Question 1

Increasing visibility of darker anatomic regions is accomplished by:

Accepted Answer

A)  raising the window level 
B)  lowering the window level 
C)  increasing the window width 
D)  decreasing the window width 
A)  raising the window level 
B)  lowering the window level 
C)  increasing the window width 
D)  decreasing the window width A

Question 2

The sensitometer:

Accepted Answer

A)  must be exposed to x-rays 
B)  produces step-wedge densities 
C)  measures the sensitivity of the film 
D)  A and B 
A)  must be exposed to x-rays 
B)  produces step-wedge densities 
C)  measures the sensitivity of the film 
D)  A and B B

Question 3

If there were no contrast in a radiograph,the image would include:

Accepted Answer

A)  only the same shade of gray 
B)  black and white 
C)  light gray and dark gray 
D)  black and light gray 
A)  only the same shade of gray 
B)  black and white 
C)  light gray and dark gray 
D)  black and light gray A

Question 4

The maximum resolution the human eye is able to see is approximately:

Accepted Answer

A)  2 Lp/mm 
B)  5 Lp/mm 
C)  8 Lp/mm 
D)  10 Lp/mm 
A)  2 Lp/mm 
B)  5 Lp/mm 
C)  8 Lp/mm 
D)  10 Lp/mm

Question 5

The result of film-screen imaging having a small dynamic range is that it is difficult to over- or underexpose a film-screen image.

Accepted Answer

A) True 
 B)False

Question 6

What is the inverse of 20% transmittance?

Accepted Answer

A)  2 
B)  5 
C)  10 
D)  20 
A)  2 
B)  5 
C)  10 
D)  20

Question 7

Resolution is typically measured in:

Accepted Answer

A)  line pairs per millimeter 
B)  line pairs per meter 
C)  line pairs per inch 
D)  line pairs per foot 
A)  line pairs per millimeter 
B)  line pairs per meter 
C)  line pairs per inch 
D)  line pairs per foot

Question 8

The size of a pixel is measured in:

Accepted Answer

A)  millimeters 
B)  microns 
C)  centimeters 
D)  inches 
A)  millimeters 
B)  microns 
C)  centimeters 
D)  inches

Question 9

Film optical density is a number that represents a comparison of:

Accepted Answer

A)  light entering an area on the film 
B)  light leaving an area on the film 
C)  the amount of energy needed to create the film image 
D)  A and B 
A)  light entering an area on the film 
B)  light leaving an area on the film 
C)  the amount of energy needed to create the film image 
D)  A and B

Question 10

Film-screen and digital imaging both involve:

Accepted Answer

A)  setting appropriate exposure factors 
B)  accurate positioning and centering of the anatomy of interest 
C)  accurate and appropriate use of grids and collimation 
D)  all of the above 
A)  setting appropriate exposure factors 
B)  accurate positioning and centering of the anatomy of interest 
C)  accurate and appropriate use of grids and collimation 
D)  all of the above

Question 11

Sensitometry is used to evaluate:

Accepted Answer

A)  beam quality 
B)  film characteristics 
C)  chemical processing performance 
D)  B and C 
A)  beam quality 
B)  film characteristics 
C)  chemical processing performance 
D)  B and C

Question 12

Using a high-kVp x-ray beam results in:

Accepted Answer

A)  increased transmission 
B)  increased absorption 
C)  higher energy x-ray photons 
D)  A and C 
A)  increased transmission 
B)  increased absorption 
C)  higher energy x-ray photons 
D)  A and C

Question 13

The steeper the slope of the curve's straight-line region:

Accepted Answer

A)  the faster the film speed 
B)  the slower the film speed 
C)  the higher the film contrast 
D)  the lower the film contrast 
A)  the faster the film speed 
B)  the slower the film speed 
C)  the higher the film contrast 
D)  the lower the film contrast

Question 14

Optimal density is the amount of density that falls:

Accepted Answer

A)  in the toe of the sensitometric curve 
B)  in the straight-line portion of the sensitometric curve 
C)  in the shoulder region of the sensitometric curve 
D)  it depends on the anatomy being imaged 
A)  in the toe of the sensitometric curve 
B)  in the straight-line portion of the sensitometric curve 
C)  in the shoulder region of the sensitometric curve 
D)  it depends on the anatomy being imaged

Question 15

Scatter radiation:

Accepted Answer

A)  is the result of photoelectric interactions 
B)  decreases the visibility of anatomic structures 
C)  results in higher radiographic contrast 
D)  A and B 
A)  is the result of photoelectric interactions 
B)  decreases the visibility of anatomic structures 
C)  results in higher radiographic contrast 
D)  A and B

Question 16

The resolution of the monitor used to display the digital image has an enormous effect on spatial resolution.

Accepted Answer

A) True 
 B)False

Question 17

An area of anatomy that has high subject contrast is the:

Accepted Answer

A)  abdomen 
B)  femur 
C)  breast 
D)  none of the above 
A)  abdomen 
B)  femur 
C)  breast 
D)  none of the above

Question 18

Distortion is misrepresentation of the size or shape of the anatomy being imaged.

Accepted Answer

A) True 
 B)False

Question 19

Improper chemical processing can result in:

Accepted Answer

A)  a film-screen image artifact 
B)  a digital image artifact 
C)  a film-screen image and digital image artifact 
D)  none of the above 
A)  a film-screen image artifact 
B)  a digital image artifact 
C)  a film-screen image and digital image artifact 
D)  none of the above

Question 20

The ability of the imaging system to distinguish between two structures is:

Accepted Answer

A)  latitude 
B)  resolution 
C)  contrast 
D)  distortion 
A)  latitude 
B)  resolution 
C)  contrast 
D)  distortion

Increasing visibility of darker anatomic regions is accomplished by:

The sensitometer:

If there were no contrast in a radiograph,the image would include:

The maximum resolution the human eye is able to see is approximately:

The result of film-screen imaging having a small dynamic range is that it is difficult to over- or underexpose a film-screen image.

What is the inverse of 20% transmittance?

Resolution is typically measured in:

The size of a pixel is measured in:

Film optical density is a number that represents a comparison of:

Film-screen and digital imaging both involve:

Sensitometry is used to evaluate:

Using a high-kVp x-ray beam results in:

The steeper the slope of the curve's straight-line region:

Optimal density is the amount of density that falls:

Scatter radiation:

The resolution of the monitor used to display the digital image has an enormous effect on spatial resolution.

An area of anatomy that has high subject contrast is the:

Distortion is misrepresentation of the size or shape of the anatomy being imaged.

Improper chemical processing can result in:

The ability of the imaging system to distinguish between two structures is:

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Radiographic Exposure Technique

Scatter Control

Image Receptors

Automatic Exposure Control

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters

Exam 9: Image Characteristics

Increasing visibility of darker anatomic regions is accomplished by:

The sensitometer:

If there were no contrast in a radiograph,the image would include:

The maximum resolution the human eye is able to see is approximately:

The result of film-screen imaging having a small dynamic range is that it is difficult to over- or underexpose a film-screen image.

What is the inverse of 20% transmittance?

Resolution is typically measured in:

The size of a pixel is measured in:

Film optical density is a number that represents a comparison of:

Film-screen and digital imaging both involve:

Sensitometry is used to evaluate:

Using a high-kVp x-ray beam results in:

The steeper the slope of the curve's straight-line region:

Optimal density is the amount of density that falls:

Scatter radiation:

The resolution of the monitor used to display the digital image has an enormous effect on spatial resolution.

An area of anatomy that has high subject contrast is the:

Distortion is misrepresentation of the size or shape of the anatomy being imaged.

Improper chemical processing can result in:

The ability of the imaging system to distinguish between two structures is:

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Radiographic Exposure Technique

Scatter Control

Image Receptors

Automatic Exposure Control

Image Intensified Fluoroscopy

Additional Equipment

Computed Tomography

Filters