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Related Experiment Videos

Patient dosage in computed tomography

E C McCullough, J T Payne

    Radiology
    |November 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    CT scanner radiation doses typically range from 2-10 rads per study. External shielding can significantly reduce secondary radiation exposure to critical organs during CT scans.

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    Area of Science:

    • Medical Physics
    • Radiological Imaging

    Background:

    • Computed Tomography (CT) scans involve radiation exposure.
    • Understanding and mitigating radiation dose is crucial for patient safety.

    Purpose of the Study:

    • To evaluate surface and secondary radiation doses in clinical CT scans.
    • To assess the impact of CT scanner geometry and shielding on radiation exposure.

    Main Methods:

    • Measured maximum surface dosage across various clinical CT scans.
    • Assessed dose values for critical organs from secondary radiation.
    • Quantified radiation dose in the vicinity of CT scanners.

    Main Results:

    • Maximum surface dosage generally ranges from 2-10 rads/study.

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  • CT scanner type did not significantly reduce overall doses.
  • External shielding effectively reduced secondary radiation to organs.
  • Typical doses near scanners were 1-2 mrad/scan at 1 meter.

    • Conclusions:

    • CT radiation doses vary, with potential for higher levels depending on scanner design.
    • External shielding is a key strategy for minimizing secondary radiation risks.
    • Managing radiation exposure in CT imaging requires careful consideration of scanner parameters and protective measures.