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Related Experiment Video

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In vitro comparison between the image obtained using PSP plates and Kodak E-speed films.

R Petel, L Yaroslavsky, I Kaffe

    Refu'At Ha-Peh Veha-Shinayim (1993)
    |September 16, 2014
    PubMed
    Summary

    The Orex phosphor plate (PSP) digital radiography system offers good image quality and diagnostic value, comparable to traditional E-speed films, with reduced radiation exposure.

    Area of Science:

    • Dental Radiology
    • Digital Imaging Technology

    Background:

    • Traditional film-based radiography has been the standard for intra-oral imaging.
    • Advancements in digital radiography systems, such as phosphor plate (PSP) technology, offer potential benefits in image quality, radiation dose, and diagnostic efficiency.

    Purpose of the Study:

    • To compare the Orex PSP digital radiography system with Kodak Ultra speed films.
    • Evaluation focused on image quality, radiation dosage, and diagnostic value for intra-oral radiography.

    Main Methods:

    • Physical image quality was assessed using an aluminum step-wedge and dosimeter for radiation measurement.
    • Unexposed films and PSP plates were analyzed for fog and base levels.
    • An in vitro model with artificial approximal lesions (0.25-1.00 mm depth) in premolars and molars was used for radiographic evaluation.

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  • Eight experienced clinicians subjectively evaluated radiographs for lesion detection and size.

    • Main Results:

    • Both systems demonstrated similar relative contrast.
    • The PSP system exhibited lower resolving power compared to E-speed film.
    • Subjective evaluation showed no significant difference in lesion detection between the two methods, except for teeth without lesions where analog film was more accurate.

    Conclusions:

    • The Orex PSP system provides acceptable image quality and diagnostic information.
    • This digital system allows for reduced radiation exposure compared to E-speed film.