DE69321653D1 - Verfahren und Gerät zur Bilderzeugung mittels magnetischer Resonanz - Google Patents
Verfahren und Gerät zur Bilderzeugung mittels magnetischer ResonanzInfo
- Publication number
- DE69321653D1 DE69321653D1 DE69321653T DE69321653T DE69321653D1 DE 69321653 D1 DE69321653 D1 DE 69321653D1 DE 69321653 T DE69321653 T DE 69321653T DE 69321653 T DE69321653 T DE 69321653T DE 69321653 D1 DE69321653 D1 DE 69321653D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic resonance
- resonance imaging
- imaging method
- 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
- 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
- G01R33/44—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
-
- 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
- G01R33/56554—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by acquiring plural, differently encoded echo signals after one RF excitation, e.g. correction for readout gradients of alternating polarity in EPI
Landscapes
- 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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92201512 | 1992-05-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69321653D1 true DE69321653D1 (de) | 1998-11-26 |
DE69321653T2 DE69321653T2 (de) | 1999-05-20 |
Family
ID=8210630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69321653T Expired - Fee Related DE69321653T2 (de) | 1992-05-27 | 1993-05-19 | Verfahren und Gerät zur Bilderzeugung mittels magnetischer Resonanz |
Country Status (3)
Country | Link |
---|---|
US (1) | US5410249A (de) |
JP (1) | JPH06181911A (de) |
DE (1) | DE69321653T2 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5847564A (en) * | 1996-12-23 | 1998-12-08 | Varian Associates, Inc. | Solvent suppression method for LC-NMR and high-resolution-NMR |
JP3028219B2 (ja) | 1998-05-08 | 2000-04-04 | ジーイー横河メディカルシステム株式会社 | Mri装置 |
DE20109058U1 (de) * | 2001-05-31 | 2002-10-10 | Deltamed Gmbh | Vorrichtung zur Behandlung mit magnetischen Feldern |
US6774628B2 (en) * | 2002-01-18 | 2004-08-10 | Schlumberger Technology Corporation | Nuclear magnetic resonance imaging using phase encoding with non-linear gradient fields |
US6518757B1 (en) * | 2002-03-08 | 2003-02-11 | Schlumberger Technology Corporation | Use of CPMG sequences with phase cycled refocusing pulses in inside-out NMR for phase encoded imaging and to eliminate coherent ringing within one scan |
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 |
US9360545B2 (en) * | 2012-06-26 | 2016-06-07 | Siemens Aktiengesellschaft | Magnetic resonance system and operating method for flow artifact reduction in slab selective space imaging |
KR101442619B1 (ko) * | 2012-11-26 | 2014-09-22 | 삼성전자주식회사 | Mri 시스템 및 mri 시스템 진단 방법 |
US9389294B2 (en) * | 2013-03-12 | 2016-07-12 | The Board Of Trustees Of The Leland Stanford Junior University | Distortion-free magnetic resonance imaging near metallic implants |
EP3629335A1 (de) * | 2018-09-26 | 2020-04-01 | Siemens Healthcare GmbH | Verfahren zum automatischen auswählen von bildgebungsparametern für bildgebungsverfahren |
CN112014781B (zh) * | 2020-09-02 | 2021-04-20 | 无锡鸣石峻致医疗科技有限公司 | 一种磁共振回波信号的相位矫正方法、装置、计算机设备及计算机可读存储介质 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3434161A1 (de) * | 1984-09-18 | 1986-03-27 | Bruker Medizintechnik Gmbh, 7512 Rheinstetten | Verfahren zum messen der magnetischen kernresonanz |
JPH0657205B2 (ja) * | 1985-07-11 | 1994-08-03 | 株式会社東芝 | 磁気共鳴イメージング方法および装置 |
US4713615A (en) * | 1985-08-30 | 1987-12-15 | Resonex, Inc. | Quantization error reduction method for phase encode gradient in NMR imaging |
US4714884A (en) * | 1986-06-13 | 1987-12-22 | General Electric Company | Method of eliminating effects of spurious NMR signals caused by imperfect 180 degree RF pulses |
-
1993
- 1993-05-19 DE DE69321653T patent/DE69321653T2/de not_active Expired - Fee Related
- 1993-05-27 US US08/068,817 patent/US5410249A/en not_active Expired - Fee Related
- 1993-05-27 JP JP5148511A patent/JPH06181911A/ja not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US5410249A (en) | 1995-04-25 |
DE69321653T2 (de) | 1999-05-20 |
JPH06181911A (ja) | 1994-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69524290T2 (de) | Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz | |
DE69326202D1 (de) | Verfahren und Gerät zur Kernresonanzabbildung | |
DE69123710T2 (de) | Apparat und Verfahren zur Bilderzeugung mittels magnetischer Resonanz | |
DE69322841D1 (de) | Verfahren und Apparat zur kinematographischen Bilderzeugung mittels magnetischer Resonanz | |
DE68926824D1 (de) | Apparat und Verfahren zur Bilderzeugung mittels magnetischer Resonanz | |
DE69429590D1 (de) | Apparat und Verfahren zur Bilderzeugung mittels magnetischer Resonanz | |
DE69433676D1 (de) | Apparat und Verfahren für magnetische Resonanzuntersuchungen | |
DE69534901D1 (de) | Verfahren und Gerät zur Bilderzeugung durch magnetische Resonanz | |
DE69529667D1 (de) | Verfahren und gerät zur bilderzeugung mit magnetischer resonanz | |
DE69828372D1 (de) | Verfahren und vorrichtung zur bilderzeugung mittels magnetresonanz und ekg-synchronisierung | |
DE69507939T2 (de) | Gerät und Verfahren zur Bilderzeugung durch magnetische Resonanz | |
FI91448B (fi) | Magneettikuvauslaite ja -menetelmä | |
DE69523982D1 (de) | Apparat zur Bilderzeugung mittels magnetischer Resonanz | |
DE69527122T2 (de) | Verfahren und vorrichtung zur bilderzeugung mittels magnetischer resonanz | |
DE69416765T2 (de) | Apparat zur Bilderzeugung mittels magnetischer Resonanz | |
DE69314099T2 (de) | Apparat zur Bilderzeugung mittels magnetischer Resonanz | |
DE69321653T2 (de) | Verfahren und Gerät zur Bilderzeugung mittels magnetischer Resonanz | |
DE69320105D1 (de) | Verfahren und Gerät zur Bilderzeugung mittels magnetischer Resonanz | |
DE69413128D1 (de) | Verfahren und Vorrichtung zur Bilderzeugung mittels magnetischer Resonanz | |
DE69222804D1 (de) | Verfahren und Vorrichtung zur Bilderzeugung mittels magnetischer Resonanz | |
DE69331153D1 (de) | Verfahren und gerät zur bilderzeugung mit magnetischer resonanz | |
DE69732828D1 (de) | Verfahren und gerat zur bilderzeugung mittels magnetischer resonanz | |
DE69317362T2 (de) | Verfahren und Vorrichtung zur Bilderzeugung mittels magnetischer Resonanz | |
DE3855288T2 (de) | Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz | |
DE69215985D1 (de) | Vorrichtung zur Bilderzeugung mittels magnetischer Resonanz |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |