Quality Control

Question 1

What is Quality Control?

Answer 1

set of comprehensive activities that are designed to maintain and monitor systems

Question 2

Quality Control standards for image acquisition, processing and equipment maintenance are all contributing factors to what?

Answer 2

Total Quality Management aslo know as Continuous Quality Improvement (CQI)

Question 3

What is the quality control for beam restriction light field to radiation field alignment?

Answer 3

+/- 2%

Question 4

What is the quality control for positive beam limitation

Answer 4

Automatic light field 2% of the SID

Question 5

Linearity:

What is the quality control for measuring the mR/mAs output

Answer 5

variation cannot exceed +/- 10 %

Question 6

Reproducibility:

What is the quality control for measuring the kVp?

Answer 6

should be reproducible to within +/- 5%

Question 7

Exposure Timer Test:
spin top test (single phase)
visible number of dots equal to the exposure timer setting. What variaiton in dots?

Answer 7

1 or 2 dots indicates a time error

Question 8

Exposure Timer Test:
synchronous timer ( three phase)
measurement of the degrees of what?

Answer 8

arch density strip 360 degrees

Question 9

In CR what are the image artifacts?

Answer 9

imaging plate artifacts
plate reader artifacts
printer artifacts
operator error artifacts

Question 10

In DR what are the image artifiacts?

Answer 10

incomplete transfer of the signal

amount of signal retained by the receptor