Table 2.
Performance of each MRI technique separately and in combination
| T2W | DCE | T2W/DCE | T2W/DWI | |
|---|---|---|---|---|
| n | 38 | 35 | 35 | 38 |
| TP/correctly identified | 28 (73.7) | 28 (80) | 28 (80) | 33 (86.8) |
| FP/incorrectly identified | 2 (5.3) | 2 (5.7) | 2 (5.7) | 0 (0) |
| TN/correctly rejected | 0 (0) | 0 (0) | 0 (0) | 2 (5.3) |
| FN/incorrectly rejected | 8 (21.0) | 5 (14.3) | 5 (14.3) | 3 (7.9) |
| Unable to perform | 0 | 3 | 3 | 0 |
| PPV, TP/(TP+FP) | 93.3 | 93.3 | 93.3 | 100 |
| Sensitivity, TP/(TP+FN) | 77.8 | 84.8 | 84.8 | 91.7 |
| Accuracy, (TP+TN)/total | 73.6 | 80 | 80 | 92.1 |
| P (comparison with T2W) | - | 1.000 | 1.000 | 0.016 |
Data are presented as n (%).
T2W, T2-weighed; DCE, dynamic contrast-enhanced; DWI, diffusion-weighted imaging; n, number of patients; TP, true positive; FP, false positive; TN, true negative; FN, false negative; PPV, positive predictive value.