Question 1

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 2

The purpose of 3D imaging is to use large amounts of data collected from the patient to provide both qualitative and quantitative information.

Accepted Answer

A) True 
 B)False

Question 3

In the semiautomatic mode of __________, the user selects objects to include the data set through the use of windowing.

Accepted Answer

A)  3D rendering 
B)  image segmentation 
C)  SR 
D)  volume extraction

Question 4

Computed tomographic colonoscopy is an integral tool for the examination of colorectal polyp detection.

Accepted Answer

A) True 
 B)False

Question 5

Semiautomatic segmentation allows the operator to select objects to be included in the VR image data set through the use of windowing.

Accepted Answer

A) True 
 B)False

Question 6

Which type of 3D imaging approach generates multiplanar reconstruction (MPR) (coronal and sagittal) images?

Accepted Answer

A)  Modeling imaging 
B)  Projective imaging 
C)  Slice imaging 
D)  Volume imaging

Question 7

What technique is used to virtually unroll, slice open, and display a 3D model of the colon?

Accepted Answer

A)  Virtual cropping 
B)  Virtual cutting 
C)  Virtual dissection 
D)  Virtual splicing

Question 8

Describe the role of the radiological technologist in 3D CT imaging.

Accepted Answer

The answer of Describe the role of the radiological technologist...

Question 9

What is the first step in virtual endoscopy imaging?

Accepted Answer

A)  Careful selection of scan parameters 
B)  Image segmentation 
C)  3D rendering 
D)  Image display

Question 10

Slice imaging is the most complex of all 3D imaging.

Accepted Answer

A) True 
 B)False

Question 11

Computer-aided diagnosis helps the observer view 3D space by displaying the front, back, top, and bottom of an object.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is not a step in the processing of an object-based model into a simulated 3D image?

Accepted Answer

A)  Segmentation 
B)  Object delineation 
C)  Preprocessing 
D)  Rendering

Question 13

Volume rendering produces 3D images that have a better image quality and provide more information compared with SR.

Accepted Answer

A) True 
 B)False

Question 14

Ray tracing involves a mathematical ray sent from the observer's eye through the 2D computer screen to pass through the 3D volume that contains opaque and transparent objects.

Accepted Answer

A) True 
 B)False

Question 15

What space does the x, y, and z coordinates define in which multidimensional data are represented?

Accepted Answer

A)  Matrix 
B)  Virtual space 
C)  Scene space 
D)  Blank space

Question 16

Clinical applications of 3D imaging in CT include all of the following except:

Accepted Answer

A)  craniomaxillofacial complex. 
B)  endocrine system. 
C)  gastrointestinal (GI) system. 
D)  pulmonary system.

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

Most experts agree that SR is not best suited for use in CTVR imaging.

Accepted Answer

A) True 
 B)False

Question 19

Which algorithm provides a valuable perspective in defining lesions for surgical planning or detecting subtle small airway diseases?

Accepted Answer

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

Question 20

All of the following are volume imaging methods except:

Accepted Answer

A)  anaglyphic. 
B)  holography. 
C)  polygonal methods. 
D)  varifocal mirrors.

Exam 13: Three-Dimensional Computed Tomography: Basic Concepts

The most familiar coordinate system is the:

The purpose of 3D imaging is to use large amounts of data collected from the patient to provide both qualitative and quantitative information.

In the semiautomatic mode of __________, the user selects objects to include the data set through the use of windowing.

Computed tomographic colonoscopy is an integral tool for the examination of colorectal polyp detection.

Semiautomatic segmentation allows the operator to select objects to be included in the VR image data set through the use of windowing.

Which type of 3D imaging approach generates multiplanar reconstruction (MPR) (coronal and sagittal) images?

What technique is used to virtually unroll, slice open, and display a 3D model of the colon?

Describe the role of the radiological technologist in 3D CT imaging.

What is the first step in virtual endoscopy imaging?

Slice imaging is the most complex of all 3D imaging.

Computer-aided diagnosis helps the observer view 3D space by displaying the front, back, top, and bottom of an object.

Which of the following is not a step in the processing of an object-based model into a simulated 3D image?

Volume rendering produces 3D images that have a better image quality and provide more information compared with SR.

Ray tracing involves a mathematical ray sent from the observer's eye through the 2D computer screen to pass through the 3D volume that contains opaque and transparent objects.

What space does the x, y, and z coordinates define in which multidimensional data are represented?

Clinical applications of 3D imaging in CT include all of the following except:

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

Most experts agree that SR is not best suited for use in CTVR imaging.

Which algorithm provides a valuable perspective in defining lesions for surgical planning or detecting subtle small airway diseases?

All of the following are volume imaging methods except: