Specificity

Sensitivity

Cut-off point

Variable

87.6%

80.95%

≤1.9

Average uterine artery PI

90.4%

85.7%

≤0.76

Average uterine artery RI

64.7%

67.6%

≤1.83

Subendometrial PI

91.4%

80.9%

≤0.67

Subendometrial RI

96%

87.62%

≥4.1

Subendometrial VI

95.24%

89.5%

≥34

Subendometrial FI

87.6%

85.7%

≥0.98

Subendometrial VFI