Chapter 9
Page no. 1698
JC-CAL-A-043.fm
GE Healthcare
Senographe DS
Revision 1
Service Information and Procedures Class A 2385072-16-8EN
Job Card CAL A043 - Detector Gain Calibration
7. If the check is successful you are requested to make four exposures for gain calibration. The system
selects the calibration technique and parameters.
8. The system uses information from the four exposures to update the gain map; a message appears to
indicate successful completion.
9. Repeat the procedure for each of the listed techniques.
The following table lists the techniques that must be calibrated, with specified parameters and configura-
tions.
7-3
If the Magnification Option Present
7-3-1
Calibrations
If the Magnification option is present, three more Mag mode techniques must be calibrated with specified
parameters and configurations, as follows.
Technique for calibration
IQ check technique;
Calibration technique
Configuration
Mo/Mo/LF/grid
Mo/Mo 26 kV 64 mAs, LF;
Mo/Mo 26 kV 320 mAs, LF
Bucky installed, no paddle.
Phantom on Bucky.
Mo/Rh/LF/grid
Mo/Rh 28 kV 36 mAs, LF;
Mo/Rh 28 kV 180 mAs, LF
Bucky installed, no paddle.
Phantom on Bucky.
Rh/Rh/LF/grid
Rh/Rh 30 kV 22 mAs, LF;
Rh/Rh 30 kV 100 mAs, LF
Bucky installed, no paddle.
Phantom on Bucky.
Mo/Mo/LF/nogrid
Mo/Mo 26 kV 32 mAs, LF;
Mo/Mo 26 kV 160 mAs, LF
No Bucky, no paddle.
Phantom on image receptor.
Mo/Rh/LF/nogrid
Mo/Rh 28 kV 18 mAs, LF;
Mo/Rh 28 kV 90 mAs, LF
No Bucky, no paddle.
Phantom on image receptor.
Rh/Rh/LF/nogrid
Rh/Rh 30 kV 11 mAs, LF;
Rh/Rh 30 kV 56 mAs, LF
No Bucky, no paddle.
Phantom on image receptor.
Technique for calibration
IQ check technique;
Calibration technique
Configuration
Mo/Mo/SF/nogrid/mag
Mo/Mo 26 kV 45 mAs, SF;
Mo/Mo 26 kV 160 mAs, SF
No Bucky, no paddle.
Phantom on mag. stand (1.8).
Mo/Rh/SF/nogrid/mag
Mo/Rh 28 kV 24 mAs, SF;
Mo/Rh 28 kV 120 mAs, SF
No Bucky, no paddle.
Phantom on mag. stand (1.8).
Rh/Rh/SF/nogrid/mag
Rh/Rh 30 kV 20 mAs, SF;
Rh/Rh 30 kV 100 mAs, SF
No Bucky, no paddle.
Phantom on mag. stand (1.8).
