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Figure 4 Receiver-operating characteristics (ROC) graph showing the percentage of correct prediction of events (sensitivity) and the percentage of correct prediction of no events (specificity) during the follow-up period, as function of the difference in atherosclerotic plaque temperature from background temperature. According to this curve, we can detect a point on it by the increase in sensitivity, with satisfactory specificity, and then estimate the threshold value. The closer the ROC curve is to the upper left-hand corner of the graph, the more accurate it is, because the true positive rate is 1 and the false-positive rate is 0. The area under the ROC curve was 77%.
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