. 2024 Jul 22;19(7):e0306857. doi: 10.1371/journal.pone.0306857

Table 1. The 1-, 5-, and 10-year-old APs were scanned by 21 combinations of tube voltages/currents to obtain CTDI_vol, DLP, EDs, SDs, and CNRs.

Tube voltage	Tube current	CTDI_vol	1-year-old				5-years-old				10-years-old
Tube voltage	Tube current	CTDI_vol	DLP	EDs	SDs	CNRs	DLP	EDs	SDs	CNRs	DLP	EDs	SDs	CNRs
(kVp)	(mA)	(mGy)	(mGy-cm)	(mSv)	(HU)		(mGy-cm)	(mSv)	(HU)		(mGy-cm)	(mSv)	(HU)
80	10	0.53	7.70	0.04	40.08	0.77	8.09	0.03	61.92	0.27	8.62	0.02	73.47	0.06
	40	2.11	30.80	0.15	18.54	1.02	32.38	0.11	23.25	0.79	34.49	0.08	24.41	0.86
	80	4.22	61.59	0.31	12.81	1.20	64.76	0.23	16.78	0.97	68.98	0.17	15.72	1.07
	120	6.33	92.39	0.46	10.67	1.24	97.14	0.34	13.09	1.02	103.47	0.25	14.24	1.06
	150	7.91	115.49	0.58	9.37	1.30	121.42	0.42	12.71	1.03	129.33	0.31	12.26	1.11
	200	10.55	153.98	0.77	8.22	1.31	161.89	0.57	10.75	1.08	172.44	0.41	10.59	1.17
	250	13.19	192.48	0.96	7.65	1.31	202.37	0.71	9.50	1.08	215.56	0.52	9.49	1.16
100	10	1.05	15.40	0.08	26.43	1.42	16.19	0.06	31.92	1.11	17.24	0.05	33.93	1.10
	40	4.22	61.59	0.34	12.49	1.72	64.76	0.26	15.63	1.46	68.98	0.19	16.90	1.53
	80	8.44	123.19	0.68	8.80	1.74	129.52	0.52	11.79	1.50	137.96	0.37	11.04	1.65
	120	12.66	184.78	1.02	7.16	1.83	194.27	0.78	9.43	1.53	206.93	0.56	9.01	1.73
	150	15.82	230.97	1.27	6.93	1.84	242.84	0.97	8.02	1.61	258.67	0.70	7.35	1.76
	200	21.10	307.96	1.69	5.82	1.87	323.79	1.30	7.21	1.63	344.89	0.93	7.54	1.77
	250	26.37	384.95	2.12	5.45	1.87	404.74	1.62	6.05	1.64	431.11	1.16	6.33	1.79
120	10	1.70	24.84	0.15	19.04	1.69	26.11	0.12	27.13	1.37	27.81	0.09	27.51	1.43
	40	6.81	99.34	0.61	10.76	1.95	104.45	0.48	12.77	1.69	111.25	0.34	12.30	1.90
	80	13.61	198.69	1.21	7.49	2.01	208.90	0.96	9.59	1.71	222.51	0.69	9.06	1.98
	120	20.42	298.03	1.82	6.11	2.05	313.34	1.44	7.69	1.82	333.76	1.03	8.06	2.01
	150	25.52	372.54	2.27	5.63	2.07	391.68	1.80	6.86	1.85	417.20	1.29	6.09	2.09
	200	34.03	496.72	3.03	4.76	2.08	522.24	2.40	5.89	1.86	556.27	1.72	5.62	2.09
	250	42.54	620.89	3.79	4.36	2.08	652.80	3.00	5.52	1.86	695.34	2.16	5.26	2.09

AP = anthropomorphic phantoms; CTDI_vol = volume computed tomography dose index; DLP = dose length product; ED = effective dose

SD = standard deviation; CNR = contrast-to-noise ratio.

Table 1. The 1-, 5-, and 10-year-old APs were scanned by 21 combinations of tube voltages/currents to obtain CTDIvol, DLP, EDs, SDs, and CNRs.