Table 4. .
The statistical indices in evaluating the stromal involvement by either DM + 2D ultrasound; CESM; 3D ultrasound and all techniques compared to the pathology
| DM + 2D ultrasound | CESM | 3D ultrasound | All techniques | |
| True-positive | 240 | 144 | 258 | 264 |
| True-negative | 30 | 36 | 36 | 30 |
| False-positive | 6 | 0 | 0 | 6 |
| False-negative | 24 | 120 | 6 | 0 |
| Sensitivity | 91% | 55% | 98% | 100% |
| Specificity | 83% | 100% | 100% | 83% |
| Positive-predictive value | 98% | 100% | 100% | 98% |
| Negative-predictive value | 56% | 23% | 86% | 100% |
| False-positive rate | 17% | 0% | 0% | 17% |
| False-negative rate | 9% | 45% | 2% | 0% |
| Accuracy | 90% | 60% | 98% | 98% |
2D, two-dimensional; 3D, three-dimensional; CESM,contrast-enhancedspectral mammography; DM,digital mammography.