TABLE 1.

Patient-Specific Data Regarding Demographics and Abdominal CT Dose

					CTDIvol (mGy)		Dose Reduction From Standard (%)
Patient No.	Age (y)	Sex	BMI	IV Contrast Material Administered	Standard-Dose Series	Low-Dose Series
1	71	M	38.2	No	10.88	2.76	75
2	42	M	24.4	No	3.63	0.48	87
3	56	F	21.6	No	1.43	0.40	72
4	71	F	30.4	No	3.68	0.79	79
5	62	F	34.9	No	5.88	1.23	79
6	50	F	31.3	No	6.20	1.32	79
7	52	M	24.8	No	2.03	0.44	78
8	51	F	24.0	No	2.47	0.59	76
9	59	M	23.7	No	2.23	0.48	78
10	55	M	31.3	No	4.09	0.85	79
11	86	F	28.1	No	10.31	1.42	86
12	42	M	25.7	No	6.67	1.50	78
13	28	M	26.1	No	8.05	1.50	81
14	58	F	26.4	No	7.31	1.58	78
15	80	M	25.5	No	7.95	1.50	81
16	71	M	31.5	No	16.60	2.66	84
17	29	M	27.7	No	9.80	1.53	84
18	62	M	20.8	No	5.97	1.52	75
19	59	F	34.2	No	12.87	2.04	84
20	43	F	26.5	No	7.50	1.39	81
21	63	F	38.8	Yes	21.26	8.48	60
22	35	F	23.1	Yes	4.54	1.29	72
23	77	F	24.0	Yes	4.85	1.53	68
24	48	M	26.1	Yes	14.33	5.66	61
25	72	F	35.9	Yes	25.71	10.25	60
26	82	M	28.4	Yes	14.51	3.78	74
27	55	F	39.8	Yes	32.09	3.94	88
28	85	F	33.8	Yes	35.30	15.05	57
29	57	M	41.6	Yes	79.83	26.45	67
30	41	F	24.3	No	7.72	1.48	81
31	66	M	26.1	No	10.06	1.60	84
32	77	F	30.1	Yes	11.69	4.55	61
33	41	M	28.8	Yes	7.85	1.47	81
34	63	M	35.1	Yes	19.55	7.71	61
35	79	M	24.4	No	7.35	2.88	61
36	39	M	21.6	Yes	5.39	1.98	63
37	58	F	19.4	Yes	4.56	1.09	76
38	42	M	28.1	Yes	11.59	4.56	61
39	60	F	23.6	Yes	5.92	2.16	64
40	48	M	24.3	Yes	7.29	2.88	60
41	76	M	27.9	Yes	41.48	10.08	76
42	50	F	33.0	No	6.17	1.31	79
43	52	F	30.3	Yes	17.88	3.23	82
44	42	M	32.4	Yes	34.22	4.14	88
45	69	M	25.9	Yes	7.10	2.77	61
Mean	57.9	24 M, 21F	28.5		12.75	3.47	74

Note—BMI = body mass index, CTDI_vol = volume CT dose index.