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Fourier imaging using rf phase encoding.

A A Maudsley

    Magnetic Resonance in Medicine
    |October 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    This study reviews Fourier imaging techniques and presents a general theory of phase encoding. A novel radiofrequency phase encoding method is introduced for enhanced spatial and spectral discrimination in NMR imaging, particularly for short T2 signals.

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    Area of Science:

    • Nuclear Magnetic Resonance (NMR) Spectroscopy and Imaging
    • Magnetic Resonance Imaging (MRI) Physics

    Background:

    • Fourier imaging methods utilize NMR signal amplitudes and phases across multiple acquisitions for information encoding.
    • Existing techniques for NMR signal encoding are reviewed, establishing a foundation for advanced methods.

    Purpose of the Study:

    • To present a general theory of phase encoding in NMR imaging.
    • To introduce and describe a novel radiofrequency (RF) phase encoding method.
    • To demonstrate the application of this method for imaging short T2 signals.

    Main Methods:

    • Review of established Fourier imaging encoding techniques.
    • Development of a general theory for phase encoding.
    • Implementation of RF phase encoding using tailored excitation or specialized RF gradient coils.

    Related Experiment Videos

  • Integration of RF phase encoding within excitation or refocusing pulses.

    • Main Results:

    • A comprehensive theory of phase encoding is presented.
    • Radiofrequency phase encoding is demonstrated as a viable method for spatial and spectral discrimination.
    • The proposed method enables Fourier imaging of signals with short T2 relaxation times.

    Conclusions:

    • RF phase encoding offers a versatile approach for enhancing NMR imaging capabilities.
    • This technique can be combined with other imaging strategies for improved performance.
    • The method is particularly effective for overcoming challenges in imaging short T2 tissues or materials.