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MR imaging using specialized coils.

M R Fisher, B Barker, E G Amparo

    Radiology
    |November 1, 1985
    PubMed
    Summary
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    Specialized magnetic resonance (MR) imaging coils significantly enhance image quality. These advanced coils improve the signal-to-noise ratio (SNR), enabling clearer visualization of small and superficial anatomical structures in clinical settings.

    Area of Science:

    • Radiology
    • Medical Imaging
    • Biophysics

    Background:

    • Magnetic Resonance (MR) imaging is a crucial diagnostic tool.
    • Optimizing signal-to-noise ratio (SNR) is essential for image clarity.
    • Conventional coils may have limitations in imaging small or superficial structures.

    Purpose of the Study:

    • To assess the clinical utility of specialized MR imaging coils.
    • To quantify the signal-to-noise ratio (SNR) improvements offered by these coils.
    • To evaluate the feasibility of using specialized coils in a clinical environment.

    Main Methods:

    • MR imaging was conducted on 48 patients using a 0.35 T superconducting magnet.
    • Evaluated surface coils (transmitting/receiving and receiving-only) and limb coils.

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  • Calculated SNR improvements compared to standard head and body coils.

    • Main Results:

    • Specialized coils demonstrated marked SNR improvements.
    • A 10-cm surface coil showed a 2-fold increase vs. head coil and 4.6-fold vs. body coil.
    • A 20-cm surface coil showed a 2.3-fold increase vs. body coil; limb coils showed 2.8- to 6.4-fold increases.

    Conclusions:

    • Specialized MR coils are clinically feasible and beneficial.
    • These coils significantly improve image SNR.
    • Enhanced SNR facilitates improved imaging of small and superficial anatomical regions.