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Table 3 Diagnostic performances of three-dimensional power Doppler indices at different cut-off values in detecting ovarian malignancy

From: Reliability of preoperative evaluation of postmenopausal ovarian tumors

3DPD indices

Cut-off value

Sensitivity

%

95% CI

Specificity

%

95% CI

PPV %

95% CI

NPV %

95% CI

Accuracy

%

VI (%) → Area under the ROC curve = 0.86

1.00

67.7

48.6–83.3

90.9

81.3–96.6

77.8

57.7–91.4

85.7

75.3–92.9

83.5

FI → Area under the ROC curve = 0.72

30

83.9

66.3–94.6

51.5

38.9–64.0

44.8

31.7–58.5

87.2

72.6–95.7

61.9

VFI → Area under the ROC curve = 0.87

0.31

71.0

52.0–85.8

89.4

79.4–95.6

75.9

56.5–89.7

86.8

76.4–93.8

83.5

  1. 3DPD Three-dimensional power Doppler; CI Confidential interval; PPV Positive predictive value; NPV Negative predictive value; ROC Receiver operating characteristics; VI Vascularization index; FI Flow index; VFI Vascularization flow index