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Table 3 Evaluation performance of 18F-FDG PET/CT parameters based on ROC

From: Can 18F-fluorodeoxyglucose positron emission tomography predict the response to radioactive iodine therapy in metastatic differentiated thyroid carcinoma?

Parameter Cutoff Area under curve Specificity Sensitivity PPV NPV Accuracy
Maximum SUVmax 9.12 0.98 87.5% 100% 100% 95.2% 96.4%
Average SUVmax 6.94 0.96 100% 80.0% 66.7% 100% 85.7%
Sum SUVmax 9.22 0.95 100% 85.0% 72.7% 100% 89.3%
Maximum MTV 4.89 0.91 87.5% 90.0% 77.8% 94.7% 89.3%
Average MTV 2.23 0.92 100% 75% 61.5% 100% 82.1%
Sum MTV 2.99 0.92 100% 75% 61.5% 100% 82.1%
Maximum TLG 18.1 0.94 100% 80% 66.7% 100% 85.7%
Average TLG 16.13 0.94 100% 90% 80% 100% 92.9%
Sum TLG 22.38 0.95 100% 85% 72.7% 100% 89.3%
  1. PPV Positive predictive value, NPV Negative predictive value