Question 1

The creation of the simulated three-dimensional image from data collected from the object space is called:

Accepted Answer

A) three-dimensional transformation 
B) lighting and shading 
C) modeling 
D) rendering

Question 2

Which of the following can be used to evaluate hollow structures such as the colon and the bronchi and can create an approach that allows for a "fly through"?

Accepted Answer

A) maximum volume rendering 
B) minimum volume rendering 
C) perspective volume rendering 
D) volume rendering

Question 3

Slice imaging is the most complex of all three-dimensional imaging.

Accepted Answer

A) True 
 B)False

Question 4

In surface rendering, surface formation is the first step, and it involves the operation of contouring.

Accepted Answer

A) True 
 B)False

Question 5

Ray tracing involves a mathematical ray sent from the observer's eye through the two-dimensional computer screen to pass through the three-dimensional volume that contains opaque and transparent objects.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

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

Question 7

Stages of volume rendering include: 
I. modeling
II. preprocessing
III. rendering

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) I, II, and III

Question 8

The generation of a three-dimensional object by using computer software is called:

Accepted Answer

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

Question 9

Which type of three-dimensional imaging approach produces a true three-dimensional visualization?

Accepted Answer

A) modeling imaging 
B) projective imaging 
C) slice imaging 
D) volume imaging

Question 10

Typical three-dimensional processing techniques include software to perform all of the following except:

Accepted Answer

A) disarticulation 
B) multiplanar reconstruction 
C) computer-aided diagnosis 
D) transparency visualization

Question 11

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

Accepted Answer

A) average intensity projection 
B) maximum intensity projection 
C) minimum intensity projection 
D) total intensity projection

Question 12

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 13

In the scene (xyz) coordinate system, the axes are positioned at __________ angles.

Accepted Answer

A) 30-degree 
B) 45-degree 
C) 60-degree 
D) 90-degree

Question 14

Anatomy missed as a result of patient respiration can have what type of appearance on the final three-dimensional image?

Accepted Answer

A) band artifact 
B) ring artifact 
C) stairstep artifact 
D) streak artifact

Question 15

The development of computed tomographic angiography and three-dimensional imaging has not proved effective in the evaluation of cerebral aneurysms and arteriovenous malformations.

Accepted Answer

A) True 
 B)False

Question 16

The x, y, and z coordinates define a space in which multidimensional data are represented, which is called the: 
I. three-dimensional space
II. cartesian space
III. scene space

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) I, II, and III

Question 17

Computer-aided diagnosis helps the observer view three-dimensional space by displaying the front, back, top, and bottom of an object.

Accepted Answer

A) True 
 B)False

Question 18

Voxel-based processing makes determinations about each voxel and decides to what degree each should contribute to the final three-dimensional image.

Accepted Answer

A) True 
 B)False

Question 19

The most familiar coordinate system is the:

Accepted Answer

A) display coordinate system 
B) object coordinate system 
C) scanner coordinate system 
D) scene coordinate system

Question 20

All of the following are shading algorithms except:

Accepted Answer

A) flat shading 
B) Gouraud shading 
C) Phong shading 
D) polygonal shading

Exam 14: Three-Dimensional Computed Tomography: Basic Concepts

The creation of the simulated three-dimensional image from data collected from the object space is called:

Which of the following can be used to evaluate hollow structures such as the colon and the bronchi and can create an approach that allows for a "fly through"?

Slice imaging is the most complex of all three-dimensional imaging.

In surface rendering, surface formation is the first step, and it involves the operation of contouring.

Ray tracing involves a mathematical ray sent from the observer's eye through the two-dimensional computer screen to pass through the three-dimensional volume that contains opaque and transparent objects.

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

Stages of volume rendering include: I. modeling II. preprocessing III. rendering

The generation of a three-dimensional object by using computer software is called:

Which type of three-dimensional imaging approach produces a true three-dimensional visualization?

Typical three-dimensional processing techniques include software to perform all of the following except:

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

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

In the scene (xyz) coordinate system, the axes are positioned at __________ angles.

Anatomy missed as a result of patient respiration can have what type of appearance on the final three-dimensional image?

The development of computed tomographic angiography and three-dimensional imaging has not proved effective in the evaluation of cerebral aneurysms and arteriovenous malformations.

The x, y, and z coordinates define a space in which multidimensional data are represented, which is called the: I. three-dimensional space II. cartesian space III. scene space

Computer-aided diagnosis helps the observer view three-dimensional space by displaying the front, back, top, and bottom of an object.

Voxel-based processing makes determinations about each voxel and decides to what degree each should contribute to the final three-dimensional image.

The most familiar coordinate system is the:

All of the following are shading algorithms except: