Table 3.
Parameters used in each differential model.
| Method | Parameters | |
|---|---|---|
| SUV metrics | SUVmax | |
|
| ||
| CT predicted variable | HISTO_kurtosis | SHAPE_volume (mL) |
| GLCM_homogeneity | GLRLM_RLNU | |
| NGLDM_busyness | GLZLM_LZHGE | |
|
| ||
| PET predicted variable | HISTO_entropy_log10 | SHAPE_volume(# vx) |
| GLCM_entropy_log10 | NGLDM_contrast | |
| GLRLM_HGRE | GLZLM_HGZE | |
|
| ||
| Combination of PET and CT texture parameters | HISTO_kurtosis | SHAPE_volume (mL) |
| GLCM_homogeneity | GLRLM_RLNU | |
| NGLDM_busyness | GLZLM_LZHGE | |
| HISTO_entropy_log10 | SHAPE_volume(# vx) | |
| GLCM_entropy_log10 | NGLDM_contrast | |
| GLRLM_HGRE | GLZLM_HGZE | |
Abbreviations: HISTO, histogram; GLCM, gray-level co-occurrence matrix; GLRLM, gray-level run-length matrix; HGRE, high gray-level run emphasis; GLZLM, gray-level zone-length matrix; HGZE, high gray-level zone emphasis; RLNU, run-length nonuniformity; LZHGE, long-zone high gray-level emphasis.