Deep Learning Algorithm-Based Ultrasound Image Information in Diagnosis and Treatment of Pernicious Placenta Previa

Table 4

Placenta accreta history score scale.

History of cesarean section	Prenatal bleeding symptoms	History of abortion or vaginal delivery
Once, score 1	No, score 0	Once, score 1
≥2 times, score 2	Yes, score 2	≥2 times, score 2