Question 1

The higher the kilovoltage peak,the

Accepted Answer

A)  wider the histogram. 
B)  narrower the histogram. 
C)  higher the frequency. 
D)  lower the frequency. 
A)  wider the histogram. 
B)  narrower the histogram. 
C)  higher the frequency. 
D)  lower the frequency. B

Question 2

A histogram displays the useful signal by locating

Accepted Answer

A)  all pixel values. 
B)  maximum and minimum signal. 
C)  maximum signal only. 
D)  minimum signal only. 
A)  all pixel values. 
B)  maximum and minimum signal. 
C)  maximum signal only. 
D)  minimum signal only. B

Question 3

Image level parameters control image

Accepted Answer

A)  brightness. 
B)  darkness. 
C)  contrast. 
D)  density. 
A)  brightness. 
B)  darkness. 
C)  contrast. 
D)  density. A

Question 4

Image aliasing is similar to the moiré effect caused by grid error.

Accepted Answer

A) True 
 B)False

Question 5

Data collected within the collimator are represented by a

Accepted Answer

A)  histogram. 
B)  characteristic curve. 
C)  pixel graph. 
D)  matrix graph. 
A)  histogram. 
B)  characteristic curve. 
C)  pixel graph. 
D)  matrix graph.

Question 6

In an effort to display the pixels for the area of interest when exposure is greater or less than what is needed to produce an image,______ occurs.

Accepted Answer

A)  overexposure 
B)  underexposure 
C)  automatic collimation 
D)  automatic rescaling 
A)  overexposure 
B)  underexposure 
C)  automatic collimation 
D)  automatic rescaling

Question 7

The improper algorithm application may result in

Accepted Answer

A)  enhanced contrast. 
B)  improved resolution. 
C)  repeat examinations. 
D)  degradation of the image. 
A)  enhanced contrast. 
B)  improved resolution. 
C)  repeat examinations. 
D)  degradation of the image.

Question 8

A wraparound image or image aliasing occurs when

Accepted Answer

A)  sampling occurs twice per cycle. 
B)  spatial frequency is less than the Nyquist frequency. 
C)  sampling occurs less than twice per cycle. 
D)  spatial frequency is equal to the Nyquist frequency. 
A)  sampling occurs twice per cycle. 
B)  spatial frequency is less than the Nyquist frequency. 
C)  sampling occurs less than twice per cycle. 
D)  spatial frequency is equal to the Nyquist frequency.

Question 9

Shuttering removes the dark exposed border,reducing the amount of information to be stored.

Accepted Answer

A) True 
 B)False

Question 10

Proper patient demographic input ensures

Accepted Answer

A)  multiple records on each patient. 
B)  linking of all the patient's files. 
C)  multiple versions of the patient's name. 
D)  an increase in the amount of data tracking. 
A)  multiple records on each patient. 
B)  linking of all the patient's files. 
C)  multiple versions of the patient's name. 
D)  an increase in the amount of data tracking.

Question 11

Window width controls the ratio of black and white,also known as

Accepted Answer

A)  window. 
B)  level. 
C)  contrast. 
D)  matrix. 
A)  window. 
B)  level. 
C)  contrast. 
D)  matrix.

Question 12

A look-up table is not used as a reference to

Accepted Answer

A)  set appropriate kilovoltage peak and milliampere-seconds values. 
B)  evaluate raw luminance values. 
C)  correct luminance values. 
D)  provide appropriate brightness and contrast. 
A)  set appropriate kilovoltage peak and milliampere-seconds values. 
B)  evaluate raw luminance values. 
C)  correct luminance values. 
D)  provide appropriate brightness and contrast.

Question 13

Excessive light entering the eye when viewing an image is known as ______ glare.

Accepted Answer

A)  veil 
B)  window 
C)  level 
D)  None of these 
A)  veil 
B)  window 
C)  level 
D)  None of these

Question 14

Historical study of patient examinations can be accomplished through the manual send function.

Accepted Answer

A) True 
 B)False

Question 15

Averaging the frequency of each pixel with surrounding pixel values to remove high-frequency noise is called

Accepted Answer

A)  high-pass filtering. 
B)  low-pass filtering. 
C)  edge enhancement. 
D)  noise enhancement. 
A)  high-pass filtering. 
B)  low-pass filtering. 
C)  edge enhancement. 
D)  noise enhancement.

Question 16

The Nyquist theorem states that the

Accepted Answer

A)  sampling frequency must be equal to the input signal bandwidth. 
B)  input signal bandwidth must be twice the sampling frequency. 
C)  sampling frequency must be twice the input signal bandwidth. 
D)  input signal bandwidth must be sampled twice. 
A)  sampling frequency must be equal to the input signal bandwidth. 
B)  input signal bandwidth must be twice the sampling frequency. 
C)  sampling frequency must be twice the input signal bandwidth. 
D)  input signal bandwidth must be sampled twice.

Question 17

High-pass filtering is useful for enhancing

Accepted Answer

A)  small structures. 
B)  fine bone tissues. 
C)  large bony structures. 
D)  organs and soft tissue. 
A)  small structures. 
B)  fine bone tissues. 
C)  large bony structures. 
D)  organs and soft tissue.

Question 18

Input of annotation for identification of the patient's left or right side

Accepted Answer

A)  should take the place of the technologist's anatomy markers. 
B)  should be used in conjunction with the technologist's markers. 
C)  eliminates the need for any other type of anatomy markers. 
D)  None of the above 
A)  should take the place of the technologist's anatomy markers. 
B)  should be used in conjunction with the technologist's markers. 
C)  eliminates the need for any other type of anatomy markers. 
D)  None of the above

Question 19

Automatic rescaling means that images are produced,regardless of the amount of exposure,with

Accepted Answer

A)  uniform size and shape. 
B)  uniform contrast and density. 
C)  variable size and shape. 
D)  variable contrast and density. 
A)  uniform size and shape. 
B)  uniform contrast and density. 
C)  variable size and shape. 
D)  variable contrast and density.

Question 20

The longer an image is stored in the computed radiography (CR)cassette,the

Accepted Answer

A)  more detailed the processed image. 
B)  more energy is lost by the electrons. 
C)  easier the image is to process. 
D)  slower the processing time. 
A)  more detailed the processed image. 
B)  more energy is lost by the electrons. 
C)  easier the image is to process. 
D)  slower the processing time.

The higher the kilovoltage peak,the

A histogram displays the useful signal by locating

Image level parameters control image

Image aliasing is similar to the moiré effect caused by grid error.

Data collected within the collimator are represented by a

In an effort to display the pixels for the area of interest when exposure is greater or less than what is needed to produce an image,______ occurs.

The improper algorithm application may result in

A wraparound image or image aliasing occurs when

Shuttering removes the dark exposed border,reducing the amount of information to be stored.

Proper patient demographic input ensures

Window width controls the ratio of black and white,also known as

A look-up table is not used as a reference to

Excessive light entering the eye when viewing an image is known as ______ glare.

Historical study of patient examinations can be accomplished through the manual send function.

Averaging the frequency of each pixel with surrounding pixel values to remove high-frequency noise is called

The Nyquist theorem states that the

High-pass filtering is useful for enhancing

Input of annotation for identification of the patient's left or right side

Automatic rescaling means that images are produced,regardless of the amount of exposure,with

The longer an image is stored in the computed radiography (CR)cassette,the

Introduction to Digital Radiography and Picture Archiving and Communication Systems

Digital Imaging Characteristics

Photostimulable Phosphor Image Capture

Thin-Film Transistor Flat-Panel Array Image Acquisition

Charge-Coupled Devicecomplementary Metal Oxide Semiconductor Image Capture

Basic Computer Principles

Networking and Communication Basics

Picture Archiving and Communication System Fundamentals

Picture Archiving and Communication System Archiving and Peripherals

Medical Informatics

Ensuring Quality in Picture Archiving and Communication Systems

Quality Acceptance Testing Within Digital Projection Imaging

Filters

Exam 3: Digital Radiographic Image Processing and Manipulation

The higher the kilovoltage peak,the

A histogram displays the useful signal by locating

Image level parameters control image

Image aliasing is similar to the moiré effect caused by grid error.

Data collected within the collimator are represented by a

In an effort to display the pixels for the area of interest when exposure is greater or less than what is needed to produce an image,______ occurs.

The improper algorithm application may result in

A wraparound image or image aliasing occurs when

Shuttering removes the dark exposed border,reducing the amount of information to be stored.

Proper patient demographic input ensures

Window width controls the ratio of black and white,also known as

A look-up table is not used as a reference to

Excessive light entering the eye when viewing an image is known as ______ glare.

Historical study of patient examinations can be accomplished through the manual send function.

Averaging the frequency of each pixel with surrounding pixel values to remove high-frequency noise is called

The Nyquist theorem states that the

High-pass filtering is useful for enhancing

Input of annotation for identification of the patient's left or right side

Automatic rescaling means that images are produced,regardless of the amount of exposure,with

The longer an image is stored in the computed radiography (CR)cassette,the

Introduction to Digital Radiography and Picture Archiving and Communication Systems

Digital Imaging Characteristics

Photostimulable Phosphor Image Capture

Thin-Film Transistor Flat-Panel Array Image Acquisition

Charge-Coupled Devicecomplementary Metal Oxide Semiconductor Image Capture

Basic Computer Principles

Networking and Communication Basics

Picture Archiving and Communication System Fundamentals

Picture Archiving and Communication System Archiving and Peripherals

Medical Informatics

Ensuring Quality in Picture Archiving and Communication Systems

Quality Acceptance Testing Within Digital Projection Imaging

Filters