Table 1.
Raw variables for differentiating general benign from malignant SPNs
| Parameters | Benign (n = 36) | Malignant (n = 78) | P |
|---|---|---|---|
| CT40keVa | 102.23 ± 156.24 | −16.56 ± 248.21 | 0.021 |
| CT70keVa | 2.65 ± 135.46 | −69.03 ± 355.22 | 0.162 |
| ICLa | 16.96 ± 8.77 | 14.33 ± 6.41 | 0.057 |
| ICAa | 53.89 ± 30.77 | 46.89 ± 29.33 | 0.228 |
| NICa | 0.45 ± 0.36 | 0.40 ± 0.25 | 0.923 |
| λHUa | 99.57 ± 48.50 | 78.97 ± 34.56 | 0.015 |
| CT40keVv | 102.07 ± 152.64 | −15.09 ± 239.58 | 0.009 |
| CT70kevv | −0.96 ± 133.79 | −96.27 ± 229.42 | 0.163 |
| ICLv | 18.22 ± 8.65 | 13.58 ± 4.37 | 0.002 |
| ICAv | 25.11 ± 5.38 | 25.84 ± 5.74 | 0.472 |
| NICv | 0.72 ± 0.36 | 0.64 ± 0.40 | 0.120 |
| λHUv | 103.03 ± 48.84 | 81.18 ± 32.20 | 0.006 |
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; HU, Hounsfield unit; IC, iodine concentration; NIC, normalized IC; SPNs, solitary pulmonary nodules.