Deck 10: Outcomes Assessment of Radiographic Images

Question 1

Which of the following can occur as a result of a double set of grid lines?

A)Grid misalignment
B)Film fog
C)Static artifacts
D)Moiré effect

Answer 1

D

Question 2

Patient motion during exposure results in _____ artifact.

A)a processing
B)an exposure
C)a handling
D)no

Answer 2

B

Question 3

Which of the following will run in the same direction as that of film travel?

A)Pi lines
B)Hesitation lines
C)Guide shoe marks
D)All of the above

Answer 3

C

Question 4

A chemical fog artifact

A)is an exposure artifact.
B)appears as streaks.
C)results in lower contrast.
D)results in lower optical density.

Question 5

Data for determining repeat rates should include at least ____ patients to obtain a statistical sample large enough for valid results.

A)100
B)150
C)250
D)500

Question 6

If residual thiosulfate is not properly removed during washing, the radiograph will

A)be underdeveloped.
B)be overdeveloped.
C)turn blue.
D)turn brown.

Question 7

The probability of having a disease given a positive test result is known as

A)accuracy.
B)specificity.
C)positive predictive value.
D)negative predictive value.

Question 8

The true positive fraction is referred to as

A)accuracy.
B)sensitivity.
C)specificity.
D)none of the above.

Question 9

Pi lines are so named because they

A)occur at regular intervals.
B)occur on the finished radiograph.
C)appear as a section of pie.
D)None of the above are correct.

Question 10

Wet pressure sensitization would be classified as _____ artifact.

A)an exposure
B)a processing
C)a handling
D)no