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Related Experiment Videos

Radiation dose in neurological computed tomographic scanning.

R C Whitmore, S C Bushong, B A Archer

    Radiologic Technology
    |July 1, 1979
    PubMed
    Summary

    Patient radiation dose during neurological computed tomography (CT) scans was measured. CT scans deliver significantly lower radiation doses to the head compared to conventional tomography.

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    Area of Science:

    • Radiology
    • Medical Physics
    • Neurological Imaging

    Background:

    • Computed tomography (CT) is a vital diagnostic tool in neurology.
    • Accurate assessment of patient radiation dose is crucial for safety and optimization.
    • Understanding dose distribution is essential for minimizing risks associated with neurological imaging.

    Purpose of the Study:

    • To determine patient radiation dose and dose distribution during neurological CT examinations.
    • To compare radiation doses across different CT scanner models.
    • To evaluate neurological CT doses relative to conventional tomography.

    Main Methods:

    • Utilized five distinct computed tomography scanners for neurological examinations.
    • Measured maximum intracranial doses and doses to the lens of the eye.
    • Compared findings with previously reported doses from other CT studies and conventional tomography.

    Main Results:

    • Maximum intracranial doses varied from 1.17 to 2.67 rads across scanners.
    • Doses to the lens of the eye ranged from 0.23 to 2.81 rads.
    • Neurological CT examinations generally result in radiation doses less than one quarter of those from conventional head tomography.

    Conclusions:

    • Established radiation dose ranges for neurological CT examinations.
    • Demonstrated variability in patient dose depending on the CT scanner used.
    • Confirmed that neurological CT offers a significant dose reduction compared to conventional head tomography.

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