Radiation Hazards Quiz
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Questions and Answers

What is the approximate reduction in collimated area when using a rectangular collimator compared to a round collimator?

  • 75%
  • 33%
  • 50%
  • 66% (correct)

    • In radiation biology, how does the use of a longer source-to-skin distance affect the volume of irradiated tissue compared to a shorter source-to-skin distance?

  • Results in no tissue irradiation
  • Produces a larger volume of irradiated tissue
  • Does not affect the volume of irradiated tissue
  • Produces a smaller volume of irradiated tissue (correct)

    • Why is the use of leaded aprons with thyroid collars especially important for children?

  • Children are more likely to move during exposure
  • Children are more sensitive to radiation than adults (correct)
  • Children have thinner skin than adults
  • Children have higher radiation tolerance

    • What happens when the thyroid apron or collar are poorly positioned during imaging?

    <p>They appear as a cone-shaped radiopaque artifact</p> Signup and view all the answers

    What is the recommended distance for the operator to stand from the patient when no barrier is available during x-ray exposure?

    <p>6 feet</p> Signup and view all the answers

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