Price et al., 1997 - Google Patents

Optimization of the water-PRESS pulse sequence and its integration into pulse sequences for studying biological macromolecules

Price et al., 1997

Document ID
13284254346221452943
Author
Price W
Hayamizu K
Arata Y
Publication year
Publication venue
Journal of Magnetic Resonance

External Links

Snippet

In this paper, the recently developed “Water-PRESS” method of water suppression [WS Price and Y. Arata (1996), J. Magn. Reson. B112, 190] in which homospoil pulses are used to manipulate the effects of radiation damping on the water resonance and thereby …
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    • 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
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    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field
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    • 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]
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    • G01R33/5601—Image 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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    • G01R33/46—NMR spectroscopy
    • G01R33/4616—NMR spectroscopy using specific RF pulses or specific modulation schemes, e.g. stochastic excitation, adiabatic RF pulses, composite pulses, binomial pulses, Shinnar-le-Roux pulses, spectrally selective pulses not being used for spatial selection
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    • 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
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    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
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    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
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    • G01R33/446—Multifrequency selective RF pulses, e.g. multinuclear acquisition mode

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