Table 5 Measured mean HU value and standard deviation of GGNs (Mean ± SD)
Tube voltage | Tube current | 8 mm | 10 mm | 12 mm | 10 mm | 12 mm |
|---|---|---|---|---|---|---|
-630HU | -630HU | -630HU | -800HU | -800HU | ||
80 kVp | -644.38 ± 29.60 | -634.00 ± 20.83 | -641.01 ± 25.95 | -818.10 ± 19.64 | -831.30 ± 33.15 | |
100 kVp | 100 mA | -641.31 ± 67.80 | -630.29 ± 52.62 | -638.17 ± 55.99 | -816.07 ± 51.75 | -831.74 ± 66.56 |
120 kVp | -640.15 ± 71.79 | -637.72 ± 38.27 | -643.33 ± 51.21 | -820.28 ± 62.46 | -828.62 ± 48.51 | |
80 kVp | -612.93 ± 109.15 | -629.60 ± 73.83 | -634.90 ± 68.67 | -798.15 ± 94.14 | -834.06 ± 58.01 | |
100 kVp | 140 mA | -641.16 ± 54.04 | -629.81 ± 53.56 | -637.79 ± 50.37 | -814.13 ± 62.24 | -830.32 ± 49.31 |
120 kVp | -635.89 ± 75.87 | -637.68 ± 45.04 | -641.29 ± 39.36 | -818.90 ± 45.88 | -828.78 ± 37.22 | |
80 kVp | -632.58 ± 41.85 | -632.61 ± 54.81 | -634.01 ± 60.96 | -810.17 ± 83.81 | -834.35 ± 52.13 | |
100 kVp | 200 mA | -640.15 ± 71.9 | -634.78 ± 43.54 | -638.14 ± 42.54 | -817.02 ± 41.94 | -830.28 ± 39.19 |
120 kVp | -633.01 ± 42.13 | -637.44 ± 35.33 | -639.29 ± 34.98 | -818.53 ± 45.11 | -828.39 ± 30.34 |