Table 3.
Texture features that had an AUC ≥ 0.850 for differentiation between primary PDAC and hepatic PDAC metastasis
| Texture feature | LoG filter (mm) | AUC | SD | CI 95% | p value |
|---|---|---|---|---|---|
| First order | |||||
| Median | 2.5 | 0.907 | 0.028 | 0.853–0.962 | < 0.00015 |
| Median | 1.5 | 0.872 | 0.033 | 0.807–0.937 | < 0.00015 |
| Mean | 2.5 | 0.880 | 0.033 | 0.815–0.945 | < 0.00015 |
| Mean | 1.5 | 0.834 | 0.038 | 0.759–0.909 | < 0.00015 |
| 10 percentile | 2.5 | 0.870 | 0.035 | 0.800–0.939 | < 0.00015 |
| Gray-level co-occurrence matrix | |||||
| Joint average | 2.5 | 0.928 | 0.022 | 0.876–0.974 | < 0.00015 |
| Joint average | 1.5 | 0.866 | 0.034 | 0.800–0.931 | < 0.00015 |
| Sum average | 2.5 | 0.927 | 0.024 | 0.879–0.974 | < 0.00015 |
| Sum average | 1.5 | 0.864 | 0.035 | 0.799–0.930 | < 0.00015 |
| Autocorrelation | 2.5 | 0.924 | 0.025 | 0.876–0.972 | < 0.00015 |
| Autocorrelation | 1.5 | 0.862 | 0.034 | 0.796–0.929 | < 0.00015 |
| Cluster shade | 1.5 | 0.862 | 0.035 | 0.794–0.930 | < 0.00015 |
| Gray-level run-length matrix | |||||
| Low gray-level run emphasis | 2.5 | 0.903 | 0.027 | 0.849–0.956 | < 0.00015 |
| High gray-level run emphasis | 2.5 | 0.885 | 0.030 | 0.826–0.944 | < 0.00015 |
| Gray-level dependence matrix | |||||
| Low gray-level emphasis | 2.5 | 0.929 | 0.024 | 0.882–0.975 | < 0.00015 |
| Low gray-level emphasis | 1.5 | 0.873 | 0.033 | 0.809–0.937 | < 0.00015 |
| High gray-level emphasis | 2.5 | 0.926 | 0.024 | 0.879–0.937 | < 0.00015 |
| High gray-level emphasis | 1.5 | 0.870 | 0.033 | 0.805–0.935 | < 0.00015 |
| Large dependence high gray-level emphasis | 2.5 | 0.911 | 0.027 | 0.857–0.965 | < 0.00015 |
LoG Laplace of Gaussian filter, AUC area under the ROC curve, SD standard deviation, CI confidence interval 95%, p value after Bonferroni–Holm correction