Question 1

Filtered back projection is used to:
1) analyze the raw data for one slice
2) assess image quality for multiple slices
3) to determine the µ of each voxel

Accepted Answer

A)  analyze the raw data for one slice and assess image quality for multiple slices only 
B)  analyze the raw data for one slice and to determine the µ of each voxel only 
C)  assess image quality for multiple slices and to determine the µ of each voxel only 
D)  analyze the raw data for one slice, assess image quality for multiple slices, and to determine the µ of each voxel 
A)  analyze the raw data for one slice and assess image quality for multiple slices only 
B)  analyze the raw data for one slice and to determine the µ of each voxel only 
C)  assess image quality for multiple slices and to determine the µ of each voxel only 
D)  analyze the raw data for one slice, assess image quality for multiple slices, and to determine the µ of each voxel

Question 2

The composite electrical signal based on transmission values is the

Accepted Answer

A)  view 
B)  ray 
C)  profile 
D)  all of these 
A)  view 
B)  ray 
C)  profile 
D)  all of these

Question 3

As the WW changes, the CT image's

Accepted Answer

A)  contrast changes 
B)  brightness changes 
C)  spatial resolution changes 
D)  distortion changes 
A)  contrast changes 
B)  brightness changes 
C)  spatial resolution changes 
D)  distortion changes

Question 4

The CT system's uniformity can be determined by seeing if

Accepted Answer

A)  the CT number of water throughout a container is 0 
B)  the CT number of water throughout a container is -1000 
C)  the CT number of water throughout a container is 1000 
D)  none of these 
A)  the CT number of water throughout a container is 0 
B)  the CT number of water throughout a container is -1000 
C)  the CT number of water throughout a container is 1000 
D)  none of these

Question 5

The scintillation-type detector is commonly used in today's CT scanner.

Accepted Answer

A) True 
 B)False

Question 6

As a result of using multiple rows of detectors, the x-ray beam becomes wider to accommodate for the divergence of the x-rays and is called

Accepted Answer

A)  spiral CT 
B)  multislice CT 
C)  slip-ring technology 
D)  cone beam 
A)  spiral CT 
B)  multislice CT 
C)  slip-ring technology 
D)  cone beam

Question 7

The CT gantry houses the

Accepted Answer

A)  x-ray tube 
B)  detector array 
C)  collimators 
D)  data acquisition system (DAS) 
E)  all of these 
A)  x-ray tube 
B)  detector array 
C)  collimators 
D)  data acquisition system (DAS) 
E)  all of these

Question 8

Slices of anatomy that are reformatted to go from front to back are

Accepted Answer

A)  coronal 
B)  sagittal 
C)  axial 
D)  posterior 
A)  coronal 
B)  sagittal 
C)  axial 
D)  posterior

Question 9

With spiral CT imaging, the relationship between slice thickness and table travel during one tube rotation is the

Accepted Answer

A)  protocol 
B)  scan field of view (SFOV) 
C)  display field of view (DFOV) 
D)  pitch 
A)  protocol 
B)  scan field of view (SFOV) 
C)  display field of view (DFOV) 
D)  pitch

Question 10

This artifact is specific to third-generation scanners.

Accepted Answer

A)  Streak artifact 
B)  Ring artifact 
C)  Partial-volume artifact 
D)  Beam-hardening artifact 
A)  Streak artifact 
B)  Ring artifact 
C)  Partial-volume artifact 
D)  Beam-hardening artifact

Question 11

Electron-beam CT does not use an x-ray tube.

Accepted Answer

A) True 
 B)False

Question 12

The area of anatomy seen on the monitor is the

Accepted Answer

A)  protocol 
B)  scan field of view (SFOV) 
C)  display field of view (DFOV) 
D)  pitch 
A)  protocol 
B)  scan field of view (SFOV) 
C)  display field of view (DFOV) 
D)  pitch

Filtered back projection is used to: 1) analyze the raw data for one slice 2) assess image quality for multiple slices 3) to determine the µ of each voxel

The composite electrical signal based on transmission values is the

As the WW changes, the CT image's

The CT system's uniformity can be determined by seeing if

The scintillation-type detector is commonly used in today's CT scanner.

As a result of using multiple rows of detectors, the x-ray beam becomes wider to accommodate for the divergence of the x-rays and is called

The CT gantry houses the

Slices of anatomy that are reformatted to go from front to back are

With spiral CT imaging, the relationship between slice thickness and table travel during one tube rotation is the

This artifact is specific to third-generation scanners.

Electron-beam CT does not use an x-ray tube.

The area of anatomy seen on the monitor is the

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Image Quality and Characteristics

Digital Image Receptors

Radiographic Exposure Technique

Scatter Control

Exposure Technique Selection

Film-Screen Imaging

Fluoroscopic Imaging

Additional Equipment

Filters

Exam 17: Computed Tomography

Filtered back projection is used to: 1) analyze the raw data for one slice 2) assess image quality for multiple slices 3) to determine the µ of each voxel

The composite electrical signal based on transmission values is the

As the WW changes, the CT image's

The CT system's uniformity can be determined by seeing if

The scintillation-type detector is commonly used in today's CT scanner.

As a result of using multiple rows of detectors, the x-ray beam becomes wider to accommodate for the divergence of the x-rays and is called

The CT gantry houses the

Slices of anatomy that are reformatted to go from front to back are

With spiral CT imaging, the relationship between slice thickness and table travel during one tube rotation is the

This artifact is specific to third-generation scanners.

Electron-beam CT does not use an x-ray tube.

The area of anatomy seen on the monitor is the

Introduction to the Imaging Sciences

Structure of the Atom

Electromagnetic and Particulate Radiation

The X-Ray Circuit

The X-Ray Tube

X-Ray Production

X-Ray Interactions With Matter

Image Production

Image Quality and Characteristics

Digital Image Receptors

Radiographic Exposure Technique

Scatter Control

Exposure Technique Selection

Film-Screen Imaging

Fluoroscopic Imaging

Additional Equipment

Filters