Table 2.

Patient characteristics and radiation dose. Mean ± SD is given for age, DLP, CTDI and ED. A median for most results is given between rounded brackets and age range between square brackets. Statistical analysis was performed using independent T test and Chi-square test (gender). P-values are listed. If results are significant, they are indicated by *

	Protocol A	Protocol B	P- value
Age (months)	7.3 ± 4.8 [2–24]	8.1 ± 7.3 [0-35]	0.626
Gender (male/female)	15/9 (62.5 %/37.5 %)	17/7 (71 %/29 %)	0.759
DFOV (mm)	175 ± 23 (171)	177 ± 24 (179)	0.779
CTDIvol (mGy)	32.18 ± 0.04 (32.19)	0.94 ± 0.01 (0.93)	<0.001*
DLP (mGy*cm)	487.48 ± 33.14 (486.70)	15.04 ± 2.25 (14.28)	<0.001*
Effective dose (mSv)	3.07 ± 0.16 (3.13)	0.08 ± 0.00 (0.08)	<0.001*