Quality assurance

Published on 12/06/2015 by admin

Filed under Radiology

Last modified 22/04/2025

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11 Quality assurance

Definition of quality assurance

  A method of testing digital imaging systems to ensure consistency of results within the computer network. (See also Appendix F: Quality Assurance and Tests.)
Equipment Required

Test for low contrast sensitivity and resolution

Equipment Required
Equipment Tested
Testing Frequency Weekly
Testing Method
Results
Evaluation

Phosphor screen check

Equipment Required
Equipment Tested 5 random cassettes of different sizes and resolution
Testing Frequency Weekly
Testing Method
Results
Evaluation

Laser beam function in the processor

Equipment Required
Equipment Tested Processor laser beam:

Testing Frequency
Testing Method
Results
Evaluation

Receptor reproducibility, uniform density, artefact analysis

Equipment Required 2 metal objects to represent artefacts (e.g. paper clips)
Equipment Tested
Testing Frequency
Testing Method Metal artefacts are placed on two adjacent corners of the cassette

Results
Evaluation

Screen cleaning

Equipment Required Proprietary screen cleaner
Equipment Tested All cassettes
Frequency Every 2 weeks
Method
Note
Most screen cleaners contain an antistatic element as static will attract dirt and dust

Source

  Danson D 2002 Quality assurance for computed radiography. Synergy, April