Table 3.

International comparison of DRLs for pediatric CT

	Head			Chest			Abdomen
	< 1 year	1–5 year	6–10 year	< 1 year	1–5 year	6–10 year	< 1 year	1–5 year	6–10 year
CTDIvol,16 (mGy)
Japan (2015) [4]	38	47	60	11	14	15	11	16	17
IAEA (2012) [7]	29	37.7	46.1	14.0	16.4*	20.0*	21.4*	26.0*	24.0*
Germany (2006) [8]	33	40	50	3.5	5.5	8.5	5	8	13
Japan (2020) [5]	30	40	55	6	8	13	10	12	15
DLP16 (mGy cm)
Japan (2015) [4]	500	660	850	210	300	410	220	400	530
Germany (2006) [8]	390	520	710	55	110	210	145	255	475
Thailand (2012) [9]	400	570	610	80	140	305	220	275	560
Japan (2020) [5]	480	660	850	140	190	350	220	380	530

^*The CTD_Ivol,32 data in the literature is doubled to obtain CTDI_vol,16