The Use of Contrast Material as a Means for Visualizing

Multiple Choice

The use of contrast material as a means for visualizing human anatomy has a long history.Regardless of the type of contrast media,the purpose for using contrast media is to

A) take advantage of Compton interactions and increase the amount of remnant radiation.
B) enhance the low subject contrast of anatomic structures.
C) improve gastric motility and digestion.
D) improve the contrast between high contrast structures such as bone.