Table 3 Comparison of ¹⁸F-FAPI and ¹⁸F-FDG in the evaluation of small mediastinal and hilar lymph nodes

True positive (No. of lymph nodes)

10

10

/

False positive (No. of lymph nodes)

3

20

/

False negative (No. of lymph nodes)

3

3

/

True negative (No. of lymph nodes)

69

52

/

Sensitivity (%)

77 [49, 93]

77 [49, 93]

NS

Specificity (%)

96 [88, 99]

72 [61, 81]

 < .001*

Accuracy (%)

93 [85, 97]

73 [63, 81]

 < .001*

PPV (%)

77 [49, 93]

33 [19, 51]

/

NPV (%)

96 [88, 99]

95 [84, 98]

/