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Buxton et al., 1989 - Google Patents

Signal intensity in fast NMR imaging with short repetition times

Buxton et al., 1989

Document ID
16830416648792931321
Author
Buxton R
Fisel C
Chien D
Brady T
Publication year
Publication venue
Journal of Magnetic Resonance (1969)

External Links

Snippet

In fast magnetic resonance imaging with short repetition times and balanced phase- encoding gradients, the steady-state transverse magnetization that develops depends on the local relaxation times in a way that differs substantially from more conventional imaging …
Continue reading at www.sciencedirect.com (other versions)

Classifications

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    • G01R33/20Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48NMR imaging systems
    • G01R33/54Signal processing systems, e.g. using pulse sequences, Generation or control of pulse sequences ; Operator Console
    • G01R33/56Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
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    • G01R33/565Correction of image distortions, e.g. due to magnetic field inhomogeneities
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    • G01R33/5615Echo 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]
    • G01R33/5617Echo 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
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    • G01R33/5601Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution involving use of a contrast agent for contrast manipulation, e.g. a paramagnetic, super-paramagnetic, ferromagnetic or hyperpolarised contrast agent
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    • G01F1/716Measuring the time taken to traverse a fixed distance using electron paramagnetic resonance [EPR] or nuclear magnetic resonance [NMR]

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