Gyngell et al., 1988 - Google Patents

4703268 Clean multiple echo magnetic resonance imaging using asymmetric sequences

Gyngell et al., 1988

Document ID
5021443880555137685
Author
Gyngell M
Nayler G
Publication year
Publication venue
Magnetic Resonance Imaging

External Links

Continue reading at scholar.google.com (other versions)

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
    • 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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • G01R33/3854—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils means for active and/or passive vibration damping or acoustical noise suppression in gradient magnet coil systems
    • 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
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • 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
    • 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
    • G01R33/285—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00

Similar Documents

Publication Publication Date Title
US6704594B1 (en) Magnetic resonance imaging device
US5235279A (en) MRI using auxiliary insert gradient coil to produce intense auxiliary magnetic gradient pulses
JP3440114B2 (en) Tracking system for monitoring instrument position and orientation using multiple magnetic resonance detection
JP3440113B2 (en) System and method for tracking the position of an instrument by magnetic resonance detection of a sample in the instrument
JP3440112B2 (en) Magnetic resonance tracking system for monitoring instrument position
EP0024640B1 (en) Moving gradient zeugmatography
US6377048B1 (en) Magnetic resonance imaging device for operation in external static magnetic fields
EP1720028B1 (en) Magnetic resonance elastography using multiple drivers
EP0135847B1 (en) Nuclear magnetic resonance imaging using pulse sequences combining selective excitation and driven free precession
US5479925A (en) Magnetic resonance (MR) angiography in a low-field imaging magnet
US4995394A (en) Fast NMR cardiac profile imaging
US6498485B2 (en) Method and apparatus for preventing artifacts due to magnetic field outside of field of view
JP4152440B2 (en) MR imaging device
USRE32712E (en) Moving gradient zeugmatography
EP0097519B1 (en) Nuclear magnetic resonance diagnostic apparatus
JP3342853B2 (en) Magnetic resonance imaging device
US6377837B1 (en) Nuclear magnetic resonance imaging apparatus
KR100559345B1 (en) Magnetic resonance signal acquiring method and apparatus, recording medium and magnetic resonance imaging apparatus
Gyngell et al. 4703268 Clean multiple echo magnetic resonance imaging using asymmetric sequences
JPH0856930A (en) Magnetic resonance image forming device
Taylor 4701952 Frequency attenuation compensated pneumatic headphone and liquid tube audio system for medical use
McDougall et al. 4701736 Magnet assembly having a plurality of nested coaxial coils
US4816764A (en) Method for the identification of nuclear magnetic spectra from spatially selectable regions of an examination subject
Willard et al. 4701711 Nuclear magnetic resonance apparatus with switched attenuator
Loeffler et al. 4703271 NMR tomographic apparatus