Table 3.

Results of the objective image analysis comparing the contrast-to-noise ratio of the lesions’ center and normal liver parenchyma in the biopsy image

CNR: center of lesion vs. liver	CI	VMI 40	VMI 50	VMI 60	VMI 70	VMI 80	VMI 90	VMI 100	VMI 110	VMI 120
pat #
1	0.04	1.12	0.54	0.16	0.08	0.25	0.35	0.42	0.48	0.51
2	0.02	2.72	1.63	0.79	0.34	0.01	0.18	0.35	0.43	0.49
3	2.78	3.28	3.56	3.69	3.79	3.86	3.85	3.85	3.85	3.85
4	3.39	6.00	5.11	4.55	4.19	3.94	3.79	3.71	3.62	3.55
5	3.57	11.40	8.89	6.73	5.29	4.30	3.56	3.10	2.74	2.46
6	3.06	4.46	4.05	3.88	3.71	3.56	3.51	3.44	3.41	3.41
7	0.86	1.54	0.31	0.45	0.88	1.20	1.39	1.49	1.59	1.69
8	4.41	7.32	6.17	5.38	4.95	4.71	4.47	4.36	4.17	4.19
9	0.84	2.33	1.83	1.50	1.27	1.14	1.03	0.97	0.92	0.88
10	1.55	4.96	3.54	2.54	1.91	1.49	1.22	1.05	0.91	0.81
11	0.92	0.37	0.94	1.35	1.59	1.74	1.83	1.91	1.97	2.00
12	5.91	8.93	8.10	7.46	7.09	6.80	6.72	6.49	6.48	6.37
13	2.71	2.72	2.83	2.85	2.86	2.87	2.88	2.88	2.86	2.88
14	0.28	1.78	0.98	0.43	0.10	0.12	0.27	0.37	0.44	0.49
15	0.42	2.43	1.10	0.27	0.26	0.60	0.81	0.96	1.06	1.14
16	0.72	0.78	0.80	0.81	0.81	0.81	0.79	0.80	0.80	0.80
17	0.42	2.46	1.56	0.98	0.61	0.37	0.22	0.11	0.03	0.02
18	1.42	1.02	0.11	0.86	1.32	1.61	1.79	1.93	2.03	2.10
19	0.04	0.50	0.35	0.26	0.20	0.16	0.14	0.12	0.11	0.10
20	0.16	1.91	0.89	0.26	0.13	0.39	0.53	0.66	0.73	0.78

CNR: center of lesion vs. liver	VMI 130	VMI 140	VMI 150	VMI 160	VMI 170	VMI 180	VMI 190	VMI 200	VNC	CNRmax/CNRconv
pat #
1	0.53	0.56	0.58	0.58	0.6	0.6	0.62	0.62	0.68	28
2	0.56	0.64	0.71	0.54	0.71	0.65	0.71	0.71	0.90	136
3	3.91	3.87	3.94	3.85	3.90	3.94	3.92	3.87	3.94	1.4
4	3.52	3.51	3.45	3.46	3.42	3.41	3.44	3.44	3.28	1.8
5	2.30	2.16	2.04	1.97	1.88	1.83	1.72	1.70	1.74	3.2
6	3.40	3.38	3.33	3.38	3.31	3.30	3.36	3.35	3.25	1.5
7	1.66	1.70	1.81	1.76	1.85	1.78	1.90	1.83	1.96	2.3
8	4.11	4.10	4.07	3.98	4.02	3.94	3.96	3.98	3.84	1.7
9	0.87	0.84	0.82	0.82	0.82	0.78	0.80	0.80	0.72	2.8
10	0.74	0.70	0.65	0.63	0.58	0.55	0.55	0.55	0.44	3.2
11	2.04	2.02	2.05	2.06	2.06	2.11	2.06	2.09	2.16	2.3
12	6.36	6.24	6.38	6.20	6.29	6.31	6.21	6.22	6.17	1.5
13	2.87	2.82	2.89	2.82	2.87	2.87	2.81	2.87	2.88	1.1
14	0.52	0.56	0.58	0.59	0.61	0.62	0.63	0.63	0.72	6.4
15	1.19	1.24	1.28	1.30	1.32	1.34	1.35	1.36	1.49	5.8
16	0.80	0.78	0.80	0.78	0.81	0.79	0.77	0.79	0.81	1.1
17	0.07	0.10	0.12	0.13	0.16	0.17	0.18	0.20	0.29	5.9
18	2.15	2.20	2.21	2.26	2.27	2.27	2.27	2.33	2.43	1.7
19	0.10	0.09	0.08	0.08	0.08	0.08	0.07	0.07	0.06	12.5
20	0.82	0.85	0.89	0.90	0.93	0.92	0.94	0.96	1.04	11.9

CNR for conventional images (CIs), virtual monoenergetic (VMI) images at 40–200 keV and virtual non-contrast images (VNC) are shown. Results for each patient (1–20) individually as well as the ratio between the highest CNR (CNR_max) and the CNR in the CI (CNR_conv) are presented. Highest CNR regarding the visibility of the lesions are highlighted in bold. For patient #3, #13 and #16, no value is highlighted as the CNR_max/CNR_conv was lower than 1.5