IL98977A - הדמיית תהודה גרעינית הד-נפיחת המשתמשת בדפקי תדר רדיו ב-081 - Google Patents

הדמיית תהודה גרעינית הד-נפיחת המשתמשת בדפקי תדר רדיו ב-081

Info

Publication number
IL98977A
IL98977A IL9897791A IL9897791A IL98977A IL 98977 A IL98977 A IL 98977A IL 9897791 A IL9897791 A IL 9897791A IL 9897791 A IL9897791 A IL 9897791A IL 98977 A IL98977 A IL 98977A
Authority
IL
Israel
Prior art keywords
pulses
magnetic resonance
gradient
producing
modulated
Prior art date
Application number
IL9897791A
Other languages
English (en)
Other versions
IL98977A0 (en
Original Assignee
British Tech Group
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 British Tech Group filed Critical British Tech Group
Publication of IL98977A0 publication Critical patent/IL98977A0/xx
Publication of IL98977A publication Critical patent/IL98977A/he

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]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
    • F02G1/044—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines having at least two working members, e.g. pistons, delivering power output
    • F02G1/0445—Engine plants with combined cycles, e.g. Vuilleumier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2250/00—Special cycles or special engines
    • F02G2250/18—Vuilleumier cycles
    • 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
    • G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
    • G01R33/482—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a Cartesian trajectory
    • G01R33/4822—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a Cartesian trajectory in three dimensions
    • 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]
    • G01R33/5618—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 both RF and gradient refocusing, e.g. GRASE
IL9897791A 1990-07-31 1991-07-26 הדמיית תהודה גרעינית הד-נפיחת המשתמשת בדפקי תדר רדיו ב-081 IL98977A (he)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909016803A GB9016803D0 (en) 1990-07-31 1990-07-31 Echo-volumar imaging using 180grad rf pulses

Publications (2)

Publication Number Publication Date
IL98977A0 IL98977A0 (en) 1992-07-15
IL98977A true IL98977A (he) 1995-03-30

Family

ID=10679948

Family Applications (1)

Application Number Title Priority Date Filing Date
IL9897791A IL98977A (he) 1990-07-31 1991-07-26 הדמיית תהודה גרעינית הד-נפיחת המשתמשת בדפקי תדר רדיו ב-081

Country Status (7)

Country Link
US (1) US5363036A (he)
EP (1) EP0541616B1 (he)
JP (1) JP2989892B2 (he)
DE (1) DE69131619T2 (he)
GB (2) GB9016803D0 (he)
IL (1) IL98977A (he)
WO (1) WO1992002829A1 (he)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5684398A (en) * 1993-09-02 1997-11-04 Hitachi Medical Corporation Fluid measurement method using nuclear magnetic resonance imaging and apparatus therefor
US5532595A (en) * 1994-04-18 1996-07-02 Picker International, Inc. Three-dimensional spiral echo volume imaging
DE4423806C2 (de) * 1994-07-06 2000-08-24 Siemens Ag Verfahren zur MR-Bildgewinnung mit einer Folge von Einzelmessungen
US5928271A (en) * 1998-02-25 1999-07-27 Medtronic, Inc. Atrial anti-arrhythmia pacemaker and method using high rate atrial and backup ventricular pacing
DE102014203432B3 (de) * 2014-02-26 2015-07-30 Siemens Aktiengesellschaft Magnetresonanz-Spektroskopie mit Phasenrotation
US11857306B1 (en) 2018-06-15 2024-01-02 Unm Rainforest Innovations Concurrent MRSI and fMRI

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431968A (en) * 1982-04-05 1984-02-14 General Electric Company Method of three-dimensional NMR imaging using selective excitation
US4716369A (en) * 1984-06-20 1987-12-29 Hitachi, Ltd. High speed imaging method with three-dimensional NMR
DE3434161A1 (de) * 1984-09-18 1986-03-27 Bruker Medizintechnik Gmbh, 7512 Rheinstetten Verfahren zum messen der magnetischen kernresonanz
US4684891A (en) * 1985-07-31 1987-08-04 The Regents Of The University Of California Rapid magnetic resonance imaging using multiple phase encoded spin echoes in each of plural measurement cycles
US4698592A (en) * 1985-08-16 1987-10-06 The Regents Of The University Of California MRI of chemical shift spectra within limited inner volume
JPH0763455B2 (ja) * 1986-03-31 1995-07-12 株式会社東芝 磁気共鳴映像装置
JP2607497B2 (ja) * 1987-01-26 1997-05-07 株式会社東芝 磁気共鳴映像装置
GB8918105D0 (en) * 1989-08-08 1989-09-20 Nat Res Dev Echo planar imaging using 180grad pulses
US5221898A (en) * 1990-11-30 1993-06-22 Hitachi, Ltd. Flow imaging method using an MRI apparatus
US5212448A (en) * 1991-08-09 1993-05-18 General Electric Company Nmr pulse sequence with burst rf excitation pulses having separately controlled phase

Also Published As

Publication number Publication date
GB9116410D0 (en) 1991-09-11
WO1992002829A1 (en) 1992-02-20
IL98977A0 (en) 1992-07-15
JPH06500166A (ja) 1994-01-06
GB2246637A (en) 1992-02-05
GB2246637B (en) 1994-11-23
EP0541616A1 (en) 1993-05-19
JP2989892B2 (ja) 1999-12-13
DE69131619T2 (de) 2000-03-16
US5363036A (en) 1994-11-08
EP0541616B1 (en) 1999-09-15
DE69131619D1 (de) 1999-10-21
GB9016803D0 (en) 1990-09-12

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Legal Events

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