Skip to main content

Table 4 Performances of different quantitative variables in distinguishing malignant lesions from benign ones

From: Investigating the diagnostic value of quantitative parameters based on T2-weighted and contrast-enhanced MRI with psoas muscle and outer myometrium as internal references for differentiating uterine sarcomas from leiomyomas at 3T MRI

Variable (Cut-off Point)

AUC (95% Confidence Interval)

Sensitivity (%)

Specificity (%)

NPV (%)

PPV (%)

Accuracy (%)

Signal intensity of T2

–

100

70.2

100

45.7

76.2

Central Necrosis

–

47.6

95.2

87.9

71.4

85.7

T2 Map (82.5)

0.974

(0.930–0.988)

95

91.2

98.4

76.0

92.0

T2 Scaled Ratio (0.32)

0.952

(0.914–0.983)

100

83.3

100

58.8

86.5

Tumor Myometrium Contrast Ratio on T2 (0.31)

0.930

(0.851–0.966)

100

70.7

100

44.2

76.2

Tumor Psoas Contrast Ratio on T2 (1.58)

0.902

(0.787–0.974)

95.2

82.1

98.6

57.1

84.8

Tumor Myometrium Contrast Enhanced Ratio (0.23)

0.887

(0.835–0.968)

100

74.4

100

47.5

79.2

Tumor Psoas Contrast Enhanced Ratio (1.23)

0.840

(0.742–0.900)

81

73.8

93.9

43.6

75.2

  1. The values of Area under Receiver operating Characteristics (AUC) curve, sensitivity, specificity, Negative Predictive Value (NPV), Positive Predictive Value (PPV) and accuracy are shown. The highest value in each column is shown in bold. The cut-off points corresponding to knee points of the receiver operating characteristics curves are also presented. The confidence interval for AUC was computed using bootstrap method