Association Between Histopathologic Characteristics and Imaging Features Derived from 18F-FDG PET Images
| Histologic grade | Lymph-vascular space invasion | Metastatic lymph nodes | ||||||||
| Radiomic feature | 1–2 | 3 | P | Depth of invasion (mm) | No | Yes | P | No | Yes | P |
| SUVmax | 12.1 ± 4.2 | 13.9 ± 3.0 | 0.3 | R2 = 0.07 | 11.2 ± 3.2 | 13.7 ± 4.48 | 0.05 | 11.5 ± 4.2 | 13.0 ± 3.9 | 0.2 |
| Local entropy | 3.9 ± 0.11 | 3.9 ± 0.09 | 1 | R2 = 0.10 | 3.9 ± 0.12 | 3.9 ± 0.10 | 0.6 | 3.9 ± 0.10 | 3.9 ± 0.11 | 0.4 |
| Maximum 3D diameter | 48.5 ± 19.4 | 44.6 ± 16.1 | 0.8 | R2 = 0.08 | 47.6 ± 22.0 | 48.3 ± 15.0 | 0.7 | 46.9 ± 20.2 | 48.6 ± 18.0 | 0.9 |
| Moran’s I | 0.062 ± 0.018 | 0.057 ± 0.021 | 0.8 | R2 = 0.013 | 0.059 ± 0.018 | 0.064 ± 0.020 | 0.6 | 0.062 ± 0.017 | 0.061 ± 0.020 | 0.9 |
R2 indicates the coefficient of determination.