User Manual Part 2

111
2852 A EN 20070205
DRYSTAR AXYS
11 Record the respective aim (average) values as the ‘Operating levels’ on Charts
2A and 2B (‘Drystar AXYS Daily Density Control Chart’). Refer to “Charts for
mammography QC (optional)” on page 155.
The calculated ‘Operating levels’ should be as follows:
12 These charts will be used for the daily quality test. For more information, refer
to “Performing the daily QC test for mammography application (DT 2 Mammo)
(optional)” on page 116.
Operating Level
Value (Macbeth units)
(according to NEMA standards XR 23-2006)
Base + Fog 0. 22 ± 0.03
Low density 0.45 ± 0.07
Mid density 1.20 ± 0.15
High density 2.20 ± 0.15