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Multiple chemical shift selective (CHESS) MR imaging using stimulated echoes.

D Matthaei, A Haase, J Frahm

    Radiology
    |September 1, 1986
    PubMed
    Summary
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    Stimulated echo acquisition mode (STEAM) magnetic resonance (MR) imaging offers a new tool for multiparametric studies. The chemical shift selective (CHESS) STEAM technique provides improved spectral resolution for medical imaging applications.

    Area of Science:

    • Medical Imaging
    • Magnetic Resonance Imaging
    • Spectroscopy

    Background:

    • Stimulated Echo Acquisition Mode (STEAM) magnetic resonance (MR) imaging is emerging as a valuable technique.
    • Multiparametric MR imaging studies benefit from advanced acquisition methods.
    • Chemical Shift Selective (CHESS) techniques enhance spectral information.

    Purpose of the Study:

    • To report applications of the CHESS STEAM technique for multiparametric MR imaging.
    • To evaluate the performance of CHESS STEAM on a 2.0-T whole-body MR system.
    • To demonstrate the acquisition of contiguous cross-sectional images of the head and pelvis.

    Main Methods:

    • Utilized a 2.0-T whole-body MR imaging system.
    • Employed the Chemical Shift Selective (CHESS) STEAM technique.

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  • Acquired a series of contiguous cross-sectional images.

    • Main Results:

    • Achieved improved spectral resolution dependent on static magnetic field homogeneity.
    • Demonstrated selective excitation of desired components, avoiding elimination of unwanted ones.
    • Showcased routine applicability without complex CHESS pulse adjustments.

    Conclusions:

    • CHESS STEAM is a promising technique for multiparametric MR imaging.
    • The method offers enhanced spectral resolution suitable for medical applications.
    • Simplified adjustments make CHESS STEAM practical for routine clinical use.