Справочник Пользователя для Agfa Gevaert N V 5364A
142
2900H EN 20071108
Advanced operation (Key-operator mode)
D
RYSTAR
5500/5503 R
EFERENCE
MANUAL
Establishing the reference values and verifying image quality for
general radiography applications (DT 2 B and DT 2 C)
general radiography applications (DT 2 B and DT 2 C)
After installation of a new Drystar 5500 and before initial use you must
establish Quality Control aim values. These values will be used as the base
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.
be determined again after major service, repair or software update.
The following Quality Control aim values must be determined:
•
•
Drystar 5500 image geometry. Refer to
page
.
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
Spatial Resolution, the Artifact Levels and the Low Contrast Visibility to
determine if the image quality is acceptable. Refer to
on page
.
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
the Image Geometry values are all recorded on the Quality Control charts.
Refer to
.
On these charts, the following test conditions are also recorded:
•
The type and serial number of the Drystar 5500.
•
The type and emulsion number of the film used to determine the reference
values.
values.
•
The type of densitometer used.
•
The time (day, month, year) that the values were established.
Before you can establish the daily operating levels, the Drystar 5500 must
be switched on for at least 15 minutes and it must be calibrated as well.
be switched on for at least 15 minutes and it must be calibrated as well.
on page
on page
.