| Parameter | CT visual score | Kurtosis | Skewness | Pathological stage |
| CT visual score | 1 |
|
|
|
| Kurtosis | −0.18 | 1 |
|
|
| Skewness | −0.39 (P = 0.025) | 0.94 (P < 0.0001) | 1 |
|
| Pathological stage | −0.43 (P = 0.025) | 0.10 | 0.12 | 1 |