Question 1

The radiation sensors convert ___________ to ___________.

Accepted Answer

A)  light; X-ray photons 
B)  X-ray photons; light 
C)  light; electrical signals 
D)  electric signals; light 
A)  light; X-ray photons 
B)  X-ray photons; light 
C)  light; electrical signals 
D)  electric signals; light B

Question 2

The CT detector consists of each of these components except:

Accepted Answer

A)  radiation sensor. 
B)  photodiodes. 
C)  analog to digital converter (AD
C) . 
D)  high-frequency generator. 
A)  radiation sensor. 
B)  photodiodes. 
C)  analog to digital converter (AD
C) . 
D)  high-frequency generator. A

Question 3

An early pioneer in the development of the technique of volume rendering was Dr. Willi A. Kalender.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following is not a parameter of image quality?

Accepted Answer

A)  Spatial resolution 
B)  Patient dose 
C)  Contrast resolution 
D)  Noise 
A)  Spatial resolution 
B)  Patient dose 
C)  Contrast resolution 
D)  Noise

Question 5

If the X-ray prepatient collimation width is 24 cm and the scanner has a four-row detector array, what is the detector row collimation?

Accepted Answer

A)  4 mm 
B)  5 mm 
C)  6 mm 
D)  7 mm 
A)  4 mm 
B)  5 mm 
C)  6 mm 
D)  7 mm

Question 6

What is the term used to describe the flipped view used for interpolated reconstruction?

Accepted Answer

A)  Complementary data 
B)  Opposed data 
C)  Opposite data 
D)  Reciprocal data 
A)  Complementary data 
B)  Opposed data 
C)  Opposite data 
D)  Reciprocal data

Question 7

The first step in volume scanning is analog to digital conversion.

Accepted Answer

A) True 
 B)False

Question 8

All the following are problems that can occur from data acquisition with spiral geometry except:

Accepted Answer

A)  localization of a particular slice is difficult. 
B)  inconsistent projection data. 
C)  increased patient dose. 
D)  streak artifacts can occur. 
A)  localization of a particular slice is difficult. 
B)  inconsistent projection data. 
C)  increased patient dose. 
D)  streak artifacts can occur.

Question 9

In an MSCT scanner, what type of algorithm can be used if the number of detector rows is small?

Accepted Answer

A)  Cone-beam reconstruction 
B)  Fan-beam reconstruction 
C)  x-axis reconstruction 
D)  z-axis reconstruction 
A)  Cone-beam reconstruction 
B)  Fan-beam reconstruction 
C)  x-axis reconstruction 
D)  z-axis reconstruction

Question 10

New capabilities created as a result of the creation of spiral/helical CT include each of the following applications except:

Accepted Answer

A)  CT endoscopy. 
B)  real-time CT fluoroscopy. 
C)  stroke imaging. 
D)  CT angiography. 
A)  CT endoscopy. 
B)  real-time CT fluoroscopy. 
C)  stroke imaging. 
D)  CT angiography.

Question 11

Which of the following is not a physical property of detectors?

Accepted Answer

A)  High luminescence efficiency 
B)  Large dynamic range 
C)  Small afterglow 
D)  Recyclable value 
A)  High luminescence efficiency 
B)  Large dynamic range 
C)  Small afterglow 
D)  Recyclable value

Question 12

In MSCT, the slice thickness is not determined by which factor?

Accepted Answer

A)  Volume coverage 
B)  Beam width in the z-axis 
C)  Pitch 
D)  Shape and width of the reconstruction filter 
A)  Volume coverage 
B)  Beam width in the z-axis 
C)  Pitch 
D)  Shape and width of the reconstruction filter

Question 13

What term is used to describe the resorting of the 3D data collected from the cone-beam acquisition to a set of 2D fan-beam data?

Accepted Answer

A)  Binning 
B)  Rebinning 
C)  Reformatting 
D)  Sampling 
A)  Binning 
B)  Rebinning 
C)  Reformatting 
D)  Sampling

Question 14

All of the following are requirements for volume scanning except:

Accepted Answer

A)  continuous couch movement. 
B)  increased cooling capacity. 
C)  slip-ring technology. 
D)  tube memory. 
A)  continuous couch movement. 
B)  increased cooling capacity. 
C)  slip-ring technology. 
D)  tube memory.

Question 15

Which method of CT scanning does interscan delay occurs?

Accepted Answer

A)  Single-slice CT (SSCT) scanner 
B)  Slice-by-slice CT scanner 
C)  Volume CT scanner 
D)  Multislice CT (MSCT) scanner 
A)  Single-slice CT (SSCT) scanner 
B)  Slice-by-slice CT scanner 
C)  Volume CT scanner 
D)  Multislice CT (MSCT) scanner

Question 16

A pitch greater than 1 will result in an increased dose.

Accepted Answer

A) True 
 B)False

Question 17

What year was the first computed tomography (CT) scanner able to perform volume data acquisition introduced?

Accepted Answer

A)  1988 
B)  1989 
C)  1990 
D)  1991 
A)  1988 
B)  1989 
C)  1990 
D)  1991

Question 18

What is the ideal pitch in spiral/helical CT?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 19

All of these components are rotating parts of the spiral/helical CT scanner except the:

Accepted Answer

A)  X-ray tube. 
B)  high-voltage generator. 
C)  detectors. 
D)  front-end memory. 
A)  X-ray tube. 
B)  high-voltage generator. 
C)  detectors. 
D)  front-end memory.

Question 20

The computer systems of MSCT scanners have hardware that provides all of the following except:

Accepted Answer

A)  high-speed processing. 
B)  image communication. 
C)  image reconstruction. 
D)  postprocessing operations. 
A)  high-speed processing. 
B)  image communication. 
C)  image reconstruction. 
D)  postprocessing operations.

The radiation sensors convert _ to _.

The CT detector consists of each of these components except:

An early pioneer in the development of the technique of volume rendering was Dr. Willi A. Kalender.

Which of the following is not a parameter of image quality?

If the X-ray prepatient collimation width is 24 cm and the scanner has a four-row detector array, what is the detector row collimation?

What is the term used to describe the flipped view used for interpolated reconstruction?

The first step in volume scanning is analog to digital conversion.

All the following are problems that can occur from data acquisition with spiral geometry except:

In an MSCT scanner, what type of algorithm can be used if the number of detector rows is small?

New capabilities created as a result of the creation of spiral/helical CT include each of the following applications except:

Which of the following is not a physical property of detectors?

In MSCT, the slice thickness is not determined by which factor?

What term is used to describe the resorting of the 3D data collected from the cone-beam acquisition to a set of 2D fan-beam data?

All of the following are requirements for volume scanning except:

Which method of CT scanning does interscan delay occurs?

A pitch greater than 1 will result in an increased dose.

What year was the first computed tomography (CT) scanner able to perform volume data acquisition introduced?

What is the ideal pitch in spiral/helical CT?

All of these components are rotating parts of the spiral/helical CT scanner except the:

The computer systems of MSCT scanners have hardware that provides 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

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 11: Multislice Computed Tomography: Physical Principles and Instrumentation

The radiation sensors convert ___________ to ___________.

The CT detector consists of each of these components except:

An early pioneer in the development of the technique of volume rendering was Dr. Willi A. Kalender.

Which of the following is not a parameter of image quality?

If the X-ray prepatient collimation width is 24 cm and the scanner has a four-row detector array, what is the detector row collimation?

What is the term used to describe the flipped view used for interpolated reconstruction?

The first step in volume scanning is analog to digital conversion.

All the following are problems that can occur from data acquisition with spiral geometry except:

In an MSCT scanner, what type of algorithm can be used if the number of detector rows is small?

New capabilities created as a result of the creation of spiral/helical CT include each of the following applications except:

Which of the following is not a physical property of detectors?

In MSCT, the slice thickness is not determined by which factor?

What term is used to describe the resorting of the 3D data collected from the cone-beam acquisition to a set of 2D fan-beam data?

All of the following are requirements for volume scanning except:

Which method of CT scanning does interscan delay occurs?

A pitch greater than 1 will result in an increased dose.

What year was the first computed tomography (CT) scanner able to perform volume data acquisition introduced?

What is the ideal pitch in spiral/helical CT?

All of these components are rotating parts of the spiral/helical CT scanner except the:

The computer systems of MSCT scanners have hardware that provides 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

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

The radiation sensors convert _ to _.