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Table 4 Diagnostic performance of BT-RADS category 3 before and after addition of DWI and FLAIR signal within resection cavity

From: The value of adding DWI and FLAIR signal changes in the resection cavity on the diagnostic performance of BT-RADS category 3 for tumor progression prediction in post-treated glioma patients: a prospective pilot study

Parameters

Before adding DWI

After adding DWI

After adding DWI and FLAIR signal

AUC

0.706

0.780

0.819

True-positive findings (n)

10

11

12

False-negative findings (n)

3

2

1

False-positive findings (n)

5

4

4

True-negative findings (n)

9

10

10

Accuracy (%)

70.4 (19/27)

77.8 (21/27)

81.4 (22/27)

Sensitivity (%)

76.9 (10/13)

84.6 (11/13)

92.3 (12/13)

Specificity (%)

64.3 (9/14)

71.4 (10/14)

71.4 (10/14)

Positive predictive value (%)

66.7(10/15)

73.3(11/15)

75 (12/16)

Negative predictive value (%)

79.5 (9/12)

83.3(10/12)

90.9 (10/11)

Positive likelihood ratio

2.15

2.96

3.23

Negative likelihood ratio

0.36

0.21

0.11