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Related Experiment Videos

Modulation transfer function of fluorescent screens excited by x-rays

G E Giakoumakis, C D Nomikos, P C Euthymiou

    Physics in Medicine and Biology
    |November 1, 1980
    PubMed
    Summary

    This study calculates the modulation transfer function for X-ray phosphor screens, considering X-ray and light absorption. Scattering of generated light is neglected for compact materials.

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    Y2O2S:Eu phosphor screens evaluation.

    Medical physics·1993
    See all related articles

    Area of Science:

    • Medical Physics
    • Materials Science
    • Optics

    Background:

    • Phosphor screens are crucial for X-ray imaging.
    • Accurate characterization of image quality is essential.
    • Modulation Transfer Function (MTF) quantifies imaging system performance.

    Purpose of the Study:

    • To theoretically calculate the Modulation Transfer Function (MTF) of phosphor screens.
    • To model the effects of X-ray and light absorption within the phosphor material.
    • To establish a theoretical basis for MTF in compact phosphor screens.

    Main Methods:

    • Developed a theoretically based calculation for MTF.
    • Assumed compact phosphor material to neglect light scattering.
    • Incorporated absorption of both X-rays and emitted light.

    Main Results:

    • A theoretical model for MTF was established for phosphor screens.
    • The calculation accounts for fundamental physical processes within the phosphor.
    • The model provides a framework for understanding MTF limitations due to absorption.

    Conclusions:

    • The theoretical calculation provides insight into MTF for X-ray phosphor screens.
    • Absorption significantly influences the modulation transfer function.
    • This work aids in optimizing phosphor screen design for improved X-ray imaging.

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