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Rotating frame zeugmatography.

D I Hoult

    Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
    |June 25, 1980
    PubMed
    Summary
    This summary is machine-generated.

    High-speed magnetic resonance imaging (MRI) in infants is possible using proton sensitivity. Innovations address bandwidth, recovery time, and gradient challenges for millimetre-resolution imaging in seconds.

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    Area of Science:

    • Medical Imaging
    • Biophysics
    • Magnetic Resonance Imaging

    Background:

    • Proton sensitivity at 5 MHz in infants suggests potential for rapid, high-resolution imaging.
    • Current challenges include limited receiver bandwidth, long pulse recovery times, and high power demands for field gradients.

    Purpose of the Study:

    • To explore solutions for high-speed magnetic resonance imaging (MRI) in infants.
    • To detail advancements in overcoming technical hurdles for rapid, millimetre-resolution imaging.

    Main Methods:

    • Development of a low-noise preamplifier with imaginary gain and Miller feedback to improve bandwidth and recovery times.
    • Design of a novel magnet with rotatable hemispherical windings for generating large gradients.
    • Implementation of rotating frame zeugmatography to eliminate gradient switching.

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    Main Results:

    • The proposed methods aim to resolve bandwidth and recovery time limitations.
    • The new magnet design facilitates the generation of large, rapidly switched field gradients.
    • Rotating frame zeugmatography offers a method to eliminate gradient switching, simplifying the system.

    Conclusions:

    • The ongoing development at the National Institutes of Health (N.I.H.) focuses on a high-speed imaging system.
    • These innovations pave the way for achieving millimetre-resolution MRI scans in infants within seconds.
    • Rotating frame zeugmatography is a key technique for enabling faster MRI acquisition.