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