Question 1

Which of the following patient conditions demonstrates low subject contrast?

Accepted Answer

A)  Low fat content 
B)  Dense bone 
C)  Obesity 
D)  Paget's disease 
A)  Low fat content 
B)  Dense bone 
C)  Obesity 
D)  Paget's disease C

Question 2

Exposure indicators
1)are used to create the histogram.
2)denote the quantity of photons that strike the IR.
3)are used to determine dose to the patient.
4)are displayed on the digital image.

Accepted Answer

A)  1 only 
B)  1 and 2 only 
C)  2 and 4 only 
D)  1, 2, and 4 only 
A)  1 only 
B)  1 and 2 only 
C)  2 and 4 only 
D)  1, 2, and 4 only C

Question 3

Histogram analysis errors for digital systems include all of the following except

Accepted Answer

A)  off-centered CR. 
B)  wrong part selection from the workstation menu. 
C)  collimation within 0.5 inch (2.5 cm) of the skin line. 
D)  exposure of less than 30% of the IR. 
A)  off-centered CR. 
B)  wrong part selection from the workstation menu. 
C)  collimation within 0.5 inch (2.5 cm) of the skin line. 
D)  exposure of less than 30% of the IR. D

Question 4

Appropriate scatter radiation control methods include which of the following?
1)Tight collimation
2)Lead masking at the edge of the exposure field
3)Appropriate use of a grid
4)Lower kV settings
5)Using an air gap method

Accepted Answer

A)  1, 2, and 4 only 
B)  2, 3, and 5 only 
C)  1, 2, 3, and 4 only 
D)  1, 2, 3, 4, and 5 
A)  1, 2, and 4 only 
B)  2, 3, and 5 only 
C)  1, 2, 3, and 4 only 
D)  1, 2, 3, 4, and 5

Question 5

The light collected and converted to an electrical signal by the photomultiplier tube (PMT) during CR image sampling is then sent to the _____ to be digitized.

Accepted Answer

A)  ADC (analog-to-digital converter) 
B)  DAC (digital-to-analog converter) 
C)  LUT (lookup table) 
D)  workstation 
A)  ADC (analog-to-digital converter) 
B)  DAC (digital-to-analog converter) 
C)  LUT (lookup table) 
D)  workstation

Question 6

What percentage of kVp adjustment doubles the density on an image?

Accepted Answer

A)  5% 
B)  15% 
C)  30% 
D)  100% 
A)  5% 
B)  15% 
C)  30% 
D)  100%

Question 7

Which of the following patient conditions demonstrates high subject contrast?

Accepted Answer

A)  Fluid retention caused by disease 
B)  High fat content 
C)  Pneumothorax 
D)  Dense bones 
A)  Fluid retention caused by disease 
B)  High fat content 
C)  Pneumothorax 
D)  Dense bones

Question 8

Best practice guidelines for the use of automatic exposure control include all of the following except
1)set the optimum kV for the body part.
2)set the backup timer to 150% to 200% of the expected manual exposure.
3)set the highest mA station for the focal spot size needed.
4)wide collimation will ensure IR coverage.

Accepted Answer

A)  1, 2, and 4 only 
B)  2 and 3 only 
C)  1, 2, and 3 only 
D)  1 and 4 only 
A)  1, 2, and 4 only 
B)  2 and 3 only 
C)  1, 2, and 3 only 
D)  1 and 4 only

Question 9

In what order should the following tasks be performed during a trauma examination?
1)Obtain required projections.
2)Return the patient.
3)Disinfect the equipment, IRs, and positioning devices.
4)Determine the projections that will be needed.
5)Gather and organize the equipment, IR, positioning devices, and other supplies.
6)Process and evaluate the projections.
7)Determine patient mobility, alertness, and ability to follow requests.

Accepted Answer

A)  4, 5, 7, 1, 6, 3, 2 
B)  7, 5, 4, 1, 6, 3, 2 
C)  4, 5, 7, 1, 6, 2, 3 
D)  5, 4, 7, 1, 2, 3, 6 
E)  7, 5, 4, 1, 2, 6, 3 
A)  4, 5, 7, 1, 6, 3, 2 
B)  7, 5, 4, 1, 6, 3, 2 
C)  4, 5, 7, 1, 6, 2, 3 
D)  5, 4, 7, 1, 2, 3, 6 
E)  7, 5, 4, 1, 2, 6, 3

Question 10

Saturation indicates

Accepted Answer

A)  underexposure of the IR. 
B)  overexposure of the IR. 
C)  quantum mottle. 
D)  histogram analysis error. 
A)  underexposure of the IR. 
B)  overexposure of the IR. 
C)  quantum mottle. 
D)  histogram analysis error.

Question 11

To demonstrate long bones with the least amount of distortion and obtain optimal anatomical alignment,
1)align the CR perpendicular to the IR and the long axis of the bone.
2)align the IR parallel to long axis of the bone.
3)use the law of isometry when the long bone is parallel to the IR.
4)use the law of isometry to minimize foreshortening.

Accepted Answer

A)  1 and 2 only 
B)  2 only 
C)  1, 2, and 4 only 
D)  2 and 4 only 
A)  1 and 2 only 
B)  2 only 
C)  1, 2, and 4 only 
D)  2 and 4 only

Question 12

When an image resembles a double exposure, the type of artifact demonstrated is a(n) _____ artifact.

Accepted Answer

A)  aliasing 
B)  grid cutoff 
C)  phantom image 
D)  background fog 
A)  aliasing 
B)  grid cutoff 
C)  phantom image 
D)  background fog

Question 13

An exposure recognition field algorithm is applied to the image data to
1)distinguish the gray shade values inside the exposure field from those on the outside.
2)ensure the histogram has the correct shape.
3)identify the volume of interest before rescaling.
4)identify the volume of interest after rescaling.
5)reshape the histogram.

Accepted Answer

A)  1, 2, and 4 only 
B)  2 and 3 only 
C)  1, 2, and 3 only 
D)  1, 3, and 5 only 
A)  1, 2, and 4 only 
B)  2 and 3 only 
C)  1, 2, and 3 only 
D)  1, 3, and 5 only

Question 14

All of the following statements are true except
1)the movement of an image histogram, left to right, will adjust image brightness.
2)the movement of an image histogram, left to right, will adjust the gray scale.
3)changing the shape of the histogram will affect image contrast.
4)changing the shape of the histogram will change the subject contrast.

Accepted Answer

A)  2 only 
B)  1 and 3 only 
C)  3 only 
D)  2 and 4 only 
A)  2 only 
B)  1 and 3 only 
C)  3 only 
D)  2 and 4 only

Question 15

What is the location on a histogram graph of air/gas?

Accepted Answer

A)  Center 
B)  Far right 
C)  Left 
D)  Right 
A)  Center 
B)  Far right 
C)  Left 
D)  Right

Question 16

The exposure indicator number represents all of the following except the

Accepted Answer

A)  amount of light given off by the imaging plate. 
B)  amount of exposure to the patient. 
C)  amount of exposure to the imaging plate. 
D)  measure of dose to the patient. 
A)  amount of light given off by the imaging plate. 
B)  amount of exposure to the patient. 
C)  amount of exposure to the imaging plate. 
D)  measure of dose to the patient.

Question 17

What is the technical adjustment required with the trauma device of a small to medium plaster cast?

Accepted Answer

A)  +5 kVp or +25%-30% 
B)  +5-7 kVp or +50%-60% mAs 
C)  -15-20 kVp 
D)  +50% mAs 
A)  +5 kVp or +25%-30% 
B)  +5-7 kVp or +50%-60% mAs 
C)  -15-20 kVp 
D)  +50% mAs

Question 18

The anode heel affect
1)should be considered when the structure of interest is more than 43 inches long.
2)is a variation in photon intensity across the exposure field.
3)occurs because the heel of the anode absorbs more photons than the toe.
4)is best used with the thinner body toward the cathode.

Accepted Answer

A)  1 only 
B)  2 and 3 only 
C)  1, 2, and 4 only 
D)  1, 2, 3, and 4 
A)  1 only 
B)  2 and 3 only 
C)  1, 2, and 4 only 
D)  1, 2, 3, and 4

Question 19

What is the technical adjustment required with the patient condition of ascites?

Accepted Answer

A)  +25%-30% mAs 
B)  +5-7 kVp 
C)  -15-20 kVp 
D)  +50% mAs 
A)  +25%-30% mAs 
B)  +5-7 kVp 
C)  -15-20 kVp 
D)  +50% mAs

Question 20

When is the examination or body part selected when using the DR system?

Accepted Answer

A)  After the radiation exposure 
B)  Before the radiation exposure 
C)  At any time during the radiation exposure 
D)  This is not a required procedure. 
A)  After the radiation exposure 
B)  Before the radiation exposure 
C)  At any time during the radiation exposure 
D)  This is not a required procedure.

Which of the following patient conditions demonstrates low subject contrast?

Exposure indicators 1)are used to create the histogram. 2)denote the quantity of photons that strike the IR. 3)are used to determine dose to the patient. 4)are displayed on the digital image.

Histogram analysis errors for digital systems include all of the following except

Appropriate scatter radiation control methods include which of the following? 1)Tight collimation 2)Lead masking at the edge of the exposure field 3)Appropriate use of a grid 4)Lower kV settings 5)Using an air gap method

The light collected and converted to an electrical signal by the photomultiplier tube (PMT) during CR image sampling is then sent to the _____ to be digitized.

What percentage of kVp adjustment doubles the density on an image?

Which of the following patient conditions demonstrates high subject contrast?

Saturation indicates

When an image resembles a double exposure, the type of artifact demonstrated is a(n) _____ artifact.

What is the location on a histogram graph of air/gas?

The exposure indicator number represents all of the following except the

What is the technical adjustment required with the trauma device of a small to medium plaster cast?

The anode heel affect 1)should be considered when the structure of interest is more than 43 inches long. 2)is a variation in photon intensity across the exposure field. 3)occurs because the heel of the anode absorbs more photons than the toe. 4)is best used with the thinner body toward the cathode.

What is the technical adjustment required with the patient condition of ascites?

When is the examination or body part selected when using the DR system?

Guidelines for Image Analysis

Image Analysis of the Chest and Abdomen

Image Analysis of the Upper Extremity

Image Analysis of the Shoulder

Image Analysis of the Lower Extremity

Image Analysis of the Hip and Pelvis

Image Analysis of the Cervical and Thoracic Vertebrae

Image Analysis of the Lumbar Vertebrae, Sacrum, and Coccyx

Image Analysis of the Sternum and Ribs

Image Analysis of the Cranium

Image Analysis of the Digestive System

Filters

Exam 2: Visibility of Details

Which of the following patient conditions demonstrates low subject contrast?

Exposure indicators 1)are used to create the histogram. 2)denote the quantity of photons that strike the IR. 3)are used to determine dose to the patient. 4)are displayed on the digital image.

Histogram analysis errors for digital systems include all of the following except

Appropriate scatter radiation control methods include which of the following? 1)Tight collimation 2)Lead masking at the edge of the exposure field 3)Appropriate use of a grid 4)Lower kV settings 5)Using an air gap method

The light collected and converted to an electrical signal by the photomultiplier tube (PMT) during CR image sampling is then sent to the _____ to be digitized.

What percentage of kVp adjustment doubles the density on an image?

Which of the following patient conditions demonstrates high subject contrast?

Saturation indicates

When an image resembles a double exposure, the type of artifact demonstrated is a(n) _____ artifact.

What is the location on a histogram graph of air/gas?

The exposure indicator number represents all of the following except the

What is the technical adjustment required with the trauma device of a small to medium plaster cast?

The anode heel affect 1)should be considered when the structure of interest is more than 43 inches long. 2)is a variation in photon intensity across the exposure field. 3)occurs because the heel of the anode absorbs more photons than the toe. 4)is best used with the thinner body toward the cathode.

What is the technical adjustment required with the patient condition of ascites?

When is the examination or body part selected when using the DR system?

Guidelines for Image Analysis

Image Analysis of the Chest and Abdomen

Image Analysis of the Upper Extremity

Image Analysis of the Shoulder

Image Analysis of the Lower Extremity

Image Analysis of the Hip and Pelvis

Image Analysis of the Cervical and Thoracic Vertebrae

Image Analysis of the Lumbar Vertebrae, Sacrum, and Coccyx

Image Analysis of the Sternum and Ribs

Image Analysis of the Cranium

Image Analysis of the Digestive System

Filters