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Metz et al., 1994 - Google Patents

Rapid rotating-frame imaging using an RF pulse train (RIPT)

Metz et al., 1994

Document ID
1776364861445530209
Author
Metz K
Boehmer J
Bowers J
Moore J
Publication year
Publication venue
Journal of Magnetic Resonance, Series B

External Links

Snippet

The rotating-frame imaging (RFI) method has proven useful for measuring the spatial distributions of NMR-visible nuclides without the aid of static magnetic field gradients. However, traditional RFI has several disadvantages, including relatively poor time efficiency …
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Classifications

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    • 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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    • G01R33/5615Echo 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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    • G01R33/565Correction of image distortions, e.g. due to magnetic field inhomogeneities
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    • G01R33/28Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32Excitation or detection systems, e.g. using radio frequency signals
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    • G01F1/708Measuring the time taken to traverse a fixed distance
    • G01F1/716Measuring the time taken to traverse a fixed distance using electron paramagnetic resonance [EPR] or nuclear magnetic resonance [NMR]

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