TABLE 1.

Accuracy of 18F-FDG PET/CT Vs. 68Ga-FAPI PET/CT for Nodal Staging in 18 Patients

TracerMalignantBenignStatistics
18F-FDG
 PositiveTrue positive, n = 4False positive, n = 6Positive predictive value, 56%
 NegativeFalse positive, n = 2True negative, n = 6Negative predictive value, 89%
 StatisticsSensitivity, 66%Specificity, 50%Accuracy, 55%
68Ga-FAPI
 PositiveTrue positive, n = 6False positive, n = 1Positive predictive value, 86%
 NegativeFalse positive, n = 0True negative, n = 11Negative predictive value, 100%
 StatisticsSensitivity, 100%Specificity, 92%Accuracy, 94%

  • Accuracy was tabulated on per-patient basis (1 node per patient).