Table 3.
Tabulation of textures features and their ability to dissociate the different phantom’s tubes at both field strengths separately, regardless to pixel size.
| Heterogeneous vs. Homogeneous media | Size of polystyrene | Gadolinium concentration | |||
|---|---|---|---|---|---|
| RLNU | 0.796 | Contrast | 0.801 | Coarseness | 0.577 |
| Coarseness | 0.795 | Contrast_1 | 0.795 | RLNU | 0.513 |
| minValue | 0.683 | Dissimilarity | 0.794 | minValue | 0.482 |
| GLNU 1 | 0.617 | LZHGE | 0.789 | GLNU | 0.414 |
| SZLGE | 0.552 | stdValue | 0.786 | SZLGE | 0.371 |
| SRLGE | 0.534 | Entropy | 0.783 | SRLGE | 0.354 |
| Entropy | 0.645 | Homogeneity | 0.773 | GLNU | 0.347 |
| Homogeneity | 0.622 | ZP | 0.77 | EntropyH | 0.33 |
| ZLNU | 0.491 | SRE | 0.768 | meanValue | 0.328 |
| EntropyH | 0.484 | RP | 0.762 | LGZE | 0.325 |
| LGRE | 0.481 | Energy | 0.756 | LGRE | 0.315 |
| LGZE | 0.477 | SZE | 0.756 | EnergyH | 0.308 |
| GLNU | 0.468 | LRE | 0.741 | KurtosisH | 0.302 |
| Contrast | 0.458 | GLNU | 0.738 | SkewnessH | 0.293 |
| EnergyH | 0.439 | RLNU | 0.732 | Correlation | 0.262 |
| Contrast | 0.429 | minValue | 0.727 | maxValue | 0.246 |
| Dissimilarity | 0.423 | ZLNU | 0.698 | Contrast | 0.246 |
| stdValue | 0.421 | KurtosisH | 0.677 | ZLNU | 0.237 |
| Energy | 0.418 | LZE | 0.646 | LRLGE | 0.228 |
| meanValue | 0.409 | EntropyH | 0.624 | LRHGE | 0.198 |
| KurtosisH | 0.405 | Coarseness | 0.617 | Entropy | 0.195 |
| RP | 0.378 | SRLGE | 0.583 | Energy | 0.182 |
| SRE | 0.373 | EnergyH | 0.554 | Contrast | 0.181 |
| Correlation | 0.363 | SZLGE | 0.554 | Dissimilarity | 0.18 |
| SZE | 0.346 | LGRE | 0.524 | LZLGE | 0.173 |
| LRE | 0.329 | LGZE | 0.46 | Homogeneity | 0.165 |
| ZP | 0.329 | LRHGE | 0.373 | stdValue | 0.155 |
| LRHGE | 0.316 | LZLGE | 0.321 | HGZE | 0.15 |
| LRLGE | 0.3 | meanValue | 0.275 | HGRE | 0.145 |
| SkewnessH | 0.229 | SkewnessH | 0.267 | RP | 0.141 |
| maxValue | 0.228 | LRLGE | 0.244 | SZHGE | 0.137 |
| LZHGE | 0.21 | maxValue | 0.112 | SRE | 0.132 |
| HGZE | 0.185 | HGRE | 0.101 | SRHGE | 0.132 |
| HGRE | 0.174 | GLNU | 0.092 | SZE | 0.132 |
| SRHGE | 0.14 | HGZE | 0.087 | LRE | 0.111 |
| SZHGE | 0.132 | SRHGE | 0.041 | ZP | 0.104 |
| LZLGE | 0.097 | SZHGE | 0.037 | LZE | 0.077 |
| LZE | 0.096 | Correlation | 0.017 | LZHGE | 0.01 |
Given are the names of the feature variables and the absolute Spearman’s rho correlation coefficient between imaging features and the type of phantom tube. First column: ability to dissociate homogeneous versus heterogeneous tubes. Second column: ability to dissociate heterogeneous tubes according to their polystyrene beads sizes and their spatial distribution. Third column: ability to dissociate homogeneous tubes according to their Gadolinium chelate concentration.