GB2279755B - Improvements in and relating to magnetic resonance imaging - Google Patents

Improvements in and relating to magnetic resonance imaging

Info

Publication number
GB2279755B
GB2279755B GB9414531A GB9414531A GB2279755B GB 2279755 B GB2279755 B GB 2279755B GB 9414531 A GB9414531 A GB 9414531A GB 9414531 A GB9414531 A GB 9414531A GB 2279755 B GB2279755 B GB 2279755B
Authority
GB
United Kingdom
Prior art keywords
relating
magnetic resonance
resonance imaging
imaging
magnetic
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
GB9414531A
Other versions
GB2279755A (en
GB9414531D0 (en
Inventor
Gosta Jakob Ehnholm
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.)
Instrumentarium Oyj
Original Assignee
Instrumentarium Oyj
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
Priority claimed from GB909024528A external-priority patent/GB9024528D0/en
Application filed by Instrumentarium Oyj filed Critical Instrumentarium Oyj
Priority to GB9414531A priority Critical patent/GB2279755B/en
Publication of GB9414531D0 publication Critical patent/GB9414531D0/en
Publication of GB2279755A publication Critical patent/GB2279755A/en
Application granted granted Critical
Publication of GB2279755B publication Critical patent/GB2279755B/en
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
    • G01R33/62—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using double resonance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00—Preparations for testing in vivo
    • A61K49/06—Nuclear magnetic resonance [NMR] contrast preparations; Magnetic resonance imaging [MRI] contrast preparations
    • 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
    • G01R33/281—Means for the use of in vitro contrast agents
    • 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
    • G01R33/563—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

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Epidemiology (AREA)
  • General Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB9414531A 1990-11-12 1991-11-08 Improvements in and relating to magnetic resonance imaging Expired - Fee Related GB2279755B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9414531A GB2279755B (en) 1990-11-12 1991-11-08 Improvements in and relating to magnetic resonance imaging

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909024528A GB9024528D0 (en) 1990-11-12 1990-11-12 Improvements in and relating to magnetic resonance imaging
GB9123731A GB2252245B (en) 1990-11-12 1991-11-08 Improvements in and relating to magnetic resonance imaging
GB9414531A GB2279755B (en) 1990-11-12 1991-11-08 Improvements in and relating to magnetic resonance imaging

Publications (3)

Publication Number Publication Date
GB9414531D0 GB9414531D0 (en) 1994-09-07
GB2279755A GB2279755A (en) 1995-01-11
GB2279755B true GB2279755B (en) 1995-05-31

Family

ID=26297938

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9414531A Expired - Fee Related GB2279755B (en) 1990-11-12 1991-11-08 Improvements in and relating to magnetic resonance imaging

Country Status (1)

Country Link
GB (1) GB2279755B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0006207D0 (en) 2000-03-16 2000-05-03 Picker Nordstar Oy Nuclear magnetic resonance apparatus and method
AU2003904264A0 (en) * 2003-08-11 2003-08-28 Brain Research Institute Apparatus and method for direct detection of electrical activity of electrically excitable tissues in biological organisms

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719425A (en) * 1986-04-15 1988-01-12 Scientific Innovations, Inc. NMR imaging method and apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719425A (en) * 1986-04-15 1988-01-12 Scientific Innovations, Inc. NMR imaging method and apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEE Conf. Pub. 257, pp 143-147, 1985 *

Also Published As

Publication number Publication date
GB2279755A (en) 1995-01-11
GB9414531D0 (en) 1994-09-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee