Table 1.

The exposure settings used to acquire each image. Effective dose (E), phantom entrance surface air kerma (ESAK), phantom transmission factor (TF), detector entrance air kerma (DAK) corrected for transmission of the phantom and scatter fractions (SFs) are also shown

Tube voltage (kV)	Tube current–time product (mAs)	E (±0.1 µSv)	ESAK (±0.1 µGy)	TF	DAK (± 0.1 µGy)	SF
50	20.00	8.9	108.5	0.038	3.0	0.47
60	8.00	9.5	97.8	0.043	2.9	0.48
70	5.00	11.0	85.2	0.054	3.1	0.49
81	3.20	12.2	73.7	0.065	3.3	0.50
90	2.00	11.1	56.2	0.073	2.8	0.50
102	1.25	10.5	44.8	0.083	2.6	0.49
109	1.00	10.2	40.4	0.088	2.5	0.50
125	0.80	10.6	42.1	0.099	2.9	0.49