Table 4.
Raw variables for differentiating general benign from malignant GGNs
| Parameters | Benign (n = 20) | Malignant (n = 41) | P | |
|---|---|---|---|---|
| CT40keVa | 67.04 ± 210.23 | −142.14 ± 259.84 | 0.004 | |
| CT70keVa | −41.58 ± 179.11 | −223.28 ± 241.60 | 0.004 | |
| ICLa | 18.02 ± 10.92 | 14.29 ± 6.54 | 0.097 | |
| ICAa | 48.26 ± 28.96 | 46.24 ± 30.62 | 0.834 | |
| NICa | 0.53 ± 0.42 | 0.42 ± 0.29 | 0.530 | |
| λHUa | 108.62 ± 59.75 | 81.14 ± 34.82 | 0.038 | |
| CT40keVv | 63.17 ± 204.09 | −136.21 ± 247.64 | 0.004 | |
| CT70keVv | −50.52 ± 173.63 | −216.19 ± 235.50 | 0.012 | |
| ICLv | 20.53 ± 10.71 | 13.55 ± 4.08 | 0.002 | |
| ICAv | 24.53 ± 5.09 | 26.96 ± 5.87 | 0.123 | |
| NICv | 0.81 ± 0.45 | 0.68 ± 0.52 | 0.075 | |
| λHUv | 113.69 ± 60.85 | 81.98 ± 33.46 | 0.009 |
CT40keVa and CT70keVa, monochromatic computed tomography number enhancement on 40 and 70 keV images in the arterial (a) phase, respectively; CT40keVv and CT70kevv, monochromatic computed tomography number enhancement on 40 and 70 keV images in the venous (v) phase, respectively; GGNs, ground‐glass nodules; HU, Hounsfield unit; IC, iodine concentration; NIC, normalized IC.