Size-specific dose estimates: Localizer or transverse abdominal computed tomography images?

Table 3 Size specific dose estimate ratio to computed tomography dose index volume on localizer radiograph and transverse computed tomography images is tabulated on this table

	DAP		DL		DSum		DEff
	Range	Mean	Range	Mean	Range	Mean	Range	Mean
Localizer radiograph
Average	0.20, 0.46	0.06 ± 0.14	-0.17, 0.55	0.12 ± 0.18	-0.26, 0.50	0.04 ± 0.17	-0.25, 0.47	0.04 ± 0.16
Maximum	-0.32, 0.01	-0.21 ± 0.08	-0.13, 0.50	0.08 ± 0.17	-0.28, 0.27	0.01 ± 0.16	-0.30, 0.43	0.00 ± 0.16
Minimum	-0.26, 0.11	-0.11 ± 0.09	-0.17, 0.65	0.26 ± 0.23	-0.27, 0.26	0.03 ± 0.19	-0.27, 0.59	0.04 ± 0.19
Mid location	-0.30, 0.08	-0.15 ± 0.10	-0.17, 0.69	0.13 ± 0.23	-0.22, 0.56	0.16 ± 0.23	-0.20, 0.64	0.12 ± 0.17
Transverse computed tomography images
Average	-0.23, 0.59	0.13 ± 0.14	-0.13, 0.50	0.15 ± 0.16	-0.27, 0.50	0.11 ± 0.15	-0.26, 0.53	0.11 ± 0.15
Maximum	-0.25, 0.67	0.18 ± 0.19	-0.13, 0.50	0.08 ± 0.16	-0.17, 0.59	0.08 ± 0.15	-0.29, 0.53	0.10 ± 0.17
Minimum	-0.16, 0.66	0.13 ± 0.16	-0.06, 0.70	0.31 ± 0.19	-0.20, 0.61	0.11 ± 0.17	-0.14, 0.59	0.16 ± 0.15
Mid location	-0.25, 0.74	-0.10 ± 0.17	-0.17, 0.55	0.19 ± 0.20	-0.12, 0.56	0.16 ± 0.14	-0.19, 0.64	0.10 ± 0.23

D_Eff: Effective Diameter; D_Sum: Sum of anterior-posterior + Lateral diameter; D_L: Lateral diameter; D_AP: Anteroposterior diameter.