22 October 2021: Database Analysis
Comparison of Magnetic Resonance Imaging of the Lower Uterine Segment in Pregnant Women with Central Placenta Previa with and without Placenta Accreta Spectrum from a Single Center
Shunyu Hou 1G* , Ye Song 1B* , Jiahui Wu 2D , Liping Zhou 1B , Suya Kang 1F , Xi Chen 3C , Lei Zhang 4F , Yanli Lu 5C , Yongfei Yue 1ACE*DOI: 10.12659/MSM.932759
Med Sci Monit 2021; 27:e932759
Table 3 Diagnostic indexes for the association of magnetic resonance imaging (MRI) features with placenta accreta spectrum (PAS).
| MRI feature | No.(%) of patients | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | AUC | P | |
|---|---|---|---|---|---|---|---|---|
| PAS | Non-PAS | |||||||
| Placenta thickness (>50 mm) | 36.67 | 87.88 | 80.49 | 50.43 | 0.592 | 0.001 | ||
| Yes | 33 (36.67) | 8 (12.12) | ||||||
| No | 57 (63.33) | 58 (87.88) | ||||||
| Cervical lengths ( | 21.11 | 92.42 | 79.17 | 46.21 | 0.639 | 0.021 | ||
| Yes | 19 (21.11) | 5 (7.58) | ||||||
| No | 71 (78.89) | 61 (92.42) | ||||||
| Placental dark T2 bands area | 55.56 | 80.30 | 79.37 | 56.99 | 0.615 | |||
| Yes | 50 (55.56) | 13 (19.70) | ||||||
| No | 40 (44.44) | 53 (80.30) | ||||||
| Cervical marginal sinus | 23.33 | 90.91 | 77.78 | 46.51 | 0.556 | 0.020 | ||
| Yes | 21 (23.33) | 6 (9.09) | ||||||
| No | 69 (76.67) | 60 (90.91) | ||||||
| Bladder bulge | 14.44 | 95.45 | 81.25 | 45.00 | 0.542 | 0.044 | ||
| Yes | 13 (14.44) | 3 (4.55) | ||||||
| No | 77 (85.56) | 63 (95.45) | ||||||
| Myometrial thinning | 34.44 | 92.42 | 86.11 | 50.83 | 0.634 | |||
| Yes | 31 (34.44) | 5 (7.58) | ||||||
| No | 59 (65.56) | 61 (92.42) | ||||||
| Lower uterine segment bulge | 38.89 | 87.88 | 81.40 | 51.33 | 0.634 | |||
| Yes | 35 (38.89) | 8 (12.12) | ||||||
| No | 55 (61.11) | 58 (87.88) | ||||||
| Placental signals in the cervix | 22.22 | 96.97 | 90.91 | 47.76 | 0.588 | 0.001 | ||
| Yes | 20 (22.22) | 2 (3.03) | ||||||
| No | 70 (77.78) | 64 (96.97) | ||||||
| Combination of all 8 MRI features | – | – | 82.22 | 91.09 | – | – | 0.816 | |
| PAS – placenta accreta spectrum; PPV – positive predictive value; NPV – negative predictive value; AUC – area under the curve. | ||||||||