Research Article
Texture Analysis in the Assessment of Rectal Cancer: Comparison of T2WI and Diffusion-Weighted Imaging
Table 5
Performance of texture parameters to discriminate high-stage tumors.
| Parameters | AUC | value | 95% CI | Sensitivity (%) | Specificity (%) | Cutoff value |
| Discriminate pT3b-4 stage | | | | | | | T2-kurtosis | 0.638 | 0.0028 | 0.555, 0.716 | 53.9 | 75.7 | >1.332 | T2-energy | 0.793 | <0.0001 | 0.718, 0.856 | 60.5 | 87.1 | ≤0.528 | T2-entropy | 0.743 | <0.0001 | 0.664, 0.811 | 76.3 | 64.3 | >9.329 | A-skewness | 0.605 | 0.0248 | 0.521, 0.685 | 30.3 | 91.4 | >0.730 | A-kurtosis | 0.618 | 0.0121 | 0.534, 0.697 | 50.0 | 77.1 | >0.818 | A-entropy | 0.602 | 0.0292 | 0.518, 0.682 | 75.0 | 42.9 | >9.395 | Discriminate pN1-2 stage | | | | | | | T2-skewness | 0.640 | 0.0029 | 0.556, 0.718 | 70.9 | 54.9 | >0.729 | T2-energy | 0.713 | <0.0001 | 0.632, 0.784 | 67.3 | 73.6 | ≤0.547 | T2-entropy | 0.602 | 0.0313 | 0.518, 0.682 | 72.7 | 48.4 | >9.288 | A-skewness | 0.618 | 0.0243 | 0.535, 0.698 | 40.0 | 90.1 | >0.729 | A-kurtosis | 0.601 | 0.0489 | 0.516, 0.681 | 29.1 | 93.4 | >1.219 |
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Notes: T2-: texture parameters from the T2WI map; A-: texture parameters from the ADC map; CI: confidence interval; AUC: area under the curve.
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