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

Table 3

Ultrasonic diagnostic scoring of placenta accreta.

	Placenta position	Placental thickness	Retroplacental space	Serosa of the urinary bladder	Placental sinus	Blood flow signal at the base of the placenta
0	Normal	<3 cm	Continuity	Continuity	None	Regular blood flow
1 point	Marginal or low-lying placenta (placenta 2 cm from the cervix)	3-5 cm	Local interrupt	Local interrupt	There is placental sinus	Increased blood flow into clusters
2 points	Complete placenta previa	>5 cm	Disappear	Disappear	Fusion into pieces, with “boiling water sign”	“Cross-border vessels” appear