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Computed tomography with geometrical enlargement.

J C Kurdziel, J Stines, J C Hoeffel

    European Journal of Radiology
    |February 1, 1983
    PubMed
    Summary
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    Third generation computed tomography (CT) scanners use geometrical enlargement for small object scans, improving spatial resolution and reducing radiation dose. This technique is particularly beneficial for pediatric CT examinations.

    Area of Science:

    • Medical Imaging
    • Radiological Physics

    Background:

    • Third generation CT scanners have limitations in scanning small objects.
    • Current methods may not optimize spatial resolution or radiation dose for small samples.

    Purpose of the Study:

    • To introduce and evaluate a geometrical enlargement technique for third generation CT scanners.
    • To improve spatial resolution and reduce radiation dose in small object CT examinations.

    Main Methods:

    • Utilizing geometrical enlargement by adjusting the tube-detector assembly position based on object size.
    • Performing CT examinations on small objects with the modified setup.

    Main Results:

    • Geometrical enlargement effectively addresses the challenge of scanning small objects without using all detectors.

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  • The technique enhances spatial resolution.
  • Tube current and skin dose are significantly reduced.

    • Conclusions:

    • Geometrical enlargement is a valuable technique for third generation CT scanners when examining small objects.
    • This method offers improved image quality and patient safety, especially in pediatric CT.