User Manual Part 2

88
2852 A EN 20070205
DRYSTAR AXYS
Establishing the reference values
and verifying image quality for
general radiography applications
(DT 2 B and DT 2 C)
After installation of a new Drystar AXYS and before initial use you must estab-
lish 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 deter-
mined again after major service, repair or software update.
The following Quality Control aim values must be determined:
Q The daily operating density levels. Refer to “Establishing the daily operating ref-
erence density levels for general radiography applications (DT 2 B and DT 2 C)”
on page 91.
Q Drystar AXYS image geometry. Refer to “Establishing the image geometry refer-
ence values for general radiography applications (DT 2 B and DT 2 C)” on
page 95.
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. Refer to “Verifying Acceptable Spatial Resolu-
tion, Artifact Levels and Low Contrast Visibility for general radiography applica-
tions (DT 2 B and DT 2 C)” on page 96.
The Quality Control aim values, the Spatial Resolution and Artifact Levels and
the Image Geometry values are all recorded on the Quality Control charts. Refer
to “Charts for general radiography QC” on page 150.