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Diagnostic Accuracy of 18F-FDG PET/CT in Detecting Postoperative Recurrence after Curative Gastrectomy
Sensitivity = 42.9% (9 / 21).
Specificity = 43 / 72 = 59.7%.
Positive predictive value = (9 + 3) / 41 = 29.3%.
Negative predictive value = 43 / 55 = 78.2%.
Accuracy = [(9 + 3) + 43] / 96 = 57.3%.
18F-FDG PET, 18f-fluorodeoxyglucose positron emission.
