptina Imaging Corporation System for enhancing depth of field with digital image processing
JP5611661B2 (ja) 2009-06-04 2014-10-22 株式会社東芝 磁気共鳴イメージング装置
US8890522B2 (en) 2010-04-02 2014-11-18 General Electric Company Accelerated pseudo-random data magnetic resonance imaging system and method
JP5960134B2 (ja) * 2011-06-09 2016-08-02 株式会社日立製作所 磁気共鳴イメージング装置及びフリップ角決定方法
CN103118593A (zh) * 2011-09-22 2013-05-22 株式会社东芝 磁共振成像装置以及磁共振成像方法
JP6084430B2 (ja) * 2012-10-30 2017-02-22 株式会社日立製作所 再収束ｒｆパルスのフリップ角制御法及び磁気共鳴イメージング装置
WO2014126134A1 (ja) * 2013-02-15 2014-08-21 株式会社 日立メディコ 磁気共鳴イメージング装置及び不要コントラスト低減方法
JP6804228B2 (ja) * 2016-08-01 2020-12-23 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
US11255942B2 (en) 2016-08-30 2022-02-22 Canon Medical Systems Corporation Magnetic resonance imaging apparatus
CN107638179B (zh) * 2017-08-28 2020-09-04 上海联影医疗科技有限公司 磁共振翻转角的计算方法、系统和计算机可读存储介质
JP7223580B2 (ja) * 2018-01-26 2023-02-16 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
CN112230171B (zh) * 2020-09-08 2022-11-25 上海联影医疗科技股份有限公司 磁共振接收机、磁共振系统和信号接收方法
CN117388782A (zh) * 2023-10-19 2024-01-12 中科微影(泰州)医疗科技有限公司 一种磁共振成像射频功率自动校正方法

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US4970457A (en) * 1989-04-05 1990-11-13 The Regents Of The University Of California MRI compensated for spurious rapid variations in static magnetic field during a single MRI sequence
US5150053A (en) * 1989-07-28 1992-09-22 The Board Of Trustees Of The Leland Stanford Junior University Magnetic resonance imaging of short T2 species with improved contrast
US5499629A (en) * 1994-02-01 1996-03-19 Board Of Trustees Of The Leland Stanford Junior University Slice profile stabilization for segmented k-space magnetic resonance imaging
JP3405813B2 (ja) * 1994-05-31 2003-05-12 株式会社東芝 磁気共鳴イメージング方法および磁気共鳴イメージング装置
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JP4263015B2 (ja) * 2003-04-30 2009-05-13 株式会社日立メディコ 磁気共鳴イメージング装置

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JP2005021690A (ja) 2005-01-27
DE102004031204B4 (de) 2014-04-24
US20050001617A1 (en) 2005-01-06
DE102004031204A1 (de) 2005-01-20
US6956374B2 (en) 2005-10-18

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