Accuracy of Placenta Accreta Index in Diagnosing Placenta Accreta Spectrum

In pregnant women with previous CS and anterior low-lying or placenta previa, the following three sonographic criteria were assessed: (i) the smallest myometrial thickness in the sagittal plane; (ii) presence of placental lacunae and its grade from 0-3; (iii) bridging vessels using color Doppler. The PAI score (up to 9) was calculated for every patient as described by Rac et al.2015.