Special Applications of Nuclear and Wave Phenomena — Quiz
Question 17 • Physics
Sally is concerned about the X-ray images her dentist plans to take of her teeth. She has read that X-rays can cause tissue effects, such as skin reddening and hair loss. Which statement would best inform Sally of the level of risk?
Answer
A
The dentist uses X-ray radiography, which takes too short a time to cause those problems.
B
The dentist uses X-ray fluoroscopy, which can take enough time to cause those problems.
C
The dentist uses X-ray radiography, which can take enough time to cause those problems.
D
The dentist uses X-ray fluoroscopy, which takes too short a time to cause those problems.
Explanation
Dental X-rays are made using radiography, which captures an image with a brief exposure. Tissue effects such as skin reddening and hair loss generally require a much larger radiation dose than a routine dental X-ray provides. Therefore, the best statement is that the dentist uses X-ray radiography, which takes too short a time to cause those problems.
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