Table 5. The Mean Contrast Values of Different CT Scanners and CT Parameters.

Variables	4N-TIB Nanosuspension (HU)	Iohexol (HU)	Iopromide (HU)	P-Values
Overall	1800.36 ± 810.13	1276.32 ± 732.14	1098.92 ± 611.36	< 0.001 for all
Somatom ®	1741.47 ± 965.66	1282.73 ± 700.08	1046.87 ± 455.36	< 0.001 for all
Aqulion ONE	1846.98 ± 672.02	1271.24 ± 752.68	1140.12 ± 726.84	< 0.001 for all
70 kVp a	2185.45 ± 952.2	1484.22 ± 666.54	1222.24 ± 654.2	0.036; 0.002
80 kVp	2164.72 ± 1065.8	1636.62 ± 1195.4	1441.34 ± 1141.68	0.047; 0.005
100 kVp	1832.36 ± 651.2	1173.81 ± 382.42	1024.82 ± 171.54	< 0.001 for all
120 kVp	1693.85 ± 734.58	1141.64 ± 574.42	971.64 ± 398.64	< 0.001 for all
135 kVp a	1602.02 ± 424.85	1036.24 ± 358.6	953.08 ± 256.8	< 0.001 for all
140 kVp b	1403.15 ± 863.2	1185.12 ± 896.58	1021.48 ± 826.71	0.059; 0.053
5 mAs	1667.87 ± 252.21	1084.1 ± 261.5	1005.24 ± 231.21	< 0.001 for all
10 mAs	1733.37 ± 406.02	1146.63 ± 384.21	1032.69 ± 260.04	< 0.001 for all
20 mAs	1752.87 ± 765.2	1150.86 ± 510.8	1000.24 ± 381.54	< 0.001 for all
50 mAs	1896.56 ± 1084.54	1432.4 ± 1126.54	1313.3 ± 1096.98	0.042; 0.011
100 mAs	1898.33 ± 805.52	1304.62 ± 642.2	1102.26 ± 443.82	0.001; < 0.001
200 mAs	1903.21 ± 632.54	1302.52 ± 621.5	1040.16 ± 288.51	0.001; < 0.001

^a These parameters were only found in Aqulion.

^b This parameter was only found in Somatom.