Question 1

Focal spot and OID affect image sharpness ______.

Accepted Answer

A) Only in film/screen imaging 
B) Only in digital imaging 
C) In both film/screen and digital imaging 
D) In neither film/screen nor digital imaging 
A) Only in film/screen imaging 
B) Only in digital imaging 
C) In both film/screen and digital imaging 
D) In neither film/screen nor digital imaging

Question 2

Changing the steepness of the exposure gradient ______.

Accepted Answer

A) Varies density 
B) Determines spatial frequency 
C) Controls image contrast 
D) Has no effect on the image 
A) Varies density 
B) Determines spatial frequency 
C) Controls image contrast 
D) Has no effect on the image

Question 3

Exposure latitude for digital imaging is less than that of film/screen imaging.

Accepted Answer

A) True 
 B)False

Question 4

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 5

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 6

The workstation function that allows selection of preset terms and/or manual text input is termed image ______.

Accepted Answer

A) Connection 
B) Annotation 
C) Stitching 
D) Lacing 
A) Connection 
B) Annotation 
C) Stitching 
D) Lacing

Question 7

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) Smoothing 
D) Noise enhancement 
A) High-pass filtering 
B) Low-pass filtering 
C) Smoothing 
D) Noise enhancement

Question 8

If all of the shades were left in an image after processing, the contrast would be ______.

Accepted Answer

A) Too low 
B) Too high 
C) Sufficient 
D) Unaffected 
A) Too low 
B) Too high 
C) Sufficient 
D) Unaffected

Question 9

Amplification of the frequencies of the areas of interest is known as ______.

Accepted Answer

A) Algorithm application 
B) Center enhancement 
C) Edge enhancement 
D) Masking 
A) Algorithm application 
B) Center enhancement 
C) Edge enhancement 
D) Masking

Question 10

Raw data used to form the image histogram are compared with ______.

Accepted Answer

A) A normal histogram referenced by the computer 
B) All histograms stored for that anatomic part 
C) The last histogram of that anatomic part 
D) None of these 
A) A normal histogram referenced by the computer 
B) All histograms stored for that anatomic part 
C) The last histogram of that anatomic part 
D) None of these

Question 11

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 12

Low-pass filtering is also known as ______.

Accepted Answer

A) Evening 
B) Smoothing 
C) Masking 
D) Marking 
A) Evening 
B) Smoothing 
C) Masking 
D) Marking

Question 13

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 14

No matter where the orientation stickers or labels exist on a digital cassette, the image will display correctly.

Accepted Answer

A) True 
 B)False

Question 15

The more light spread, the ______ the MTF.

Accepted Answer

A) Higher 
B) Lower 
C) More equal 
D) None of these 
A) Higher 
B) Lower 
C) More equal 
D) None of these

Question 16

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 17

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 density and contrast 
A) Set appropriate kilovoltage peak and milliampere-seconds values 
B) Evaluate raw luminance values 
C) Correct luminance values 
D) Provide appropriate density and contrast

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

The image reader scans and reads the image from the ______.

Accepted Answer

A) Back edge of the imaging plate to the opposite end 
B) Leading edge of the imaging plate to the opposite end 
C) The right to left side 
D) The left to right side 
A) Back edge of the imaging plate to the opposite end 
B) Leading edge of the imaging plate to the opposite end 
C) The right to left side 
D) The left to right side

Question 20

An image manipulation process that fills in the background so that it is darkened is known as ______.

Accepted Answer

A) Window 
B) Level 
C) Shuttering 
D) Collimation 
A) Window 
B) Level 
C) Shuttering 
D) Collimation

Focal spot and OID affect image sharpness ______.

Changing the steepness of the exposure gradient ______.

Exposure latitude for digital imaging is less than that of film/screen imaging.

The Nyquist theorem states that the ______.

High-pass filtering is useful for enhancing ______.

The workstation function that allows selection of preset terms and/or manual text input is termed image ______.

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

If all of the shades were left in an image after processing, the contrast would be ______.

Amplification of the frequencies of the areas of interest is known as ______.

Raw data used to form the image histogram are compared with ______.

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.

Low-pass filtering is also known as ______.

Data collected within the collimator are represented by a ______.

No matter where the orientation stickers or labels exist on a digital cassette, the image will display correctly.

The more light spread, the ______ the MTF.

Proper patient demographic input ensures ______.

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

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

The image reader scans and reads the image from the ______.

An image manipulation process that fills in the background so that it is darkened is known as ______.

Introduction to Digital Radiography and Pacs

Basic Computer Principles

Networking and Communications Basics

Cassette-Based Equipment: the Computed Radiography Cassette, Imaging Plate, and Reader

Cassette-Based Image Acquisition

Cassetteless Equipment and Image Acquisition

Pacs Fundamentals

Pacs Archiving

Digitizing, Printing, and Burning

Ensuring Quality in Pacs

Total Quality Management of Cr and Dr Systems

Filters

Exam 7: Digital Radiographic Image Processing and Manipulation

Focal spot and OID affect image sharpness ______.

Changing the steepness of the exposure gradient ______.

Exposure latitude for digital imaging is less than that of film/screen imaging.

The Nyquist theorem states that the ______.

High-pass filtering is useful for enhancing ______.

The workstation function that allows selection of preset terms and/or manual text input is termed image ______.

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

If all of the shades were left in an image after processing, the contrast would be ______.

Amplification of the frequencies of the areas of interest is known as ______.

Raw data used to form the image histogram are compared with ______.

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.

Low-pass filtering is also known as ______.

Data collected within the collimator are represented by a ______.

No matter where the orientation stickers or labels exist on a digital cassette, the image will display correctly.

The more light spread, the ______ the MTF.

Proper patient demographic input ensures ______.

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

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

The image reader scans and reads the image from the ______.

An image manipulation process that fills in the background so that it is darkened is known as ______.

Introduction to Digital Radiography and Pacs

Basic Computer Principles

Networking and Communications Basics

Cassette-Based Equipment: the Computed Radiography Cassette, Imaging Plate, and Reader

Cassette-Based Image Acquisition

Cassetteless Equipment and Image Acquisition

Pacs Fundamentals

Pacs Archiving

Digitizing, Printing, and Burning

Ensuring Quality in Pacs

Total Quality Management of Cr and Dr Systems

Filters