Table A2.

Estimation of the source blur h₂ for Hologic Selenia Dimensions system. We used the maximum current of the x-ray tube in the vendor’s user guide² as the current for each thickness of the breast, ignoring the possible dependence of the current on kV setting. The Hologic system bins 2 × 2 pixels during the image reconstruction. Therefore, the pixel size is 0.14 mm for this system.

Breast Thickness (mm)	Kilovoltage (kV)	Total Current-Time Product (mAs)	Current (mA)	Total Exposure Time (s)	Exposure Time per PV (s)	Source Motion of one PV (mm)	Source Blur h2 (mm)
20	26	32	200	0.160	0.011	0.5	0.8
40	29	43	200	0.215	0.014	0.7	1.0
60	33	60	200	0.300	0.020	1.0	1.3
80	38	81	200	0.405	0.027	1.3	1.6