Question 1

The term used in the new digital imaging environment to replace density is:

Accepted Answer

A)  brightness. 
B)  matrix. 
C)  dynamic range. 
D)  exposure latitude. 
A)  brightness. 
B)  matrix. 
C)  dynamic range. 
D)  exposure latitude.

Question 2

The unit used to indicate the total quantity of x-rays in an exposure is:

Accepted Answer

A)  mAs. 
B)  SID. 
C)  kVp. 
D)  volts. 
A)  mAs. 
B)  SID. 
C)  kVp. 
D)  volts.

Question 3

The overall darkness,or blackness,within a radiographic image is referred to as:

Accepted Answer

A)  density. 
B)  contrast. 
C)  recorded detail. 
D)  mAs. 
A)  density. 
B)  contrast. 
C)  recorded detail. 
D)  mAs.

Question 4

The inverse square law states that the intensity of the x-ray beam is ______ to the square of the distance.

Accepted Answer

A)  directly proportional 
B)  inversely proportional 
C)  not related 
D)  proportional 
A)  directly proportional 
B)  inversely proportional 
C)  not related 
D)  proportional

Question 5

A variation in the size or shape of the image as compared with the subject it represents is called:

Accepted Answer

A)  resolution. 
B)  distortion. 
C)  unsharpness. 
D)  fog. 
A)  resolution. 
B)  distortion. 
C)  unsharpness. 
D)  fog.

Question 6

The unsharp,"fuzzy" appearance of margins of anatomic structures within the radiographic image is called:

Accepted Answer

A)  fog. 
B)  distortion. 
C)  penumbra. 
D)  umbra. 
A)  fog. 
B)  distortion. 
C)  penumbra. 
D)  umbra.

Question 7

If a radiographic image appears blurred,what aspect of image quality is affected?

Accepted Answer

A)  Density 
B)  Contrast 
C)  Spatial resolution 
D)  Distortion 
A)  Density 
B)  Contrast 
C)  Spatial resolution 
D)  Distortion

Question 8

Which of the following will increase spatial resolution?
1) Increase in SID
2) Increase in OID
3) Decrease in focal spot size

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 9

The difference in density between any two adjacent portions of the image is called:

Accepted Answer

A)  tissue density. 
B)  sharpness of detail. 
C)  radiographic recorded detail. 
D)  radiographic contrast. 
A)  tissue density. 
B)  sharpness of detail. 
C)  radiographic recorded detail. 
D)  radiographic contrast.

Question 10

If the mA doubles,dose to the patient will:

Accepted Answer

A)  increase 25%. 
B)  increase 50%. 
C)  double. 
D)  be reduced 50%. 
A)  increase 25%. 
B)  increase 50%. 
C)  double. 
D)  be reduced 50%.

Question 11

What is the first step to reduce patient motion?

Accepted Answer

A)  Use a technique with a low mA and a long exposure time. 
B)  Use high kVp techniques. 
C)  Use detailed IR systems. 
D)  Communicate with the patient about the procedure and what the patient needs to do to help. 
A)  Use a technique with a low mA and a long exposure time. 
B)  Use high kVp techniques. 
C)  Use detailed IR systems. 
D)  Communicate with the patient about the procedure and what the patient needs to do to help.

Question 12

What is the effect of magnification on spatial resolution?

Accepted Answer

A)  Magnification has no effect on resolution. 
B)  Magnification increases resolution. 
C)  Magnification decreases resolution. 
D)  The effect of magnification on resolution is variable according to kVp and IR speed. 
A)  Magnification has no effect on resolution. 
B)  Magnification increases resolution. 
C)  Magnification decreases resolution. 
D)  The effect of magnification on resolution is variable according to kVp and IR speed.

Question 13

Fog is primarily caused by:

Accepted Answer

A)  a kVp that is too high. 
B)  a kVp that is too low. 
C)  scattered radiation. 
D)  patient size. 
A)  a kVp that is too high. 
B)  a kVp that is too low. 
C)  scattered radiation. 
D)  patient size.

Question 14

Which of the following are the prime factors of exposure in radiography?

Accepted Answer

A)  Density, contrast, spatial resolution, and distortion 
B)  Density, contrast, distortion, and kilovoltage 
C)  mAs, kilovoltage, density, and distance (SI
D)  
D)  Milliamperage, exposure time, kilovoltage, and source-distance receptor distance (SI
D)  
A)  Density, contrast, spatial resolution, and distortion 
B)  Density, contrast, distortion, and kilovoltage 
C)  mAs, kilovoltage, density, and distance (SI
D)  
D)  Milliamperage, exposure time, kilovoltage, and source-distance receptor distance (SI
D)

Question 15

The distance between the subject or part and the IR is referred to as:

Accepted Answer

A)  object-image receptor distance (OI
D) . 
B)  part-receptor distance (PR
D) . 
C)  source-receptor distance (SR
D) . 
D)  source-image receptor distance (SI
D) . 
A)  object-image receptor distance (OI
D) . 
B)  part-receptor distance (PR
D) . 
C)  source-receptor distance (SR
D) . 
D)  source-image receptor distance (SI
D) .

Question 16

With a large OID,the reduction of excessive magnification is accomplished by:

Accepted Answer

A)  increasing the SID. 
B)  increasing the kVp. 
C)  decreasing the SID. 
D)  decreasing the kVp. 
A)  increasing the SID. 
B)  increasing the kVp. 
C)  decreasing the SID. 
D)  decreasing the kVp.

Exam 7: Principles of Exposure and Image Quality

The term used in the new digital imaging environment to replace density is:

The unit used to indicate the total quantity of x-rays in an exposure is:

The overall darkness,or blackness,within a radiographic image is referred to as:

The inverse square law states that the intensity of the x-ray beam is ______ to the square of the distance.

A variation in the size or shape of the image as compared with the subject it represents is called:

The unsharp,"fuzzy" appearance of margins of anatomic structures within the radiographic image is called:

If a radiographic image appears blurred,what aspect of image quality is affected?

Which of the following will increase spatial resolution? 1) Increase in SID 2) Increase in OID 3) Decrease in focal spot size

The difference in density between any two adjacent portions of the image is called:

If the mA doubles,dose to the patient will:

What is the first step to reduce patient motion?

What is the effect of magnification on spatial resolution?

Fog is primarily caused by:

Which of the following are the prime factors of exposure in radiography?

The distance between the subject or part and the IR is referred to as:

With a large OID,the reduction of excessive magnification is accomplished by:

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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