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Chemical-shift imaging.

D N Guilfoyle, P Mansfield

    Magnetic Resonance in Medicine
    |October 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Echo-planar shift mapping (EPSM) provides rapid chemical-shift spectra within seconds. This echo-planar imaging variant is effective for proton and fluorine measurements and analyzing magnetic field variations.

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    Area of Science:

    • Magnetic Resonance Imaging
    • Spectroscopy
    • Medical Physics

    Background:

    • Echo-planar imaging (EPI) is a rapid MRI technique.
    • Chemical-shift information is crucial for tissue characterization.
    • Accurate mapping of magnetic field inhomogeneities is essential for image quality.

    Purpose of the Study:

    • To evaluate the echo-planar shift mapping (EPSM) technique.
    • To assess EPSM's capability for generating chemical-shift spectra.
    • To explore EPSM's utility in studying magnetic field properties.

    Main Methods:

    • Theoretical evaluation using computer simulations.
    • Experimental validation with fluorine resonances in phantoms.
    • Utilizing echo-planar imaging (EPI) principles.

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    Main Results:

    • EPSM successfully produces chemical-shift spectra across a selected slice.
    • Spectra generation is achieved within seconds under adequate signal-to-noise ratio.
    • The technique demonstrates potential for mapping magnetic field inhomogeneities.

    Conclusions:

    • EPSM is a viable technique for rapid chemical-shift spectroscopy.
    • The method shows promise for proton and fluorine measurements.
    • EPSM can aid in the rapid assessment of magnetic field non-uniformities.