Establishing the reference values and verifying image quality
for general radiography applications
After installation of a new printer and before initial use you must establish
Quality Control aim values. These values will be used as the base line for
comparison when daily Quality Control is done. These values should be
determined again after major service, repair or software update.
The following Quality Control aim values must be determined:
• The daily operating density levels.
• Image geometry.
Once Quality Control aim values are established you must evaluate the Spatial
Resolution, the Artifact Levels and the Low Contrast Visibility to determine if
the image quality is acceptable.
The Quality Control aim values, the Spatial Resolution and Artifact Levels and
the Image Geometry values are all recorded on the Quality Control charts.
On these charts, the following test conditions are also recorded:
• The type and serial number of the printer.
• The type and emulsion number of the film used to determine the reference
values.
• The type of densitometer used.
• The time (day, month, year) that the values were established.
WARNING:
Before you can establish the daily operating levels, the printer
must be switched on for at least 15 minutes and it must be
calibrated as well.
Related Links
Charts for general radiography QC on page 130
Switching on the printer on page 66
Topics:
• Establishing the daily operating reference density levels for general
radiography applications
• Establishing the image geometry reference values for general
radiography applications
• Verifying Acceptable Spatial Resolution, Artifact Levels and Low
Contrast Visibility for general radiography applications
Establishing the daily operating reference density levels for general
radiography applications
This procedure enables you to establish the base line values for:
Drystar 5500, Drystar 5503 | Advanced Operation (key-operator mode) |
89
2901J EN 20191018 0826
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