Question 1

The uniformity of the CT number of water should not vary by more than ____ HU from the center of the phantom to the periphery.

Accepted Answer

A)  2 
B)  3 
C)  5 
D)  10 
A)  2 
B)  3 
C)  5 
D)  10 C

Question 2

The CTDIvol pass/fail criterion for an adult abdomen is ____ mGy.

Accepted Answer

A)  20 
B)  40 
C)  30 
D)  80 
A)  20 
B)  40 
C)  30 
D)  80 C

Question 3

For ACR CT accreditation, the Water CT Number and Standard Deviation (Noise) should be evaluated by the CT technologist

Accepted Answer

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

Question 4

For a slice thickness of 5 mm or less, the slice thickness should not vary by more than ____ mm.

Accepted Answer

A)  0.5 
B)  1.0 
C)  2.0 
D)  3.0 
A)  0.5 
B)  1.0 
C)  2.0 
D)  3.0

Question 5

A visual inspection of a CT unit should be evaluated at least _____ for ACR accreditation programs.

Accepted Answer

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

Question 6

Patient dose values for CT scans should remain within ____ of the manufacturer's specifications.

Accepted Answer

A) $\pm$2% 
B)  $\pm$5% 
C)  $\pm$10% 
D)  $\pm$20% 
A) $\pm$2% 
B)  $\pm$5% 
C)  $\pm$10% 
D)  $\pm$20%

Question 7

The CT number of water should not deviate by more than ____ CT numbers from 0.

Accepted Answer

A)  2 
B)  3 
C)  5 
D)  10 
A)  2 
B)  3 
C)  5 
D)  10

Question 8

Section thickness should not vary by more than ____ mm for sections greater than 5 mm.

Accepted Answer

A)  $\pm$0.5 
B) $\pm$1.0 
C)  $\pm$2.0 
D)  $\pm$5.0 
A)  $\pm$0.5 
B) $\pm$1.0 
C)  $\pm$2.0 
D)  $\pm$5.0

Question 9

The laser light field and radiation field should coincide to within ____ mm.

Accepted Answer

A)  0.5 
B)  1.0 
C)  2.0 
D)  5.0 
A)  0.5 
B)  1.0 
C)  2.0 
D)  5.0

Question 10

The minimum distance between two objects that allows them to be seen as separate and distinct would define what CT imaging parameter?

Accepted Answer

A)  Low-contrast resolution 
B)  Uniformity 
C)  High-contrast resolution 
D)  Image noise 
A)  Low-contrast resolution 
B)  Uniformity 
C)  High-contrast resolution 
D)  Image noise

The uniformity of the CT number of water should not vary by more than ____ HU from the center of the phantom to the periphery.

The CTDI_vol pass/fail criterion for an adult abdomen is ____ mGy.

For ACR CT accreditation, the Water CT Number and Standard Deviation (Noise) should be evaluated by the CT technologist

For a slice thickness of 5 mm or less, the slice thickness should not vary by more than ____ mm.

A visual inspection of a CT unit should be evaluated at least _____ for ACR accreditation programs.

Patient dose values for CT scans should remain within ____ of the manufacturer's specifications.

The CT number of water should not deviate by more than ____ CT numbers from 0.

Section thickness should not vary by more than ____ mm for sections greater than 5 mm.

The laser light field and radiation field should coincide to within ____ mm.

The minimum distance between two objects that allows them to be seen as separate and distinct would define what CT imaging parameter?

Introduction to Quality Management

Quality Improvement Tools and Procedures

Image Quality

Filmscreen Image Receptor Systems

Quality Control of X-Ray Generators and Ancillary Radiographic Equipment

Radiographic Image Artifacts

Quality Control of Fluoroscopic Equipment

Digital Radiographic and Fluoroscopic Systems and Advanced Imaging Equipment

Mammographic Quality Standards

Quality Control for Magnetic Resonance Imaging Equipment

Ultrasound Equipment Quality Assurance

Quality Assurance in Nuclear Medicine

Filters

Exam 10: Quality Control in Computed Tomography

The uniformity of the CT number of water should not vary by more than ____ HU from the center of the phantom to the periphery.

The CTDIvol pass/fail criterion for an adult abdomen is ____ mGy.

For ACR CT accreditation, the Water CT Number and Standard Deviation (Noise) should be evaluated by the CT technologist

For a slice thickness of 5 mm or less, the slice thickness should not vary by more than ____ mm.

A visual inspection of a CT unit should be evaluated at least _____ for ACR accreditation programs.

Patient dose values for CT scans should remain within ____ of the manufacturer's specifications.

The CT number of water should not deviate by more than ____ CT numbers from 0.

Section thickness should not vary by more than ____ mm for sections greater than 5 mm.

The laser light field and radiation field should coincide to within ____ mm.

The minimum distance between two objects that allows them to be seen as separate and distinct would define what CT imaging parameter?

Introduction to Quality Management

Quality Improvement Tools and Procedures

Image Quality

Filmscreen Image Receptor Systems

Quality Control of X-Ray Generators and Ancillary Radiographic Equipment

Radiographic Image Artifacts

Quality Control of Fluoroscopic Equipment

Digital Radiographic and Fluoroscopic Systems and Advanced Imaging Equipment

Mammographic Quality Standards

Quality Control for Magnetic Resonance Imaging Equipment

Ultrasound Equipment Quality Assurance

Quality Assurance in Nuclear Medicine

Filters

The CTDI_vol pass/fail criterion for an adult abdomen is ____ mGy.