Table 4 Diagnostic performances of different features for association with placenta percreta (n = 115)
MRI features | No (%) of patients | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | AUC | p | |
|---|---|---|---|---|---|---|---|---|
Patients without placenta percreta | Patients with placenta percreta | |||||||
T2 dark bands | 72.7 | 70.3 | 71 | 72.29 | 0.715 | 0.002 | ||
No | 72 (69.90) | 3 (25) | ||||||
Yes | 31 (30.10) | 9 (75) | ||||||
Placental heterogeneity | 45.5 | 84.2 | 74.23 | 60.71 | 64.8 | 0.016 | ||
No | 86 (83.50) | 6 (50) | ||||||
Yes | 17 (16.50) | 6 (50) | ||||||
Abnormal intraplacental vascularity | 58.3 | 54.4 | 56.11 | 56.55 | 56.4 | 0.404 | ||
No | 56 (54.37) | 5 (41.67) | ||||||
Yes | 47 (45.63) | 7 (58.33) | ||||||
Placental cervical protrusion sign | 25 | 90.3 | 72.05 | 54.63 | 57.6 | 0.113 | ||
No | 93 (90.29) | 9 (75) | ||||||
Yes | 10 (9.71) | 3 (25) | ||||||
Focal exophytic mass | 72.7 | 88.1 | 85.93 | 76.34 | 80.4 | 0.000 | ||
No | 91 (88.35) | 4 (33.33) | ||||||
Yes | 12 (11.65) | 8 (66.67) | ||||||
Placental recess | 16.7 | 96.1 | 81.07 | 53.57 | 56.4 | 0.059 | ||
No | 99 (96.12) | 10 (83.33) | ||||||
Yes | 4 (3.88) | 2 (16.67) | ||||||
Placental bulge | 33.3 | 86.4 | 71 | 16.94 | 59.9 | 0.075 | ||
No | 89 (86.41) | 8 (66.67) | ||||||
Yes | 14 (13.59) | 4 (33.33) | ||||||
Abnormal vascularization of the placental bed | 45.5 | 89.1 | 90.28 | 62.05 | 67.3 | 0.006 | ||
No | 91 (88.35) | 7 (58.33) | ||||||
Yes | 12 (11.65) | 5 (41.67) | ||||||
Myometrial interruption | 54.5 | 77.2 | 70.50 | 62.92 | 65.9 | 0.039 | ||
No | 79 (76.70) | 6 (50) | ||||||
Yes | 24 (23.30) | 6 (50) | ||||||
Bladder tenting | 18.2 | 100 | 100 | 55.01 | 59.1 | 0.010 | ||
No | 103 (100) | 10 (83.33) | ||||||
Yes | 0 (0) | 2 (16.67) | ||||||
Bladder vessel sign | 8.3 | 100 | 100 | 52.6 | 54.2 | 0.104 | ||
No | 103 (100) | 11 (91.67) | ||||||
Yes | 0 (0) | 1 (8.33) | ||||||
Parametrial vessel sign | 36.4 | 100 | 100 | 61.12 | 68.2 | 0.000 | ||
No | 103 (100) | 7 (58.33) | ||||||
Yes | 0 (0) | 5 (41.67) | ||||||