Question 1

Higher speed image receptors generally produce images with _____.

Accepted Answer

A)  better resolution 
B)  increased noise 
C)  higher contrast 
D)  improved detail 
A)  better resolution 
B)  increased noise 
C)  higher contrast 
D)  improved detail

Question 2

The three primary geometric factors affecting image quality are _____.

Accepted Answer

A)  distortion, subject contrast, and mAs 
B)  patient thickness, distortion, and magnification 
C)  magnification, distortion, and focal spot blur 
D)  kVp, focal spot blur, and contrast 
A)  distortion, subject contrast, and mAs 
B)  patient thickness, distortion, and magnification 
C)  magnification, distortion, and focal spot blur 
D)  kVp, focal spot blur, and contrast

Question 3

What is the formula for optical density?

Accepted Answer

A)  OD = log10(Io/It) 
B)  OD = log10(It/Io) 
C)  OD = Io/It 
D)  OD = It/ Io 
A)  OD = log10(Io/It) 
B)  OD = log10(It/Io) 
C)  OD = Io/It 
D)  OD = It/ Io

Question 4

A film with a characteristic curve showing a high slope would be useful when _____ is needed.

Accepted Answer

A)  low contrast 
B)  wide latitude 
C)  high contrast 
D)  fine detail 
A)  low contrast 
B)  wide latitude 
C)  high contrast 
D)  fine detail

Question 5

Spatial resolution improves with decreased _____ blur.

Accepted Answer

A)  screen 
B)  motion 
C)  geometric 
D)  all of the above 
A)  screen 
B)  motion 
C)  geometric 
D)  all of the above

Exam 10: Concepts of Radiographic Image Quality

Higher speed image receptors generally produce images with _____.

The three primary geometric factors affecting image quality are _____.

What is the formula for optical density?

A film with a characteristic curve showing a high slope would be useful when _____ is needed.

Spatial resolution improves with decreased _____ blur.

Essential Concepts of Radiologic Science

The Structure of Matter

Electromagnetic Energy

Electricity, Magnetism, and Electromagnetism

The X-ray Imaging System

The X-ray Tube

X-ray Production

X-ray Emission

X-ray Interaction with Matter

Control of Scatter Radiation

Screen-Film Radiography

Screen-Film Radiographic Technique

Computers in Medical Imaging

Computed Radiography

Digital Radiography

Digital Radiographic Technique

Viewing the Digital Radiographic Image

Screen-Film Radiographic Artifacts

Screen-Film Radiographic Quality Control

Digital Radiographic Artifacts

Digital Radiographic Quality Control

Mammography

Mammography Quality Control

Fluoroscopy

Digital Fluoroscopy

Interventional Radiography

Computed Tomography

Human Biology

Fundamental Principles of Radiobiology

Molecular Radiobiology

Cellular Radiobiology

Deterministic Effects of Radiation

Stochastic Effects of Radiation

Health Physics

Designing for Radiation Protection

Patient Radiation Dose Management

Occupational Radiation Dose Management

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