JP4225620B2 - Ｍｒｉ装置 - Google Patents

Ｍｒｉ装置 Download PDF

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Publication number
JP4225620B2
JP4225620B2 JP00473499A JP473499A JP4225620B2 JP 4225620 B2 JP4225620 B2 JP 4225620B2 JP 00473499 A JP00473499 A JP 00473499A JP 473499 A JP473499 A JP 473499A JP 4225620 B2 JP4225620 B2 JP 4225620B2
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JP
Japan
Prior art keywords
echo
magnetic field
gradient magnetic
pulse sequence
mri apparatus
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Expired - Fee Related
Application number
JP00473499A
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English (en)
Japanese (ja)
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JP2000201903A5 (enExample
JP2000201903A (ja
Inventor
好男 町田
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
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Toshiba Corp
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Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP00473499A priority Critical patent/JP4225620B2/ja
Priority to US09/480,159 priority patent/US6380739B1/en
Publication of JP2000201903A publication Critical patent/JP2000201903A/ja
Publication of JP2000201903A5 publication Critical patent/JP2000201903A5/ja
Application granted granted Critical
Publication of JP4225620B2 publication Critical patent/JP4225620B2/ja
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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
    • G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
    • 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
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • G01R33/5617—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using RF refocusing, e.g. RARE

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (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)
JP00473499A 1999-01-11 1999-01-11 Ｍｒｉ装置 Expired - Fee Related JP4225620B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP00473499A JP4225620B2 (ja) 1999-01-11 1999-01-11 Ｍｒｉ装置
US09/480,159 US6380739B1 (en) 1999-01-11 2000-01-10 Multi-echo sequence based MR imaging for fluid in motion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00473499A JP4225620B2 (ja) 1999-01-11 1999-01-11 Ｍｒｉ装置

Publications (3)

Publication Number Publication Date
JP2000201903A JP2000201903A (ja) 2000-07-25
JP2000201903A5 JP2000201903A5 (enExample) 2006-03-02
JP4225620B2 true JP4225620B2 (ja) 2009-02-18

Family

ID=11592146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP00473499A Expired - Fee Related JP4225620B2 (ja) 1999-01-11 1999-01-11 Ｍｒｉ装置

Country Status (2)

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US (1) US6380739B1 (enExample)
JP (1) JP4225620B2 (enExample)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4515616B2 (ja) * 2000-09-25 2010-08-04 株式会社東芝 磁気共鳴イメージング装置
JP3814157B2 (ja) * 2001-04-17 2006-08-23 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 Ｍｒｉ装置
US6498946B1 (en) * 2001-10-05 2002-12-24 Ge Medical Systems Global Technology Co., Llc Efficient multi-slice acquisition with black blood contrast
US7546155B2 (en) 2001-10-05 2009-06-09 General Electric Company Efficient multi-slice acquisition with black blood contrast in fast spin echo imaging
US7068896B1 (en) 2002-02-07 2006-06-27 Northwestern University Method and system for the controlled production of polarization mode dispersion
US7561909B1 (en) 2002-09-16 2009-07-14 The United States Of America As Represented By The Department Of Health And Human Services MRI navigator methods and systems
US7993285B2 (en) * 2002-11-05 2011-08-09 Boston Scientific Scimed, Inc. Medical device having flexible distal tip
JP4820567B2 (ja) * 2004-03-26 2011-11-24 株式会社東芝 磁気共鳴イメージング装置及び磁気共鳴信号の収集方法
CN100479748C (zh) * 2004-03-26 2009-04-22 株式会社东芝 核磁共振成像装置
US7064545B2 (en) * 2004-08-30 2006-06-20 General Electric Company Method and apparatus of background suppression in MR imaging using spin locking
US8315450B2 (en) * 2004-11-24 2012-11-20 Wisconsin Alumni Research Foundation Method and system for display of medical image data
JP4699744B2 (ja) * 2004-11-26 2011-06-15 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 Ｍｒｉ装置およびｍｒｉ装置の画質改善方法
US9201129B2 (en) * 2006-09-13 2015-12-01 Kabushiki Kaisha Toshiba Magnetic-resonance image diagnostic apparatus and method of controlling the same
JP4249215B2 (ja) * 2006-10-06 2009-04-02 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
US7459907B2 (en) * 2006-12-28 2008-12-02 Schlumberger Technology Corporation Flow measurement using NMR
EP2148212B1 (en) 2008-07-24 2019-08-21 Toshiba Medical Systems Corporation Magnetic resonance imaging apparatus for contrast enhancement of images
JP5414335B2 (ja) * 2008-07-24 2014-02-12 株式会社東芝 磁気共鳴イメージング装置
WO2014003643A1 (en) * 2012-06-29 2014-01-03 Cr Development Ab Quantification of the relative amount of water in the tissue microcapillary network
WO2014042026A1 (ja) 2012-09-11 2014-03-20 株式会社 東芝 磁気共鳴イメージング装置及び磁気共鳴イメージング方法
JP6953121B2 (ja) * 2016-09-23 2021-10-27 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
US20250067828A1 (en) * 2023-08-21 2025-02-27 University Of Southern California Interleaved flow-sensitive dephasing (ifsd) for enhanced blood flow suppression and preserved t1-weighted contrast and overall signal intensity in 3d turbo spin-echo imaging

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280244A (en) * 1992-03-19 1994-01-18 General Electric Company Gradient moment nulling in a fast spin echo NMR pulse sequence
JP3276669B2 (ja) * 1992-05-29 2002-04-22 株式会社日立メディコ 磁気共鳴イメージング装置
JPH06133950A (ja) * 1992-10-26 1994-05-17 Toshiba Medical Eng Co Ltd 磁気共鳴撮影方法
JPH06285039A (ja) * 1993-03-31 1994-10-11 Shimadzu Corp Ｍｒイメージング装置
JP3483947B2 (ja) * 1993-10-14 2004-01-06 株式会社東芝 磁気共鳴イメージング装置
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
JP3452400B2 (ja) * 1994-08-02 2003-09-29 株式会社日立メディコ 磁気共鳴イメージング装置
US5592085A (en) * 1994-10-19 1997-01-07 Mayo Foundation For Medical Education And Research MR imaging of synchronous spin motion and strain waves

Also Published As

Publication number Publication date
US6380739B1 (en) 2002-04-30
JP2000201903A (ja) 2000-07-25

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