EXERCISES, LESSON 1
INSTRUCTIONS: Answer the following exercises by marking the lettered response that
best answers the question or best completes the incomplete statement.
After you have completed all the exercises, turn to "Solutions to Exercises" at the
end of the lesson and check your answers. For each exercise answered incorrectly,
reread the material referenced with the solution.
Contrast media are useful where photon absorptions among structures is:
Radiopaque contrast media are called __________, and radiolucent contrast
media are called__________.
a. Positive, negative.
b. Weak, strong.
d. Light, heavy.
A good contrast medium must change photon absorption and yet be as
__________ as possible.