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Table 2 Sensitivity, specificity, PPV, and Youden’s Index for cut-off values and morphological criteria by CT and MRI

From: Accuracy of various criteria for lymph node staging in ductal adenocarcinoma of the pancreatic head by computed tomography and magnetic resonance imaging

 

Sensitivity

Specificity

PPV

Youden’s Index

CT

Size, cut-off value

  4 mm

95.3%

0%

70.7%

− 0.05

  5 mm

95.3%

0%

70.7%

− 0.05

  6 mm

90.7%

11.7%

72.2%

− 0.02

  7 mm

83.7%

17.6%

72.0%

0.01

  8 mm

67.4%

41.2%

74.4%

0.08

  9 mm

51.1%

58.8%

75.9%

0.10

  10 mm

44.2%

82.4%

86.4%

0.27

  11 mm

34.9%

88.2%

88.2%

0.23

Morphological criterion

  Lobulated

62.7%

52.9%

77.1%

0.16

  Spiculated

11.6%

88.2%

71.4%

− 0.00

  Indistinct

2.3%

94.1%

50.0%

− 0.04

  Inhomogeneous

25.6%

94.1%

91.7%

0.20

MRI

Size, cut-off value

  7 mm

75.0%

0%

60.0%

− 0.25

  8 mm

58.3%

83.3%

87.5%

0.42

  9 mm

58.3%

66.7%

77.8%

0.25

  10 mm

58.3%

83.3%

87.5%

0.42

  11 mm

25.0%

83.3%

75.0%

0.08

  12 mm

16.7%

83.3%

66.7%

0.00

  13 mm

16.7%

83.3%

66.7%

0.00

  14 mm

8.3%

83.3%

50.0%

− 0.08

  15 mm

8.3%

83.3%

50.0%

− 0.08

Morphological criterion

  Lobulated

16.7%

66.7%

50.%

− 0.17

  Spiculated

8.3%

100%

35.3%

0.08

  Indistinct

Not visible

  Inhomogeneous

Not visible