Question

question 9 of 10
which two statements describe how ultrasound technology produces an image of part of the body?
a. low - frequency sound waves are reflected by tissues in the body.
b. high - frequency sound waves are reflected by tissues in the body.
c. body tissues absorb high - frequency sound waves, producing an image.
d. the amount of time it takes for a wave to return can be used to create an image.

Explanation:

Ultrasound uses high - frequency (not low - frequency) sound waves. These waves are reflected by body tissues. The time taken for the reflected waves to return is used to construct an image (not absorption of waves to produce an image directly). So, statements B and D are correct.

Answer:

B. High - frequency sound waves are reflected by tissues in the body; D. The amount of time it takes for a wave to return can be used to create an image.