DE69624303D1 - Ein Verfahren und Gerät für die Bilderzeugung durch magnetische Resonanz - Google Patents
Ein Verfahren und Gerät für die Bilderzeugung durch magnetische ResonanzInfo
- Publication number
- DE69624303D1 DE69624303D1 DE69624303T DE69624303T DE69624303D1 DE 69624303 D1 DE69624303 D1 DE 69624303D1 DE 69624303 T DE69624303 T DE 69624303T DE 69624303 T DE69624303 T DE 69624303T DE 69624303 D1 DE69624303 D1 DE 69624303D1
- 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
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)
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 true DE69624303D1 (de) | 2002-11-21 |
DE69624303T2 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) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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)
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 |
-
1995
- 1995-08-17 US US08/516,386 patent/US5602476A/en not_active Expired - Fee Related
-
1996
- 1996-07-29 DE DE69624303T patent/DE69624303T2/de not_active Expired - Fee Related
- 1996-07-29 EP EP96305556A patent/EP0759562B1/de not_active Expired - Lifetime
- 1996-08-13 JP JP8231457A patent/JPH0956696A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0759562A2 (de) | 1997-02-26 |
US5602476A (en) | 1997-02-11 |
EP0759562B1 (de) | 2002-10-16 |
EP0759562A3 (de) | 1997-04-16 |
JPH0956696A (ja) | 1997-03-04 |
DE69624303T2 (de) | 2003-05-22 |
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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 |