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Radiation Risks of CT Scans

Computed tomography (CT) scans are a diagnostic tool that employ X-ray equipment to produce images of the body. CT scans can help identify broken bones, cancer, internal bleeding, blood clots and heart disease. However, CT scans also use radiation, which can pose health risks.

  1. Risks

    • Although exposure to radiation can cause cancer, the health benefits of getting a correct diagnosis are usually far greater than the risks.

    Side Effects

    • The radiation involved in CT scans usually causes no side effects. CT scans are also painless and noninvasive.

    Significance

    • Radiation exposure incurred during a CT scan is approximately equal to the amount of background radiation the average person is exposed to over three to five years.

    Considerations

    • Radiation exposure poses more risks to children and pregnant women. Accordingly, CT scans are not recommended for pregnant women and should only be performed on children in cases of extreme necessity.

    Tracking Exposure

    • Radiologists sometimes consider your past radiation exposure when weighing the risks and benefits of a CT scan. Keeping track of your own X-ray exposure can help you provide your doctors with the necessary information.

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