|
| Sensitivity | Specificity | PPV | NPV | Accuracy | AUC |
| 2D-ultrasound: |
|
|
|
|
|
|
| Loss of retroplacental sonolucent zone | 86.96 | 50.62 | 60.0 | 82.0 | 67.33 | 0.688 |
| Irregular retroplacental sonulcent zone | 85.51 | 59.26 | 64.1 | 82.8 | 71.33 | 0.724 |
| Abnormal placental lacunae | 76.81 | 82.72 | 79.1 | 80.7 | 80.00 | 0.798 |
| Thinning or disruption of hyperechoic serosa-bladder interface | 75.36 | 81.48 | 77.6 | 79.5 | 78.67 | 0.784 |
| Presence of focal exophytic masses invading the urinary bladder | 28.99 | 100.00 | 100.0 | 62.3 | 67.33 | 0.645 |
| Initial diagnosis | 86.96 | 77.78 | 76.9 | 87.5 | 82.00 | 0.824 |
| Color Doppler: |
|
|
|
|
|
|
| Diffuse or focal lacunar flow pattern | 81.16 | 77.78 | 75.7 | 82.9 | 79.33 | 0.795 |
| Sonolucent vascular lakes with turbulent flow | 81.16 | 81.48 | 78.9 | 83.5 | 81.33 | 0.813 |
| Hypervascularity of the uterine-bladder interface | 84.06 | 49.38 | 58.6 | 78.4 | 65.33 | 0.667 |
| Markedly dilated vessels over the peripheral sub-placental region | 71.01 | 90.12 | 86.0 | 78.5 | 81.33 | 0.806 |
| Initial diagnosis | 84.06 | 82.72 | 80.6 | 85.9 | 83.33 | 0.834 |
| 3D-Power Doppler: |
|
|
|
|
|
|
| Intra-placental hypervascularity | 79.71 | 80.25 | 77.5 | 82.3 | 80.00 | 0.800 |
| Inseparable cotyledonal and intervillous circulations | 76.81 | 82.72 | 79.1 | 80.7 | 80.00 | 0.798 |
| Tortuous vascularity with chaotic branching | 82.61 | 92.59 | 90.5 | 86.2 | 88.00 | 0.876 |
| Initial diagnosis | 79.71 | 83.95 | 80.9 | 82.9 | 82.00 | 0.818 |