Question 1

Which of the following represents the logical order in digitizing an image?

Accepted Answer

A)  Scanning, sampling, and quantization 
B)  Sampling, scanning, and quantization 
C)  Quantization, scanning, and sampling 
D)  Sampling, quantization, and scanning 
A)  Scanning, sampling, and quantization 
B)  Sampling, scanning, and quantization 
C)  Quantization, scanning, and sampling 
D)  Sampling, quantization, and scanning

Question 2

Which of the following reduces the amount of data that makes up the image?

Accepted Answer

A)  Image enhancement 
B)  Image restoration 
C)  Image analysis 
D)  Image compression 
A)  Image enhancement 
B)  Image restoration 
C)  Image analysis 
D)  Image compression

Question 3

Please match the following digital image processing concepts for each group. Answer selections may be used more than once.

-In the operation, the entire input image is used to compute the value of the pixel in the output image

Accepted Answer

A) Global operations 
B) Point operations 
C) Local operations 
D) Geometrical operations 
A) Global operations 
B) Point operations 
C) Local operations 
D) Geometrical operations

Question 4

Visible images include all of the following except:

Accepted Answer

A)  paintings. 
B)  mathematical images. 
C)  photographs. 
D)  drawings. 
A)  paintings. 
B)  mathematical images. 
C)  photographs. 
D)  drawings.

Question 5

A digital image:

Accepted Answer

A)  is a continuous image. 
B)  is a numerical representation of an object. 
C)  cannot be processed by a digital computer. 
D)  is a nonvisible physical image. 
A)  is a continuous image. 
B)  is a numerical representation of an object. 
C)  cannot be processed by a digital computer. 
D)  is a nonvisible physical image.

Question 6

Pixels in a digital image representing information contained in a volume of tissue in the patient are referred to as a:

Accepted Answer

A)  pixel. 
B)  voxel. 
C)  bit depth. 
D)  matrix. 
A)  pixel. 
B)  voxel. 
C)  bit depth. 
D)  matrix.

Question 7

Digital image processing techniques have been applied successfully in not only the space program but also in medical imaging.

Accepted Answer

A) True 
 B)False

Question 8

The process of dividing a picture into small regions called pixels is referred to as:

Accepted Answer

A)  sampling. 
B)  quantization. 
C)  analog-to-digital conversion. 
D)  scanning. 
A)  sampling. 
B)  quantization. 
C)  analog-to-digital conversion. 
D)  scanning.

Question 9

The origin of digital image processing stems from:

Accepted Answer

A)  the space program. 
B)  General Electric. 
C)  Hounsfield. 
D)  the Mayo Clinic. 
A)  the space program. 
B)  General Electric. 
C)  Hounsfield. 
D)  the Mayo Clinic.

Question 10

The least complicated and most frequently used image processing technique is the:

Accepted Answer

A)  point operation. 
B)  local operation. 
C)  global operation. 
D)  geometric operation. 
A)  point operation. 
B)  local operation. 
C)  global operation. 
D)  geometric operation.

Question 11

All images displayed for viewing by humans are in the spatial frequency domain.

Accepted Answer

A) True 
 B)False

Question 12

Which type of artifact will appear on a digital image as a result of poor sampling of the analog signal?

Accepted Answer

A)  Beam hardening 
B)  Partial volume 
C)  Aliasing 
D)  Poor sampling does not create artifacts 
A)  Beam hardening 
B)  Partial volume 
C)  Aliasing 
D)  Poor sampling does not create artifacts

Question 13

Aliasing results in an artifact that appears as a moiré pattern in the image.

Accepted Answer

A) True 
 B)False

Question 14

A digital image is a discrete function.

Accepted Answer

A) True 
 B)False

Question 15

Please match the following digital image processing concepts for each group. Answer selections may be used more than once.

-A common operation in this processing technique is Fourier domain processing

Accepted Answer

A) Global operations 
B) Point operations 
C) Local operations 
D) Geometrical operations 
A) Global operations 
B) Point operations 
C) Local operations 
D) Geometrical operations

Which of the following represents the logical order in digitizing an image?

Which of the following reduces the amount of data that makes up the image?

Please match the following digital image processing concepts for each group. Answer selections may be used more than once. -In the operation, the entire input image is used to compute the value of the pixel in the output image

Visible images include all of the following except:

A digital image:

Pixels in a digital image representing information contained in a volume of tissue in the patient are referred to as a:

Digital image processing techniques have been applied successfully in not only the space program but also in medical imaging.

The process of dividing a picture into small regions called pixels is referred to as:

The origin of digital image processing stems from:

The least complicated and most frequently used image processing technique is the:

All images displayed for viewing by humans are in the spatial frequency domain.

Which type of artifact will appear on a digital image as a result of poor sampling of the analog signal?

Aliasing results in an artifact that appears as a moiré pattern in the image.

A digital image is a discrete function.

Please match the following digital image processing concepts for each group. Answer selections may be used more than once. -A common operation in this processing technique is Fourier domain processing

Computed Tomography: an Overview

Physical Principles of Computed Tomography

Data Acquisition Concepts

Image Reconstruction

Iterative Reconstruction Basics

Basic Instrumentation

Image Postprocessing and Visualization Tools

Image Quality

Radiation Dose in Computed Tomography

Multislice Computed Tomography: Physical Principles and Instrumentation

Other Technical Applications of Computed Tomography Imaging: Basic Principles

Three-Dimensional Computed Tomography: Basic Concepts

Positron Emission Tomographyct Petct and Single-Photon Emission Computed Tomographyct Spectct Hybrid Scanners

Computed Tomography of the Head, Cerebral Vessels, Neck, and Spine

Computed Tomography of the Body

Pediatric Computed Tomography

Quality Control for Computed Tomography Scanners

Filters

Exam 2: Digital Image Processing

Which of the following represents the logical order in digitizing an image?

Which of the following reduces the amount of data that makes up the image?

Please match the following digital image processing concepts for each group. Answer selections may be used more than once. -In the operation, the entire input image is used to compute the value of the pixel in the output image

Visible images include all of the following except:

A digital image:

Pixels in a digital image representing information contained in a volume of tissue in the patient are referred to as a:

Digital image processing techniques have been applied successfully in not only the space program but also in medical imaging.

The process of dividing a picture into small regions called pixels is referred to as:

The origin of digital image processing stems from:

The least complicated and most frequently used image processing technique is the:

All images displayed for viewing by humans are in the spatial frequency domain.

Which type of artifact will appear on a digital image as a result of poor sampling of the analog signal?

Aliasing results in an artifact that appears as a moiré pattern in the image.

A digital image is a discrete function.

Please match the following digital image processing concepts for each group. Answer selections may be used more than once. -A common operation in this processing technique is Fourier domain processing

Computed Tomography: an Overview

Physical Principles of Computed Tomography

Data Acquisition Concepts

Image Reconstruction

Iterative Reconstruction Basics

Basic Instrumentation

Image Postprocessing and Visualization Tools

Image Quality

Radiation Dose in Computed Tomography

Multislice Computed Tomography: Physical Principles and Instrumentation

Other Technical Applications of Computed Tomography Imaging: Basic Principles

Three-Dimensional Computed Tomography: Basic Concepts

Positron Emission Tomographyct Petct and Single-Photon Emission Computed Tomographyct Spectct Hybrid Scanners

Computed Tomography of the Head, Cerebral Vessels, Neck, and Spine

Computed Tomography of the Body

Pediatric Computed Tomography

Quality Control for Computed Tomography Scanners

Filters