Question 1

Which grid design is manufactured to match the divergence of the x-ray beam?

Accepted Answer

A)  The parallel grid 
B)  The crossed grid 
C)  The reciprocating grid 
D)  The focused grid 
A)  The parallel grid 
B)  The crossed grid 
C)  The reciprocating grid 
D)  The focused grid

Question 2

The number of lead strips per inch in a grid is a measure of:

Accepted Answer

A)  grid selectivity. 
B)  grid ratio. 
C)  grid frequency. 
D)  contrast improvement number. 
A)  grid selectivity. 
B)  grid ratio. 
C)  grid frequency. 
D)  contrast improvement number.

Question 3

As collimation decreases,exposure to the IR increases.

Accepted Answer

A) True 
 B)False

Question 4

Changing from an 8:1 grid to a 12:1 grid,along with making the appropriate adjustments,will result in:
1)Increased patient dose
2)An image with increased contrast
3)Using more mAs

Accepted Answer

A)  1 and 2 only 
B)  1 and 3 only 
C)  2 and 3 only 
D)  1, 2, and 3 
A)  1 and 2 only 
B)  1 and 3 only 
C)  2 and 3 only 
D)  1, 2, and 3

Question 5

Grid ratio can be expressed mathematically as:

Accepted Answer

A)  thickness of lead strips divided by distance between them. 
B)  height of lead strips divided by distance between them. 
C)  height of lead strips divided by thickness of lead strips. 
D)  length of lead strips divided by distance between them. 
A)  thickness of lead strips divided by distance between them. 
B)  height of lead strips divided by distance between them. 
C)  height of lead strips divided by thickness of lead strips. 
D)  length of lead strips divided by distance between them.

Question 6

When using a digital flat-panel detector:

Accepted Answer

A)  the x-ray beam will automatically collimate to the appropriate size for the part. 
B)  the entire detector should be exposed. 
C)  the radiographer must adjust the collimator to the area of interest. 
D)  A and C. 
A)  the x-ray beam will automatically collimate to the appropriate size for the part. 
B)  the entire detector should be exposed. 
C)  the radiographer must adjust the collimator to the area of interest. 
D)  A and C.

Question 7

Which of the following statements is true?

Accepted Answer

A)  A high ratio grid prevents the production of scatter better than a low ratio grid. 
B)  A low ratio grid is more effective at removing scatter than a high ratio grid. 
C)  As grid ratio increases, the removal of scatter increases. 
D)  High ratio grids are less effective at removing scatter than low ratio grids. 
A)  A high ratio grid prevents the production of scatter better than a low ratio grid. 
B)  A low ratio grid is more effective at removing scatter than a high ratio grid. 
C)  As grid ratio increases, the removal of scatter increases. 
D)  High ratio grids are less effective at removing scatter than low ratio grids.

Question 8

The only type of grid cutoff that occurs with both focused and parallel grids is due to:

Accepted Answer

A)  using a focused grid upside down. 
B)  off-center misalignment. 
C)  off-focus misalignment. 
D)  off-level misalignment. 
A)  using a focused grid upside down. 
B)  off-center misalignment. 
C)  off-focus misalignment. 
D)  off-level misalignment.

Question 9

Which of the following beam-restricting devices is best at limiting unsharpness surrounding the radiographic image?

Accepted Answer

A)  Collimator 
B)  Cylinder cone 
C)  Aperture diaphragm 
D)  Focused grid 
A)  Collimator 
B)  Cylinder cone 
C)  Aperture diaphragm 
D)  Focused grid

Question 10

An aperture diaphragm with an attached elongated tube is a(n):

Accepted Answer

A)  collimator. 
B)  aperture diaphragm. 
C)  cone. 
D)  cylinder. 
A)  collimator. 
B)  aperture diaphragm. 
C)  cone. 
D)  cylinder.

Question 11

Which of the following is not a way to reduce the production of scatter radiation?

Accepted Answer

A)  Reduce the exposure field size. 
B)  Reduce the tissue thickness. 
C)  Increase the grid ratio. 
D)  Ask a patient with a large abdomen to lie prone instead of supine. 
A)  Reduce the exposure field size. 
B)  Reduce the tissue thickness. 
C)  Increase the grid ratio. 
D)  Ask a patient with a large abdomen to lie prone instead of supine.

Question 12

The recommended SIDs that can be used with a focused grid describe the:

Accepted Answer

A)  focal distance. 
B)  convergent point. 
C)  focal range. 
D)  convergent line. 
A)  focal distance. 
B)  convergent point. 
C)  focal range. 
D)  convergent line.

Question 13

Due to increased potential grid cutoff,which would be the most challenging grid to use?

Accepted Answer

A)  Focused linear grid 
B)  Parallel linear grid 
C)  Cross-hatched grid 
D)  Reciprocating grid 
A)  Focused linear grid 
B)  Parallel linear grid 
C)  Cross-hatched grid 
D)  Reciprocating grid

Question 14

Which of the following are tools that the radiographer can use to limit scatter radiation?

Accepted Answer

A)  Beam-restricting devices 
B)  Radiographic grids 
C)  Digital imaging plate 
D)  A and B 
E)  B and C 
A)  Beam-restricting devices 
B)  Radiographic grids 
C)  Digital imaging plate 
D)  A and B 
E)  B and C

Question 15

If the height of the grid strip is 16 mm,the distance between the strips is 2 mm,and the strip is 0.3 mm thick,what is the grid ratio?

Accepted Answer

A)  8:1 
B)  10:1 
C)  12:1 
D)  16:1 
A)  8:1 
B)  10:1 
C)  12:1 
D)  16:1

Which grid design is manufactured to match the divergence of the x-ray beam?

The number of lead strips per inch in a grid is a measure of:

As collimation decreases,exposure to the IR increases.

Changing from an 8:1 grid to a 12:1 grid,along with making the appropriate adjustments,will result in: 1)Increased patient dose 2)An image with increased contrast 3)Using more mAs

Grid ratio can be expressed mathematically as:

When using a digital flat-panel detector:

Which of the following statements is true?

The only type of grid cutoff that occurs with both focused and parallel grids is due to:

Which of the following beam-restricting devices is best at limiting unsharpness surrounding the radiographic image?

An aperture diaphragm with an attached elongated tube is a(n):

Which of the following is not a way to reduce the production of scatter radiation?

The recommended SIDs that can be used with a focused grid describe the:

Due to increased potential grid cutoff,which would be the most challenging grid to use?

Which of the following are tools that the radiographer can use to limit scatter radiation?

If the height of the grid strip is 16 mm,the distance between the strips is 2 mm,and the strip is 0.3 mm thick,what is the grid ratio?

Radiation and Its Discovery

The X-Ray Beam

Image Formation and Radiographic Quality

Digital Imaging

Film-Screen Imaging

Exposure Technique Factors

Exposure Technique Selection

Image Evaluation

Dynamic Imaging: Fluoroscopy

Filters

Exam 7: Scatter Control

Which grid design is manufactured to match the divergence of the x-ray beam?

The number of lead strips per inch in a grid is a measure of:

As collimation decreases,exposure to the IR increases.

Changing from an 8:1 grid to a 12:1 grid,along with making the appropriate adjustments,will result in: 1)Increased patient dose 2)An image with increased contrast 3)Using more mAs

Grid ratio can be expressed mathematically as:

When using a digital flat-panel detector:

Which of the following statements is true?

The only type of grid cutoff that occurs with both focused and parallel grids is due to:

Which of the following beam-restricting devices is best at limiting unsharpness surrounding the radiographic image?

An aperture diaphragm with an attached elongated tube is a(n):

Which of the following is not a way to reduce the production of scatter radiation?

The recommended SIDs that can be used with a focused grid describe the:

Due to increased potential grid cutoff,which would be the most challenging grid to use?

Which of the following are tools that the radiographer can use to limit scatter radiation?

If the height of the grid strip is 16 mm,the distance between the strips is 2 mm,and the strip is 0.3 mm thick,what is the grid ratio?

Radiation and Its Discovery

The X-Ray Beam

Image Formation and Radiographic Quality

Digital Imaging

Film-Screen Imaging

Exposure Technique Factors

Exposure Technique Selection

Image Evaluation

Dynamic Imaging: Fluoroscopy

Filters