Question 1

What is the device used to measure radiographic density?

Accepted Answer

A)   Sensitometer
B)   Densitometer
C)   Step wedge
D)   a and c B

Question 2

The steeper the slope of the straight-line region of the sensitometric curve, the higher the contrast of the film.

Accepted Answer

A) True 
 B)False

Question 3

Which portion of the curve should be evaluated to assess the range of exposures over which a film produces diagnostic densities?

Accepted Answer

A)   Toe
B)   Straight-line
C)   Shoulder
D)   a or c

Question 4

Which of the following has an inverse relationship with contrast?

Accepted Answer

A)   Density
B)   Average gradient
C)   Latitude
D)   Speed

Question 5

The measurement of average gradient is the slope of the straight-line portion of the curve between:

Accepted Answer

A)   0.25 and 2.0 OD.
B)   B+F and 2.0 OD.
C)   0.25 and B+F OD.
D)   0.25 plus B+F and 2.0 plus B+F OD.

Question 6

What is the name of the curve associated with film analysis?

Accepted Answer

A)   D log E
B)   Hurter and Driffield
C)   Characteristic
D)   All of the above

Question 7

When evaluating characteristic curves, which of the following best describes the film with the curve furthest to the left?

Accepted Answer

A)   Fastest
B)   Slowest
C)   One with the most latitude
D)   b and c

Question 8

What aspect of a film is being assessed by looking at the amount of exposure required to achieve a density of 1.0 plus B+F?

Accepted Answer

A)   Gamma
B)   Latitude
C)   Speed
D)   Dmax

Question 9

What aspect of the sensitometric curve represents the contrast of a film?

Accepted Answer

A)   Toe
B)   Shoulder
C)   Slope
D)   a and c C

Question 10

What area of the sensitometric curve includes the maximum level of density present on the film?

Accepted Answer

A)   Toe
B)   Shoulder
C)   Slope
D)   b and c

Question 11

The lower the speed exposure point, the faster the film speed.

Accepted Answer

A) True 
 B)False

Question 12

A film with a high average gradient will have:

Accepted Answer

A)   decreased contrast.
B)   increased contrast.
C)   increased latitude.
D)   b and c

Question 13

What aspect of a film does the term gamma describe?

Accepted Answer

A)   Speed
B)   Latitude
C)   Contrast
D)   Base + fog

Question 14

What is measured by comparison of the amount of light transmitted through an area of film with the amount of light incident on that area?

Accepted Answer

A)   Speed point
B)   Gamma
C)   Optical density
D)   Logarithmic scale

Question 15

Why is there always some level of optical density on a radiograph?

Accepted Answer

A)   The film base has a tint added.
B)   The film has some fog present from processing.
C)   There are times when the film has a density of 0.
D)   a and b

Question 16

Which of the following should be evaluated when selecting a radiographic film?

Accepted Answer

A)   Speed
B)   Contrast
C)   Latitude
D)   All of the above

Question 17

Where does the area of the characteristic curve known as a solarization occur?

Accepted Answer

A)   Prior to the shoulder
B)   After the shoulder
C)   Along the slope
D)   Before the toe B

Question 18

The range of exposures that produces optical densities within the straight line region of the sensitometric curve describes:

Accepted Answer

A)   solarization.
B)   exposure latitude.
C)   average gradient.
D)   film contrast.

Question 19

A film that allows 100% of the incident light to be transmitted has a logarithmic value of:

Accepted Answer

A)   0.
B)   10.
C)   50.
D)   100.

Question 20

Which of the following optical densities is used to evaluate film speed?

Accepted Answer

A)   0.3 plus B+F
B)   1.0 plus B+F
C)   2.0 plus B+F
D)   2.5 plus B+F

Exam 9: Sensitometry

What is the device used to measure radiographic density?

Correct AnswerverifiedB

The steeper the slope of the straight-line region of the sensitometric curve, the higher the contrast of the film.

Correct AnswerverifiedShow Answer

Which portion of the curve should be evaluated to assess the range of exposures over which a film produces diagnostic densities?

Correct AnswerverifiedShow Answer

Which of the following has an inverse relationship with contrast?

Correct AnswerverifiedShow Answer

The measurement of average gradient is the slope of the straight-line portion of the curve between:

Correct AnswerverifiedShow Answer

What is the name of the curve associated with film analysis?

Correct AnswerverifiedShow Answer

When evaluating characteristic curves, which of the following best describes the film with the curve furthest to the left?

Correct AnswerverifiedShow Answer

What aspect of a film is being assessed by looking at the amount of exposure required to achieve a density of 1.0 plus B+F?

Correct AnswerverifiedShow Answer

What aspect of the sensitometric curve represents the contrast of a film?

Correct AnswerverifiedC

What area of the sensitometric curve includes the maximum level of density present on the film?

Correct AnswerverifiedShow Answer

The lower the speed exposure point, the faster the film speed.

Correct AnswerverifiedShow Answer

A film with a high average gradient will have:

Correct AnswerverifiedShow Answer

What aspect of a film does the term gamma describe?

Correct AnswerverifiedShow Answer

What is measured by comparison of the amount of light transmitted through an area of film with the amount of light incident on that area?

Correct AnswerverifiedShow Answer

Why is there always some level of optical density on a radiograph?

Correct AnswerverifiedShow Answer

Which of the following should be evaluated when selecting a radiographic film?

Correct AnswerverifiedShow Answer

Where does the area of the characteristic curve known as a solarization occur?

Correct AnswerverifiedB

The range of exposures that produces optical densities within the straight line region of the sensitometric curve describes:

Correct AnswerverifiedShow Answer

A film that allows 100% of the incident light to be transmitted has a logarithmic value of:

Correct AnswerverifiedShow Answer

Which of the following optical densities is used to evaluate film speed?

Correct AnswerverifiedShow Answer

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B

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C

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B

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