Table 1 Comparison of the CT values with and without the x-ray attenuation rubber layer
Iodine map | VME (70 keV) | VNC | 80 kVp | 135 kVp | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Without rubber | With rubber | Without rubber | With rubber | Without rubber | With rubber | Without rubber | With rubber | Without rubber | With rubber | |
Iodine (2.00 mg/mL) | 83.7 ± 1.6 | 84.4 ± 1.0 | 31.4 ± 0.4 | 42.3 ± 0.4 | -52.3 ± 1.6 | -42.1 ± 0.8 | 101.5 ± 0.3 | 99.9 ± 0.4 | 38.8 ± 0.2 | 46.3 ± 0.3 |
Iodine (5.00 mg/mL) | 185.7 ± 1.8 | 183.5 ± 0.7 | 110.2 ± 0.4 | 125.2 ± 0.3 | -75.5 ± 1.7 | -58.3 ± 0.7 | 233.7 ± 0.4 | 221.4 ± 0.5 | 113.8 ± 0.1 | 118.6 ± 0.2 |
Iodine (10.00 mg/mL) | 369.1 ± 2.1 | 354.6 ± 0.9 | 218.0 ± 0.5 | 248.5 ± 0.4 | -151.1 ± 2.0 | -106.1 ± 0.9 | 460.1 ± 0.4 | 431.1 ± 0.4 | 214.2 ± 0.5 | 222.3 ± 0.5 |
Iodine (2.00 mg/mL) + Blood | 77.1 ± 1.1 | 80.8 ± 0.6 | 82.8 ± 0.4 | 87.5 ± 0.2 | 5.8 ± 1.2 | 6.8 ± 0.7 | 145.3 ± 0.2 | 143.1 ± 0.3 | 89.9 ± 0.3 | 91.1 ± 0.3 |
Iodine (4.00 mg/mL) + Blood | 159.6 ± 2.5 | 151.7 ± 1.1 | 108.3 ± 0.5 | 135.2 ± 0.3 | -51.3 ± 2.2 | -16.5 ± 0.9 | 241.1 ± 0.4 | 229.4 ± 0.5 | 114.6 ± 0.4 | 132.0 ± 0.2 |
Blood (1.07 ρeW) | 9.7 ± 1.5 | 6.7 ± 0.7 | 31.3 ± 0.7 | 52.7 ± 0.4 | 21.6 ± 1.0 | 46.0 ± 0.7 | 87.3 ± 0.3 | 90.6 ± 0.3 | 41.6 ± 0.3 | 63.3 ± 0.4 |
Blood (1.10 ρeW) | 0.6 ± 0.2 | 0.5 ± 0.2 | 92.2 ± 0.6 | 99.0 ± 0.3 | 91.6 ± 0.6 | 98.6 ± 0.4 | 115.8 ± 0.6 | 119.3 ± 0.3 | 102.7 ± 0.3 | 110.3 ± 0.3 |
Brain (1.02 ρeW) | 15.0 ± 1.2 | 18.4 ± 1.1 | 22.1 ± 0.3 | 25.2 ± 0.2 | 7.1 ± 1.3 | 6.8 ± 1.0 | 43.5 ± 0.5 | 47.5 ± 0.4 | 30.4 ± 0.2 | 34.8 ± 0.3 |
Water (1.00 ρeW) | 12.5 ± 0.8 | 15.1 ± 0.7 | -16.0 ± 0.2 | -13.2 ± 0.3 | -28.5 ± 0.8 | -28.3 ± 0.8 | -1.8 ± 0.4 | 0.7 ± 0.4 | -8.1 ± 0.2 | -4.3 ± 0.2 |