Table 3. Comparison of computed tomography iodine-related parameters between small cell lung cancer and non-small cell lung cancer.
| SCLC | NSCLC | t value | P value | |
|---|---|---|---|---|
| CT40keV (HU) | ||||
| AP | 135.31±21.71 | 149.58±22.41 | 6.042 | <0.001 |
| VP | 161.44±21.99 | 170.46±19.13 | 1.955 | 0.054 |
| λHU | ||||
| AP | 1.51±0.17 | 1.79±0.23 | 5.963 | <0.001 |
| VP | 2.11±0.31 | 2.61±0.28 | 4.152 | <0.001 |
| NIC | ||||
| AP | 0.13±0.02 | 0.17±0.02 | 7.992 | <0.001 |
| VP | 0.34±0.03 | 0.39±0.04 | 5.576 | <0.001 |
| NAEF | 0.37±0.06 | 0.44±0.08 | 4.190 | <0.001 |
CI, confidence interval; SCLC, small cell lung cancer; NSCLC, non-small cell lung cancer; HU, Hounsfield unit; AP, artery phase; VP, venous phase; CT40keV, the value of 40 keV monochromatic images; λHU, the slope of spectral HU curve; NIC, the normalized iodine concentration; NAEF, the normalized arterial enhancement fraction.