Table 2. Comparisons of texture analysis-derived parameters between normal tonsil and tonsil cancer.
| Mean | SD | Entropy | |||||||
| SSF | Tumor (n = 64) | Normal (n = 64) | p value | Tumor (n = 64) | Normal (n = 64) | p value | Tumor (n = 64) | Normal (n = 64) | p value |
| 0 | 84.3 | 83.43 | 0.672 | 25.38 | 17.83 | <0.001* | 4.59 | 4.17 | <0.001* |
| 2 | 8.62 | 19.97 | <0.001* | 61.39 | 50.28 | <0.001* | 5.5 | 5.17 | <0.001* |
| 3 | 14.35 | 31.26 | <0.001* | 60.46 | 49.61 | <0.001* | 5.48 | 5.17 | <0.001* |
| 4 | 18.15 | 35.95 | <0.001* | 58.86 | 46.59 | <0.001* | 5.45 | 5.1 | <0.001* |
| 5 | 21.45 | 36.22 | <0.001* | 58.42 | 42.94 | <0.001* | 5.44 | 5.02 | <0.001* |
| 6 | 23.05 | 39.02 | <0.001* | 57.29 | 40.92 | <0.001* | 5.44 | 4.99 | <0.001* |
| MPP | Skewness | Kurtosis | |||||||
| SSF | Tumor (n = 64) | Normal (n = 64) | p value | Tumor (n = 64) | Normal (n = 64) | p value | Tumor (n = 64) | Normal (n = 64) | p value |
| 0 | 85.79 | 83.72 | 0.306 | -0.88 | -0.31 | <0.001* | 2.62 | 1.08 | 0.001* |
| 2 | 48.57 | 47.53 | *0.365 | -0.29 | 0.2 | <0.001* | 1.27 | 0.38 | <0.001* |
| 3 | 51.06 | 53.22 | *0.750 | -0.33 | 0.3 | <0.001* | 0.98 | -0.2 | <0.001* |
| 4 | 53 | 55.29 | *0.804 | -0.31 | -0.14 | 0.003* | 0.79 | 0.1 | <0.001* |
| 5 | 53.32 | 56.07 | *0.990 | -0.31 | -0.29 | 0.801 | 0.4 | -0.11 | <0.001* |
| 6 | 53.46 | 57.92 | *0.712 | -0.31 | -0.41 | 0.141 | 0.16 | -0.14 | 0.012* |
* Statistically significant.
SD standard deviation, MPP mean positive pixel, SSF spatial scaling factor.