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EJNMMI Reports
Fig. 2 | European Journal of Hybrid Imaging

Fig. 2

From: Retention index of FDG-PET/CT SUVmax of the primary tumor in non-small cell lung cancer as a predictor of lymph node metastasis: a retrospective study

Fig. 2

A Receiver operating characteristic (ROC) curve for early maximum standardized uptake value (SUVmaxe) as a predictor of lymph node metastasis. The area under the ROC curve (AUC) was 0.73 with an SUVmaxe of 2.80 as the threshold; the sensitivity and specificity were 0.494 and 0.909, respectively. B ROC curve for delayed maximum standardized uptake value (SUVmaxd) as a predictor of lymph node metastasis. The AUC was 0.73, with an SUVmaxd of 3.70 as the threshold, and the sensitivity and specificity were 0.517 and 0.886, respectively. C ROC curve for the retention index (RI) as a predictor of lymph node metastasis. The AUC of the RI was 0.62 (95% CI 0.54–0.71), and the threshold of the RI was 0.276; the sensitivity and specificity were 0.609 and 0.659, respectively

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