Table 1.

Simulation parameters as a function of acceleration voltage.

Tube voltage (kV)	High-energy threshold (keV)	Breast thickness (mm)	PMMA thickness (mm)
26	18	30	28
29	19	40	36
32	20	50	43
35	21	60	51
38	22	70	57

Note: PMMA, polymethyl methacrylate.