Unit 3 Review

Front

If you are performing a hand x-ray and the patient lifts their hand while you are trying to position them, what type of motion is this?

Back

voluntary

Front

If you have a 9-month-old baby, what type of immobilization device could you use to perform an erect chest x-ray?

Back

piggostat

Front

Which of the following positioning aides is radiolucent and will not cause an artifact? sandbag, sponge, shield

Back

sponge

Front

Which beam limiting device is a flat lead with a shape cut into it to reduce the size of the field?

Back

aperture diaphragm

Front

Which beam limiting device has the ability to be telescoped in order to reduce the size or the anatomy being exposed, therefore reducing scatter production?

Back

cone

Front

Proper collimation can reduce patient exposure by approximately:

Back

20-30%

Front

What is post shuttering?

Back

changing the size of the exposed area after it is processed

Front

There are 2 sets of collimator shutters. The upper shutters clean up off focus radiation, the lower shutters __________.

Back

confine the beam

Front

What is the function of PBL?

Back

automatically opens the collimation to the correct size

Front

How does collimation effect scatter?

Back

Increase collimation, you decrease scatter.