Question 1

Fog affects radiographic quality by causing:

Accepted Answer

A)  underexposure. 
B)  decreased contrast. 
C)  increased contrast. 
D)  decreased density. 
A)  underexposure. 
B)  decreased contrast. 
C)  increased contrast. 
D)  decreased density. B

Question 2

A low kVp setting produces an image with:

Accepted Answer

A)  a long scale of contrast. 
B)  a short scale of contrast. 
C)  high recorded detail. 
D)  a low level of contrast. 
A)  a long scale of contrast. 
B)  a short scale of contrast. 
C)  high recorded detail. 
D)  a low level of contrast. B

Question 3

When an image demonstrates many densities,and there is little difference between the densities,the image is described as having:

Accepted Answer

A)  short-scale contrast. 
B)  long-scale contrast. 
C)  low contrast. 
D)  increased recorded detail. 
A)  short-scale contrast. 
B)  long-scale contrast. 
C)  low contrast. 
D)  increased recorded detail. B

Question 4

Which of the following,if increased,will result in increased radiographic density?
1) Increased mA
2) Increased exposure time
3) Increased kVp

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

The primary controlling factor of penetration of x-rays is:

Accepted Answer

A)  mA. 
B)  kVp. 
C)  SID. 
D)  exposure time. 
A)  mA. 
B)  kVp. 
C)  SID. 
D)  exposure time.

Question 6

The mass density of the radiographic subject is referred to as:

Accepted Answer

A)  radiographic density. 
B)  tissue density. 
C)  radiographic contrast. 
D)  subject contrast. 
A)  radiographic density. 
B)  tissue density. 
C)  radiographic contrast. 
D)  subject contrast.

Question 7

When a body part appears on a radiograph as longer than it actually is,the term used is:

Accepted Answer

A)  penumbra. 
B)  distortion. 
C)  elongation. 
D)  foreshortening. 
A)  penumbra. 
B)  distortion. 
C)  elongation. 
D)  foreshortening.

Question 8

Tissue density refers to the ________ of the body part.

Accepted Answer

A)  density of muscle 
B)  density of fat 
C)  mass density or atomic number 
D)  density of bone 
A)  density of muscle 
B)  density of fat 
C)  mass density or atomic number 
D)  density of bone

Question 9

When it is necessary to differentiate tissues with similar tissue densities,which of the following image quality factors is most desirable?

Accepted Answer

A)  High density 
B)  Low density 
C)  High contrast 
D)  Low contrast 
A)  High density 
B)  Low density 
C)  High contrast 
D)  Low contrast

Question 10

Which of the following would be considered involuntary motion by the patient?
1) Tremors
2) Peristalsis
3) Breathing

Accepted Answer

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

Question 11

When an image demonstrates great differences between the densities,the image is described as:

Accepted Answer

A)  poor quality. 
B)  high quality. 
C)  contrast. 
D)  high contrast. 
A)  poor quality. 
B)  high quality. 
C)  contrast. 
D)  high contrast.

Question 12

The inverse square law governs the relationship between x-ray beam:

Accepted Answer

A)  intensity and mAs. 
B)  penetrability and kVp. 
C)  penetrability and mAs. 
D)  intensity and distance. 
A)  intensity and mAs. 
B)  penetrability and kVp. 
C)  penetrability and mAs. 
D)  intensity and distance.

Question 13

Motion of the patient,the tube,or the IR during the exposure results in decreased:

Accepted Answer

A)  contrast. 
B)  distortion. 
C)  radiographic density. 
D)  resolution. 
A)  contrast. 
B)  distortion. 
C)  radiographic density. 
D)  resolution.

Question 14

What are the four primary aspects of radiographic quality?

Accepted Answer

A)  mA, seconds, kVp, and SID 
B)  SID, density, contrast, and mAs 
C)  Density, contrast, distortion, and spatial resolution 
D)  Density, contrast, distortion, and distance 
A)  mA, seconds, kVp, and SID 
B)  SID, density, contrast, and mAs 
C)  Density, contrast, distortion, and spatial resolution 
D)  Density, contrast, distortion, and distance

Question 15

The geometric factors that affect the formation of the image are:
1) SID.
2) OID.
3) focal spot.

Accepted Answer

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

Question 16

The distance between the tube target and the IR is termed:

Accepted Answer

A)  source-image receptor distance (SI
D) . 
B)  target-image receptor distance (TI
D) . 
C)  total- image receptor distance (TI
D) . 
D)  tube-target receptor distance (TT
D) . 
A)  source-image receptor distance (SI
D) . 
B)  target-image receptor distance (TI
D) . 
C)  total- image receptor distance (TI
D) . 
D)  tube-target receptor distance (TT
D) .

Question 17

A change from the small focal spot to the large focal spot results in:

Accepted Answer

A)  decreased resolution. 
B)  magnification. 
C)  distortion. 
D)  increased contrast. 
A)  decreased resolution. 
B)  magnification. 
C)  distortion. 
D)  increased contrast.

Question 18

If the radiographic image is overexposed,which of the following changes in exposure factors should be used to correct the problem?

Accepted Answer

A)  Decrease kVp 
B)  Increase kVp 
C)  Increase mAs 
D)  Decrease mAs 
A)  Decrease kVp 
B)  Increase kVp 
C)  Increase mAs 
D)  Decrease mAs

Question 19

Which of the following minimize shape distortion?
1) Position plane of subject parallel to plane of IR.
2) Position plane of subject perpendicular to plane of IR.
3) Position the CR perpendicular to IR and subject.

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 20

Shape distortion is the result of:

Accepted Answer

A)  tube angulation greater than 15 degrees. 
B)  unequal magnification of the actual shape of the structure. 
C)  an SID that is too short. 
D)  an SID that is too long. 
A)  tube angulation greater than 15 degrees. 
B)  unequal magnification of the actual shape of the structure. 
C)  an SID that is too short. 
D)  an SID that is too long.

Exam 7: Principles of Exposure and Image Quality

Fog affects radiographic quality by causing:

A low kVp setting produces an image with:

When an image demonstrates many densities,and there is little difference between the densities,the image is described as having:

Which of the following,if increased,will result in increased radiographic density? 1) Increased mA 2) Increased exposure time 3) Increased kVp

The primary controlling factor of penetration of x-rays is:

The mass density of the radiographic subject is referred to as:

When a body part appears on a radiograph as longer than it actually is,the term used is:

Tissue density refers to the ________ of the body part.

When it is necessary to differentiate tissues with similar tissue densities,which of the following image quality factors is most desirable?

Which of the following would be considered involuntary motion by the patient? 1) Tremors 2) Peristalsis 3) Breathing

When an image demonstrates great differences between the densities,the image is described as:

The inverse square law governs the relationship between x-ray beam:

Motion of the patient,the tube,or the IR during the exposure results in decreased:

What are the four primary aspects of radiographic quality?

The geometric factors that affect the formation of the image are: 1) SID. 2) OID. 3) focal spot.

The distance between the tube target and the IR is termed:

A change from the small focal spot to the large focal spot results in:

If the radiographic image is overexposed,which of the following changes in exposure factors should be used to correct the problem?

Which of the following minimize shape distortion? 1) Position plane of subject parallel to plane of IR. 2) Position plane of subject perpendicular to plane of IR. 3) Position the CR perpendicular to IR and subject.

Shape distortion is the result of:

Role of the Limited X-Ray Machine Operator

Introduction to Radiographic Equipment

Basic Mathematics for Limited Operators

Basic Physics of Radiography

X-Ray Production

X-Ray Circuit and Tube Heat Management

Digital Image Receptor Systems

Scatter Radiation and Its Control

Formulating X-Ray Techniques

Radiobiology and Radiation Safety

Introduction to Anatomy, positioning, and Pathology

Upper Extremity and Shoulder Girdle

Lower Extremity and Pelvis

Spine

Bony Thorax, Chest, and Abdomen

Skull, Facial Bones, and Paranasal Sinuses

Radiography of Pediatric and Geriatric Patients

Image Evaluation

Ethics, Legal Considerations, and Professionalism

Safety and Infection Control

Assessing Patients and Managing Acute Situations

Medications and Their Administration

Medical Laboratory Skills

Additional Procedures for Assessment and Diagnosis

Bone Densitometry

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