Question 1

When using a film-screen imaging system, changing from 85 to 70 kVp would result in _____________ density and ____________ contrast.

Accepted Answer

A)  No change in; no change in 
B)  Decreased; increased 
C)  No change in; decreased 
D)  Decreased; decreased B

Question 2

A film-screen image produced using 16 mAs @ 80 kVp has to be repeated because it is too dark.Which of the following exposure factors would be the best choice to correct the problem?

Accepted Answer

A)  4 mAs @ 80 kVp 
B)  8 mAs @ 80 kVp 
C)  8 mAs @ 68 kVp 
D)  16 mAs @ 68 kVp B

Question 3

When using a film-screen imaging system, increasing the central angle would result in _____________ density and ____________ spatial resolution.

Accepted Answer

A)  No change in; no change in 
B)  Decreased; decreased 
C)  No change in; decreased 
D)  Decreased; increased B

Question 4

When using a film-screen imaging system, changing from a 200 to a 400 speed system would result in _____________ density and ____________ spatial resolution.

Accepted Answer

A)  No change in; no change in 
B)  Decreased; increased 
C)  No change in; decreased 
D)  Increased; decreased

Question 5

Using an Agfa digital imaging system, if an image's exposure indicator is 2.3 lgM while the optimal range begins at 2.6 lgM, this means that the IR was ______________ and the exposure to the IR needs to be ___________________ .

Accepted Answer

A)  Underexposed; increased by 30% 
B)  Underexposed; increased by a factor of two 
C)  Overexposed; decreased by 30% 
D)  Overexposed; decreased by a factor of two

Question 6

When using a digital imaging system, changing from 8 $\times$ 10 collimation to 14 $\times$ 17 collimation would result in _____________ brightness and ____________ contrast.

Accepted Answer

A)  No change in; no change in 
B)  Decreased; increased 
C)  No change in; decreased 
D)  Decreased; decreased

Question 7

When using a digital imaging system, changing from 70 to 85 kVp would result in _____________ brightness and ____________ spatial resolution.

Accepted Answer

A)  Increased; no change in 
B)  Decreased; increased 
C)  No change in; decreased 
D)  No change in; no change in

Question 8

Which of the following changes would produce a digital image with decreased brightness?

Accepted Answer

A)  Increased mAs 
B)  Decreased kVp 
C)  Increased patient thickness 
D)  None of the above

Question 9

The visibility of anatomic structures in a radiographic image is determined by:

Accepted Answer

A)  Spatial resolution and image contrast 
B)  Brightness/density and image contrast 
C)  Spatial resolution and brightness/density 
D)  All of the above

Question 10

When using a digital imaging system, changing from 40" SID to 72" SID would result in _____________ brightness and ____________ contrast.

Accepted Answer

A)  No change in; no change in 
B)  Decreased; increased 
C)  No change in; decreased 
D)  Decreased; decreased

Question 11

When using a film-screen imaging system, changing from small to large focal spot size would result in _____________ density and ____________ spatial resolution.

Accepted Answer

A)  No change in; no change in 
B)  Decreased; increased 
C)  No change in; decreased 
D)  Decreased; decreased

Question 12

Using a Konica digital imaging system, if an image's S number is 600 while the optimal range ends at 300, this means that the IR was ______________ and the exposure to the IR needs to be ___________________.

Accepted Answer

A)  Underexposed; doubled 
B)  Under exposed; halved 
C)  Overexposed; doubled 
D)  Overexposed; halved

Question 13

Using a Carestream digital imaging system, if an image's EI number is 1800 while the optimal range ends at 1200, this means that the IR was ______________ and the exposure to the IR needs to be ___________________.

Accepted Answer

A)  Underexposed; doubled 
B)  Underexposed; increased by a factor of four 
C)  Overexposed; halved 
D)  Overexposed; reduced by a factor of four

Question 14

When using a digital imaging system, changing from no grid to an 8:1 ratio grid would result in _____________ brightness and ____________ spatial resolution.

Accepted Answer

A)  Increased; no change in 
B)  Decreased; increased 
C)  No change in; decreased 
D)  No change in; no change in

Exam 9: Image Evaluation

When using a film-screen imaging system, changing from 85 to 70 kVp would result in _ density and contrast.

A film-screen image produced using 16 mAs @ 80 kVp has to be repeated because it is too dark.Which of the following exposure factors would be the best choice to correct the problem?

When using a film-screen imaging system, increasing the central angle would result in _ density and spatial resolution.

When using a film-screen imaging system, changing from a 200 to a 400 speed system would result in _ density and spatial resolution.

Using an Agfa digital imaging system, if an image's exposure indicator is 2.3 lgM while the optimal range begins at 2.6 lgM, this means that the IR was and the exposure to the IR needs to be _____ .

When using a digital imaging system, changing from 8 $\times$ 10 collimation to 14 $\times$ 17 collimation would result in _ brightness and contrast.

When using a digital imaging system, changing from 70 to 85 kVp would result in _ brightness and spatial resolution.

Which of the following changes would produce a digital image with decreased brightness?

The visibility of anatomic structures in a radiographic image is determined by:

When using a digital imaging system, changing from 40" SID to 72" SID would result in _ brightness and contrast.

When using a film-screen imaging system, changing from small to large focal spot size would result in _ density and spatial resolution.

Using a Konica digital imaging system, if an image's S number is 600 while the optimal range ends at 300, this means that the IR was and the exposure to the IR needs to be _____.

Using a Carestream digital imaging system, if an image's EI number is 1800 while the optimal range ends at 1200, this means that the IR was and the exposure to the IR needs to be _____.

When using a digital imaging system, changing from no grid to an 8:1 ratio grid would result in _ brightness and spatial resolution.

Exam 9: Image Evaluation

When using a film-screen imaging system, changing from 85 to 70 kVp would result in _____________ density and ____________ contrast.

A film-screen image produced using 16 mAs @ 80 kVp has to be repeated because it is too dark.Which of the following exposure factors would be the best choice to correct the problem?

When using a film-screen imaging system, increasing the central angle would result in _____________ density and ____________ spatial resolution.

When using a film-screen imaging system, changing from a 200 to a 400 speed system would result in _____________ density and ____________ spatial resolution.

Using an Agfa digital imaging system, if an image's exposure indicator is 2.3 lgM while the optimal range begins at 2.6 lgM, this means that the IR was ______________ and the exposure to the IR needs to be ___________________ .

When using a digital imaging system, changing from 8 ×\times× 10 collimation to 14 ×\times× 17 collimation would result in _____________ brightness and ____________ contrast.

When using a digital imaging system, changing from 70 to 85 kVp would result in _____________ brightness and ____________ spatial resolution.

Which of the following changes would produce a digital image with decreased brightness?

The visibility of anatomic structures in a radiographic image is determined by:

When using a digital imaging system, changing from 40" SID to 72" SID would result in _____________ brightness and ____________ contrast.

When using a film-screen imaging system, changing from small to large focal spot size would result in _____________ density and ____________ spatial resolution.

Using a Konica digital imaging system, if an image's S number is 600 while the optimal range ends at 300, this means that the IR was ______________ and the exposure to the IR needs to be ___________________.

Using a Carestream digital imaging system, if an image's EI number is 1800 while the optimal range ends at 1200, this means that the IR was ______________ and the exposure to the IR needs to be ___________________.

When using a digital imaging system, changing from no grid to an 8:1 ratio grid would result in _____________ brightness and ____________ spatial resolution.

When using a film-screen imaging system, changing from 85 to 70 kVp would result in _ density and contrast.

When using a film-screen imaging system, increasing the central angle would result in _ density and spatial resolution.

When using a film-screen imaging system, changing from a 200 to a 400 speed system would result in _ density and spatial resolution.

Using an Agfa digital imaging system, if an image's exposure indicator is 2.3 lgM while the optimal range begins at 2.6 lgM, this means that the IR was and the exposure to the IR needs to be _____ .

When using a digital imaging system, changing from 8 $\times$ 10 collimation to 14 $\times$ 17 collimation would result in _ brightness and contrast.

When using a digital imaging system, changing from 70 to 85 kVp would result in _ brightness and spatial resolution.

When using a digital imaging system, changing from 40" SID to 72" SID would result in _ brightness and contrast.

When using a film-screen imaging system, changing from small to large focal spot size would result in _ density and spatial resolution.

Using a Konica digital imaging system, if an image's S number is 600 while the optimal range ends at 300, this means that the IR was and the exposure to the IR needs to be _____.

Using a Carestream digital imaging system, if an image's EI number is 1800 while the optimal range ends at 1200, this means that the IR was and the exposure to the IR needs to be _____.

When using a digital imaging system, changing from no grid to an 8:1 ratio grid would result in _ brightness and spatial resolution.