Question 1

The fourth dimension involved in 4D angiography is ____________.

Accepted Answer

A)  density 
B)  opacity 
C)  pressure 
D)  time 
A)  density 
B)  opacity 
C)  pressure 
D)  time B

Question 2

The following factors must be considered before the use of virtual endoscopy becomes commonplace except:

Accepted Answer

A)  it must be better than real endoscopy. 
B)  it must be accepted by the public. 
C)  it must reduce patient dose. 
D)  radiologists must be well versed in interpreting normal versus abnormal features of anatomy being investigated. 
A)  it must be better than real endoscopy. 
B)  it must be accepted by the public. 
C)  it must reduce patient dose. 
D)  radiologists must be well versed in interpreting normal versus abnormal features of anatomy being investigated. C

Question 3

MinIP is an algorithm that only the tissues with the greatest attenuation will be displayed for viewing by an observer.

Accepted Answer

A) True 
 B)False  False

Question 4

Volume rendering provides multiple benefits for virtual CT endoscopy except its ability to:

Accepted Answer

A)  add lifelike reality to the images. 
B)  produce optimum visualization of the anatomy. 
C)  minimize partial volume-averaging artifacts. 
D)  combine SR techniques. 
A)  add lifelike reality to the images. 
B)  produce optimum visualization of the anatomy. 
C)  minimize partial volume-averaging artifacts. 
D)  combine SR techniques.

Question 5

All of the following are tissue types used for voxel classification except:

Accepted Answer

A)  bone. 
B)  connective. 
C)  fat. 
D)  soft tissue. 
A)  bone. 
B)  connective. 
C)  fat. 
D)  soft tissue.

Question 6

Equipment for 3D image processing does not include:

Accepted Answer

A)  CT scanner console. 
B)  memory and archiving computer. 
C)  MRI scanner console. 
D)  stand-alone computer workstations. 
A)  CT scanner console. 
B)  memory and archiving computer. 
C)  MRI scanner console. 
D)  stand-alone computer workstations.

Question 7

The next step after data acquisition that is intended to optimize the images before they are subject to further processing and analysis is:

Accepted Answer

A)  3D rendering. 
B)  image display. 
C)  image preprocessing. 
D)  patient preparation. 
A)  3D rendering. 
B)  image display. 
C)  image preprocessing. 
D)  patient preparation.

Question 8

Which is an example of a 3D rendering algorithm?

Accepted Answer

A)  Virtual rendering 
B)  Surface rendering (SR) 
C)  Pixel rendering 
D)  Voxel rendering 
A)  Virtual rendering 
B)  Surface rendering (SR) 
C)  Pixel rendering 
D)  Voxel rendering

Question 9

The generation of a 3D object by using computer software is called:

Accepted Answer

A)  lighting. 
B)  modeling. 
C)  rendering. 
D)  shading. 
A)  lighting. 
B)  modeling. 
C)  rendering. 
D)  shading.

Question 10

Typical 3D processing techniques include software to perform all of the following except:

Accepted Answer

A)  disarticulation. 
B)  MPR. 
C)  computer-aided diagnosis. 
D)  transparency visualization. 
A)  disarticulation. 
B)  MPR. 
C)  computer-aided diagnosis. 
D)  transparency visualization.

Question 11

Which of the following is an algorithm intended to create a thick MPR by using the average of the attenuation through the tissues of interest?

Accepted Answer

A)  AIP 
B)  Maximum intensity projection 
C)  Minimum intensity projection 
D)  Total intensity projection 
A)  AIP 
B)  Maximum intensity projection 
C)  Minimum intensity projection 
D)  Total intensity projection

Question 12

Which of the following is a volumetric imaging technique that displays bone, soft tissue, and vessels at the same time?

Accepted Answer

A)  3D rendering 
B)  Compositing 
C)  Dissection 
D)  Volumizing 
A)  3D rendering 
B)  Compositing 
C)  Dissection 
D)  Volumizing

Question 13

Which of the following algorithms uses only the tissues with the greatest attenuation?

Accepted Answer

A)  AIP 
B)  Maximum intensity projection 
C)  Minimum intensity projection 
D)  Total intensity projection 
A)  AIP 
B)  Maximum intensity projection 
C)  Minimum intensity projection 
D)  Total intensity projection

Question 14

One advantage of virtual endoscopy is that it can reduce complications that might arise from conventional endoscopy.

Accepted Answer

A) True 
 B)False

Question 15

Anatomy missed as a result of patient respiration can have what type of appearance on the final 3D image?

Accepted Answer

A)  Band artifact 
B)  Ring artifact 
C)  Stairstep artifact 
D)  Streak artifact 
A)  Band artifact 
B)  Ring artifact 
C)  Stairstep artifact 
D)  Streak artifact

Question 16

Which of the following is a technique whereby 3D surfaces are extracted from a volume or whereby voxels are extracted from a volume into another 3D segmented region?

Accepted Answer

A)  3D rendering 
B)  Image segmentation 
C)  MPR 
D)  Volume extraction 
A)  3D rendering 
B)  Image segmentation 
C)  MPR 
D)  Volume extraction

Question 17

The creation of the simulated 3D image from data collected from the object space is called:

Accepted Answer

A)  3D transformation. 
B)  lighting and shading. 
C)  modeling. 
D)  rendering. 
A)  3D transformation. 
B)  lighting and shading. 
C)  modeling. 
D)  rendering.

Question 18

Only some of the information collected from the voxels that compose each of the scanned slices goes to the computer for image reconstruction.

Accepted Answer

A) True 
 B)False

Question 19

Preprocessing involves the use of all of the following except:

Accepted Answer

A)  classification. 
B)  delineation. 
C)  image segmentation. 
D)  noise-filtering algorithms. 
A)  classification. 
B)  delineation. 
C)  image segmentation. 
D)  noise-filtering algorithms.

Question 20

Algorithms for sliding thin slabs (STS) include all of the following except:

Accepted Answer

A)  average intensity projection (AIP). 
B)  maximum intensity projection. 
C)  minimum intensity projection. 
D)  total intensity projection. 
A)  average intensity projection (AIP). 
B)  maximum intensity projection. 
C)  minimum intensity projection. 
D)  total intensity projection.

The fourth dimension involved in 4D angiography is ____________.

The following factors must be considered before the use of virtual endoscopy becomes commonplace except:

MinIP is an algorithm that only the tissues with the greatest attenuation will be displayed for viewing by an observer.

Volume rendering provides multiple benefits for virtual CT endoscopy except its ability to:

All of the following are tissue types used for voxel classification except:

Equipment for 3D image processing does not include:

The next step after data acquisition that is intended to optimize the images before they are subject to further processing and analysis is:

Which is an example of a 3D rendering algorithm?

The generation of a 3D object by using computer software is called:

Typical 3D processing techniques include software to perform all of the following except:

Which of the following is an algorithm intended to create a thick MPR by using the average of the attenuation through the tissues of interest?

Which of the following is a volumetric imaging technique that displays bone, soft tissue, and vessels at the same time?

Which of the following algorithms uses only the tissues with the greatest attenuation?

One advantage of virtual endoscopy is that it can reduce complications that might arise from conventional endoscopy.

Anatomy missed as a result of patient respiration can have what type of appearance on the final 3D image?

Which of the following is a technique whereby 3D surfaces are extracted from a volume or whereby voxels are extracted from a volume into another 3D segmented region?

The creation of the simulated 3D image from data collected from the object space is called:

Only some of the information collected from the voxels that compose each of the scanned slices goes to the computer for image reconstruction.

Preprocessing involves the use of all of the following except:

Algorithms for sliding thin slabs (STS) include all of the following except:

Computed Tomography: an Overview

Digital Image Processing

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

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 13: Three-Dimensional Computed Tomography: Basic Concepts

The fourth dimension involved in 4D angiography is ____________.

The following factors must be considered before the use of virtual endoscopy becomes commonplace except:

MinIP is an algorithm that only the tissues with the greatest attenuation will be displayed for viewing by an observer.

Volume rendering provides multiple benefits for virtual CT endoscopy except its ability to:

All of the following are tissue types used for voxel classification except:

Equipment for 3D image processing does not include:

The next step after data acquisition that is intended to optimize the images before they are subject to further processing and analysis is:

Which is an example of a 3D rendering algorithm?

The generation of a 3D object by using computer software is called:

Typical 3D processing techniques include software to perform all of the following except:

Which of the following is an algorithm intended to create a thick MPR by using the average of the attenuation through the tissues of interest?

Which of the following is a volumetric imaging technique that displays bone, soft tissue, and vessels at the same time?

Which of the following algorithms uses only the tissues with the greatest attenuation?

One advantage of virtual endoscopy is that it can reduce complications that might arise from conventional endoscopy.

Anatomy missed as a result of patient respiration can have what type of appearance on the final 3D image?

Which of the following is a technique whereby 3D surfaces are extracted from a volume or whereby voxels are extracted from a volume into another 3D segmented region?

The creation of the simulated 3D image from data collected from the object space is called:

Only some of the information collected from the voxels that compose each of the scanned slices goes to the computer for image reconstruction.

Preprocessing involves the use of all of the following except:

Algorithms for sliding thin slabs (STS) include all of the following except:

Computed Tomography: an Overview

Digital Image Processing

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

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