DE69624303T2 - Ein Verfahren und Gerät für die Bilderzeugung durch magnetische Resonanz - Google Patents

Ein Verfahren und Gerät für die Bilderzeugung durch magnetische Resonanz

Info

Publication number
DE69624303T2
DE69624303T2 DE69624303T DE69624303T DE69624303T2 DE 69624303 T2 DE69624303 T2 DE 69624303T2 DE 69624303 T DE69624303 T DE 69624303T DE 69624303 T DE69624303 T DE 69624303T DE 69624303 T2 DE69624303 T2 DE 69624303T2
Authority
DE
Germany
Prior art keywords
magnetic resonance
resonance imaging
imaging
magnetic
resonance
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 - Fee Related
Application number
DE69624303T
Other languages
English (en)
Other versions
DE69624303D1 (de
Inventor
Haiying Liu
Rao P Gullapalli
Mark J Loncar
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.)
Philips Nuclear Medicine Inc
Original Assignee
Marconi Medical Systems Inc
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 Marconi Medical Systems Inc filed Critical Marconi Medical Systems Inc
Publication of DE69624303D1 publication Critical patent/DE69624303D1/de
Application granted granted Critical
Publication of DE69624303T2 publication Critical patent/DE69624303T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01R33/44—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
    • 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]
    • 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
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3621—NMR receivers or demodulators, e.g. preamplifiers, means for frequency modulation of the MR signal using a digital down converter, means for analog to digital conversion [ADC] or for filtering or processing of the MR signal such as bandpass filtering, resampling, decimation or interpolation
    • 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
    • G01R33/543—Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription
    • 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
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (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)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69624303T 1995-08-17 1996-07-29 Ein Verfahren und Gerät für die Bilderzeugung durch magnetische Resonanz Expired - Fee Related DE69624303T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/516,386 US5602476A (en) 1995-08-17 1995-08-17 Ultra-fast MR imaging data acquisition scheme using mixed bandwidth data

Publications (2)

Publication Number Publication Date
DE69624303D1 DE69624303D1 (de) 2002-11-21
DE69624303T2 true DE69624303T2 (de) 2003-05-22

Family

ID=24055348

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69624303T Expired - Fee Related DE69624303T2 (de) 1995-08-17 1996-07-29 Ein Verfahren und Gerät für die Bilderzeugung durch magnetische Resonanz

Country Status (4)

Country Link
US (1) US5602476A (de)
EP (1) EP0759562B1 (de)
JP (1) JPH0956696A (de)
DE (1) DE69624303T2 (de)

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* Cited by examiner, † Cited by third party
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JP3496898B2 (ja) * 1995-03-03 2004-02-16 株式会社日立メディコ 核磁気共鳴撮影装置
US6178271B1 (en) 1996-04-29 2001-01-23 The Mclean Hospital Corporation Methods and systems for registering image data
US5850486A (en) * 1996-04-29 1998-12-15 The Mclean Hospital Corporation Registration of image data
US6114853A (en) * 1997-06-25 2000-09-05 Toshiba America Mri, Inc. NMR methods for qualification of sequence-induced B0 oscillation and correction of the resultant image artifacts in MRI
US6339626B1 (en) * 1998-03-16 2002-01-15 Ge Medical Systems Global Technology Company, Llc MRI system with fractional decimation of acquired data
US6181832B1 (en) 1998-04-17 2001-01-30 Mclean Hospital Corporation Methods and systems for removing artifacts introduced by image registration
US6239598B1 (en) 1998-05-08 2001-05-29 The Uab Reasearch Foundation Process for rapid sample trajectory calibration for magnetic resonance imaging
US6263228B1 (en) * 1998-08-27 2001-07-17 Toshiba America, Mri, Inc. Method and apparatus for providing separate water-dominant and fat-dominant images from single scan single point dixon MRI sequences
US6255820B1 (en) * 1999-03-08 2001-07-03 Picker International, Inc. Variable bandwidth MRI data collection
US6252400B1 (en) 1999-03-18 2001-06-26 Picker International, Inc. Spin and field echo (safe) FSE
JP2001000415A (ja) * 1999-06-24 2001-01-09 Ge Yokogawa Medical Systems Ltd 勾配磁場印加方法および装置並びに磁気共鳴撮像装置
US6603990B2 (en) 2001-08-10 2003-08-05 Toshiba America Mri, Inc. Separation and identification of water and fat MR images at mid-field strength with reduced T2/T2* weighting
DE10157540B4 (de) * 2001-11-23 2007-01-11 Siemens Ag Doppelechosequenz und Magnetresonanzgerät zum Ausführen der Doppelechosequenz und Verwendung desselben in der Orthopädie
US6933720B2 (en) 2001-12-11 2005-08-23 Toshiba America Mri, Inc. Sequence preconditioning for ultra-fast magnetic resonance imaging
US6879156B1 (en) * 2002-05-17 2005-04-12 The General Hospital Corporation Reducing dead-time effect in MRI projection
US7378844B2 (en) * 2004-09-30 2008-05-27 General Electric Company Magnetic resonance system, receiver & method of generating detecting and digitizing analog MR signals solely within the MR shielded environment
CN100365425C (zh) * 2005-04-30 2008-01-30 华东师范大学 一种具有选择性激发的正负相位组合脉冲的实现方法
FR2898685A1 (fr) * 2006-03-14 2007-09-21 Centre Nat Rech Scient Traitement d'image obtenue par resonance magnetique a bandes passantes variables
CN102141603B (zh) * 2010-01-28 2013-07-31 西门子(深圳)磁共振有限公司 一种平面回波成像方法和系统
CN103257333B (zh) * 2012-02-17 2016-04-13 西门子(深圳)磁共振有限公司 一种磁共振成像中的水脂分离成像方法及装置
DE102012220449B4 (de) * 2012-11-09 2014-08-21 Siemens Aktiengesellschaft Verfahren und Magnetresonanzgerät zur automatisierten Klassifizierung einer Bildeigenschaft eines Magnetresonanzbildes
CN111210484B (zh) * 2019-12-31 2024-04-19 上海联影智能医疗科技有限公司 医学图像生成方法、模型训练方法、装置及介质

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168228A (en) * 1987-05-14 1992-12-01 National Researh Development Corporation Echo planar imaging systems
US4833407A (en) * 1987-06-24 1989-05-23 Picker International, Inc. Scan time reduction using conjugate symmetry and recalled echo
US4792758A (en) * 1987-11-19 1988-12-20 Picker International, Inc. Steady-state echo magnetic resonance imaging
US4859945A (en) * 1988-05-03 1989-08-22 Elscint Ltd. Optimized signal to noise ratio
US4901020A (en) * 1988-05-30 1990-02-13 Siemens Aktiengesellschaft Pulse sequence for operating a nuclear magnetic resonance tomography apparatus for producing images with different T2 contrast
JPH0252639A (ja) * 1988-08-15 1990-02-22 Toshiba Corp 磁気共鳴イメージング装置
US4952876A (en) * 1988-11-23 1990-08-28 General Electric Company Variable bandwidth multiecho NMR imaging
US4896113A (en) * 1988-11-25 1990-01-23 General Electric Company Use of repeated gradient echoes for noise reduction and improved NMR imaging
JP2777155B2 (ja) * 1988-11-30 1998-07-16 株式会社東芝 磁気共鳴映像装置
US4959611A (en) * 1989-06-29 1990-09-25 Picker International, Inc. Out-of-slice artifact reduction technique for magnetic resonance imagers
DE4024164A1 (de) * 1989-08-11 1991-02-14 Siemens Ag Verfahren zur verbesserung des signal-rausch-verhaeltnisses bei einem kernspin-tomographiegeraet
US5168226A (en) * 1991-05-22 1992-12-01 General Electric Acquisition of multiple images in fast spin echo nmr scans
US5270654A (en) * 1991-07-05 1993-12-14 Feinberg David A Ultra-fast multi-section MRI using gradient and spin echo (grase) imaging
US5189371A (en) * 1991-08-08 1993-02-23 The Board Of Trustees Of The Leland Stanford Junior University Method and means for magnetic resonance imaging and spectroscopy using two-dimensional selective adiabatic PI pulses
US5348011A (en) * 1991-11-14 1994-09-20 Picker International, Inc. Shared excitation phase encode grouping for improved throughput cardiac gated MRI cine imaging
US5311133A (en) * 1992-10-05 1994-05-10 Picker International, Inc. Concurrent generation of multiple images in fast (TR<T2) scanning sequences

Also Published As

Publication number Publication date
EP0759562B1 (de) 2002-10-16
DE69624303D1 (de) 2002-11-21
EP0759562A2 (de) 1997-02-26
US5602476A (en) 1997-02-11
EP0759562A3 (de) 1997-04-16
JPH0956696A (ja) 1997-03-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee