Question 1

CT scanner manufacturers do not offer any information regarding QC testing.

Accepted Answer

A) True 
 B)False  False

Question 2

QC tests, test results, and interpretation of test results should be:

Accepted Answer

A)  recorded in a QC logbook. 
B)  recorded on pieces of paper. 
C)  recorded on the bulletin board beside the CT scanner. 
D)  recorded in the positioning notebook of the technologist. 
A)  recorded in a QC logbook. 
B)  recorded on pieces of paper. 
C)  recorded on the bulletin board beside the CT scanner. 
D)  recorded in the positioning notebook of the technologist. A

Question 3

It is unnecessary to perform QC tests after a major component has been replaced on a CT scanner.

Accepted Answer

A) True 
 B)False  False

Question 4

The average CT number of water QC test should be done:

Accepted Answer

A)  daily. 
B)  weekly. 
C)  monthly. 
D)  annually. 
A)  daily. 
B)  weekly. 
C)  monthly. 
D)  annually.

Question 5

The following are all basic tenets of a QC program for CT scanners except:

Accepted Answer

A)  tests should be performed on a regular period basis. 
B)  prompt interpretation of the results. 
C)  faithful record keeping. 
D)  phantoms for QC measurements must be stored in a controlled environment. 
A)  tests should be performed on a regular period basis. 
B)  prompt interpretation of the results. 
C)  faithful record keeping. 
D)  phantoms for QC measurements must be stored in a controlled environment.

Question 6

The following QC tests should be done biannually except:

Accepted Answer

A)  high-contrast resolution 
B)  low-contrast resolution 
C)  light field accuracy 
D)  flatness of CT number 
A)  high-contrast resolution 
B)  low-contrast resolution 
C)  light field accuracy 
D)  flatness of CT number

Question 7

QC tests can be performed by all of the following except:

Accepted Answer

A)  technologists. 
B)  medical physicists. 
C)  QC technicians. 
D)  department aides. 
A)  technologists. 
B)  medical physicists. 
C)  QC technicians. 
D)  department aides.

Question 8

Which tests the performance of a computed tomography (CT) scanner on a number of parameters and compares the performance with a standard?

Accepted Answer

A)  Quality administration 
B)  Quality assurance 
C)  Quality control (Q
C)  
D)  Quality maintenance 
A)  Quality administration 
B)  Quality assurance 
C)  Quality control (Q
C)  
D)  Quality maintenance

Question 9

Quantitative CT (QCT) phantoms are used to assess the CT dose output.

Accepted Answer

A) True 
 B)False

Question 10

QC test results do not have to be interpreted as soon as the tests are completed.

Accepted Answer

A) True 
 B)False

Question 11

Techniques chosen for QC measures should match frequently used clinical techniques.

Accepted Answer

A) True 
 B)False

Question 12

The tolerance limit for a CT number calibration QC test is:

Accepted Answer

A)  ±3 CT numbers. 
B)  ±5 CT numbers. 
C)  ±8 CT numbers. 
D)  no tolerance limit has been established. 
A)  ±3 CT numbers. 
B)  ±5 CT numbers. 
C)  ±8 CT numbers. 
D)  no tolerance limit has been established.

Question 13

Regulatory agencies do not require any standard of quality.

Accepted Answer

A) True 
 B)False

Question 14

QC tests must be performed on a routine basis.

Accepted Answer

A) True 
 B)False

Question 15

Record keeping is not an important consideration in a QC program.

Accepted Answer

A) True 
 B)False

Question 16

What term describes performance standards as a level under favorable circumstances at which a facility should work if feasible?

Accepted Answer

A)  Achievable 
B)  Tolerable 
C)  Acceptable 
D)  Possible 
A)  Achievable 
B)  Tolerable 
C)  Acceptable 
D)  Possible

Question 17

Water phantoms are not used for QC tests.

Accepted Answer

A) True 
 B)False

Question 18

A possible cause of failure for the high-contrast resolution QC test is that of an enlarged focal spot in the X-ray tube.

Accepted Answer

A) True 
 B)False

Question 19

The first step in any QC is error correction.

Accepted Answer

A) True 
 B)False

Question 20

All of the following are possible causes of failure for the standard deviation of the CT number except:

Accepted Answer

A)  electronic noise from amplifiers. 
B)  decreased dose. 
C)  electronic noise from the analog to digital converters 
D)  miscalibration of the algorithm 
A)  electronic noise from amplifiers. 
B)  decreased dose. 
C)  electronic noise from the analog to digital converters 
D)  miscalibration of the algorithm

CT scanner manufacturers do not offer any information regarding QC testing.

QC tests, test results, and interpretation of test results should be:

It is unnecessary to perform QC tests after a major component has been replaced on a CT scanner.

The average CT number of water QC test should be done:

The following are all basic tenets of a QC program for CT scanners except:

The following QC tests should be done biannually except:

QC tests can be performed by all of the following except:

Which tests the performance of a computed tomography (CT) scanner on a number of parameters and compares the performance with a standard?

Quantitative CT (QCT) phantoms are used to assess the CT dose output.

QC test results do not have to be interpreted as soon as the tests are completed.

Techniques chosen for QC measures should match frequently used clinical techniques.

The tolerance limit for a CT number calibration QC test is:

Regulatory agencies do not require any standard of quality.

QC tests must be performed on a routine basis.

Record keeping is not an important consideration in a QC program.

What term describes performance standards as a level under favorable circumstances at which a facility should work if feasible?

Water phantoms are not used for QC tests.

A possible cause of failure for the high-contrast resolution QC test is that of an enlarged focal spot in the X-ray tube.

The first step in any QC is error correction.

All of the following are possible causes of failure for the standard deviation of the CT number 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

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

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Exam 18: Quality Control for Computed Tomography Scanners

CT scanner manufacturers do not offer any information regarding QC testing.

QC tests, test results, and interpretation of test results should be:

It is unnecessary to perform QC tests after a major component has been replaced on a CT scanner.

The average CT number of water QC test should be done:

The following are all basic tenets of a QC program for CT scanners except:

The following QC tests should be done biannually except:

QC tests can be performed by all of the following except:

Which tests the performance of a computed tomography (CT) scanner on a number of parameters and compares the performance with a standard?

Quantitative CT (QCT) phantoms are used to assess the CT dose output.

QC test results do not have to be interpreted as soon as the tests are completed.

Techniques chosen for QC measures should match frequently used clinical techniques.

The tolerance limit for a CT number calibration QC test is:

Regulatory agencies do not require any standard of quality.

QC tests must be performed on a routine basis.

Record keeping is not an important consideration in a QC program.

What term describes performance standards as a level under favorable circumstances at which a facility should work if feasible?

Water phantoms are not used for QC tests.

A possible cause of failure for the high-contrast resolution QC test is that of an enlarged focal spot in the X-ray tube.

The first step in any QC is error correction.

All of the following are possible causes of failure for the standard deviation of the CT number 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

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

Filters