Table 4 Measured HU values in monoenergetic images with General Electric Revolution CT
Phantom size | Energy level (kV) | Water | Saline | 10 mg/mL | 20 mg/mL | 30 mg/mL | 50 mg/mL | 100 mg/mL |
|---|---|---|---|---|---|---|---|---|
Small | 70 | -1.6 | 6.8 | 261.1 | 520.6 | 777.9 | 1292.6 | 2556.5 |
80 | 0.1 | 8.5 | 189.3 | 375.8 | 562.2 | 937.4 | 1850.8 | |
90 | 1.1 | 9.4 | 142.0 | 281.2 | 420.9 | 702.2 | 1388.6 | |
100 | 1.7 | 10.1 | 109.1 | 215.7 | 322.4 | 538.0 | 1065.1 | |
110 | 2.3 | 10.4 | 85.7 | 169.5 | 254.2 | 422.6 | 834.4 | |
120 | 2.7 | 10.7 | 69.5 | 137.1 | 205.4 | 341.7 | 673.9 | |
130 | 2.9 | 11.2 | 56.6 | 111.6 | 166.2 | 278.9 | 551.9 | |
140 | 3.0 | 11.3 | 49.0 | 92.2 | 138.4 | 229.2 | 457.8 | |
Medium | 70 | -2.6 | 3.3 | 258.0 | 520.7 | 775.2 | 1300.5 | 2565.4 |
80 | 1.7 | 7.7 | 183.4 | 370.6 | 555.9 | 930.6 | 1843.2 | |
90 | 5.3 | 10.6 | 134.8 | 280.3 | 411.7 | 689.4 | 1370.0 | |
100 | 8.0 | 12.3 | 101.6 | 203.3 | 310.6 | 522.1 | 1038.4 | |
110 | 9.6 | 14.2 | 77.0 | 154.4 | 240.5 | 401.6 | 802.4 | |
120 | 10.9 | 16.5 | 60.7 | 132.5 | 189.5 | 316.6 | 638.3 | |
130 | 12.5 | 15.5 | 47.8 | 95.9 | 151.8 | 254.4 | 511.6 | |
140 | 13.2 | 17.4 | 37.6 | 87.7 | 121.2 | 203.4 | 413.4 | |
Large | 70 | -7.6 | 1.8 | 266.8 | 524.4 | 785.4 | 1305.1 | 2556.4 |
80 | -2.1 | 7.1 | 190.4 | 375.3 | 559.9 | 932.6 | 1836.1 | |
90 | 2.2 | 11.2 | 141.0 | 276.3 | 410.7 | 685.0 | 1360.5 | |
100 | 6.6 | 12.7 | 105.2 | 206.8 | 303.3 | 513.6 | 1029.1 | |
110 | 8.6 | 13.4 | 80.4 | 158.1 | 233.0 | 392.8 | 794.6 | |
120 | 9.6 | 14.8 | 63.2 | 123.1 | 181.8 | 305.7 | 630.9 | |
130 | 11.0 | 15.3 | 49.5 | 96.8 | 141.7 | 242.6 | 504.0 | |
140 | 12.2 | 16.1 | 40.4 | 76.3 | 110.8 | 192.0 | 401.3 |