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Table 5 Measured HU values in monoenergetic images with Siemens Somatom Drive

From: Quantitative benchmarking of iodine imaging for two CT spectral imaging technologies: a phantom study

Phantom size Energy level (kV) Water Saline 10 mg/mL 20 mg/mL 30 mg/mL 50 mg/mL 100 mg/mL
Small 70 -0.1 11.4 286.7 566.3 835.9 1362.2 2263.3
80 0.6 10.1 212 419.9 621.4 1017.3 1795.6
90 1.0 9.3 162.4 322.6 478.9 788.2 1483.9
100 1.3 8.7 128.1 255.3 380.5 629.4 1268.4
110 1.5 8.3 103.7 207.5 310.4 516.7 1115.0
120 1.7 8.0 85.9 172.6 259.3 434.4 1003.0
130 1.8 7.7 72.6 146.5 221.1 373 919.5
140 1.9 7.6 62.5 126.7 192 326.2 856.0
Medium 70 -2.5 8.0 280.6 559.2 832.1 1357.2 2324.5
80 -1.9 7.7 207.5 414.9 618.6 1013 1812.7
90 -1.6 7.6 158.8 318.7 476.3 783.5 1471.5
100 -1.3 7.5 125.0 252.4 378.0 624.9 1236.1
110 -1.1 7.4 101.1 205.0 308.0 512.3 1068.2
120 -1.0 7.3 83.6 170.5 257.0 430.0 945.8
130 -0.9 7.3 70.6 144.7 218.9 368.7 854.5
140 -0.8 7.3 60.7 125.1 189.9 321.9 785.0
Large 70 0.6 8.8 287.8 565.2 841.7 1367.6 2350.1
80 0.9 8.2 213.4 418.8 625.0 1020.2 1823.5
90 1.2 7.6 163.8 321.1 480.5 788.5 1472.5
100 1.3 7.2 129.4 253.5 380.2 628.6 1230.3
110 1.4 6.9 105.2 205.4 308.9 514.8 1057.8
120 1.5 6.6 87.5 170.4 256.8 431.8 931.3
130 1.6 6.5 74.3 144.3 218.0 369.8 836.8
140 1.6 6.3 64.2 124.4 188.5 322.6 765.1
  1. HU Hounsfield units