Table 2.
Significant radiomic features between low and high Ki‐67 expression level groups
| (a) | ||||
|---|---|---|---|---|
| Radiomic features | Ki‐67 status | t | P | |
| Low (n = 54) | High (n = 56) | |||
| Elongation (shape) | 0.74 ± 0.13 | 0.79 ± 0.11 | 2.26 | 0.03 |
| (b) | |||
|---|---|---|---|
| Radiomic features | Ki‐67 status | P | |
| Low (n = 54) | High (n = 56) | ||
| Inverse variance (GLCM) | 40.48 | 69.98 | 0.000 |
| Minor axis (shape) | 47.93 | 62.80 | 0.014 |
| Surface volume ratio (shape) | 63.65 | 47.64 | 0.009 |
| Volume (shape) | 47.28 | 63.43 | 0.008 |
| Surface area (shape) | 47.56 | 63.16 | 0.010 |
| Least axis (shape) | 46.26 | 64.41 | 0.003 |
| Maximum 2D diameter column (shape) | 47.94 | 62.79 | 0.015 |
| Maximum 2D diameter row (shape) | 47.20 | 63.50 | 0.007 |
| Gray Level Non‐uniformity (GLCM) | 45.76 | 64.89 | 0.002 |
| Zone variance (GLSZM) | 44.87 | 65.75 | 0.001 |
| Large area emphasis (GLSZM) | 44.85 | 65.77 | 0.001 |
Mean ± standard deviation of features, independent‐sample t test for comparison.
Mean rank of features, Mann–Whitney U‐test for comparison. GLCM, Gray Level Non‐uniformity; GLSZM, Gray Level Size Zone Matrix.