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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?
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?
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?
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?
What happens when the thyroid apron or collar are poorly positioned during imaging?
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What is the recommended distance for the operator to stand from the patient when no barrier is available during x-ray exposure?
What is the recommended distance for the operator to stand from the patient when no barrier is available during x-ray exposure?
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