Job Card Cal A045 - Conversion Factor Measurement - GE Senographe DS Manual

GE Healthcare
Revision 1

Job Card CAL A045 - Conversion Factor Measurement

1 SUPPLIES
None
2 TOOLS
• Radcal 2026 Dosimeter
• 6M ionization chamber (6cc)
• Dosimeter support with Radiation Protection Plate
• IQST Standard Phantom
3 REQUIRED EFFORT
Personnel: 1 Field Engineer
Time: 15 minutes
4 SAFETY PRECAUTIONS
WARNING
This procedure requires the use of X–rays; take all due precautions.
5 PREREQUISITES
None
6 CONVERSION FACTOR MEASUREMENT
6-1 Description
The Conversion Factor is required for AOP (Automatic Optimization of Parameters) calculations. It is
determined by using a dosimeter to measure the X–ray dose while acquiring an image. This value is
compared with the brightness of the corrected image to give a Conversion Factor, used by the system to
convert brightness to dose for all AOP–related calculations. The brightness and dose values are also
sent to the AWS for the image quality tests.
JC-CAL-A-045.fm
Service Information and Procedures Class A 2385072-16-8EN
calibrated at mammographic X ray beam energies
Page no. 1701
Job Card CAL A045 - Conversion Factor Measurement
Senographe DS
Chapter 9
Chapter 9