All of the following are true of ultrasonography EXCEPT:
a. Ultrasonography provides a more definitive type of picture than x-rays.
b. Ultrasonography uses sound waves bounced off the desired structure to form a picture of the organ.
c. Ultrasonography is potentially less damaging than x-rays.
d. Ultrasonography cannot be used during pregnancy because of the embryo's developing eardrums.
Question 2
What is a diagnostic x-ray?
a. Naturally occurring low-level radiation in the body
b. An advanced form of x-ray
c. A flat or two-dimensional picture of a particular body part
d. A useful tool for looking at soft tissue
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