Fig 1.
Free-response ROC (FROC) curve.
This curve shows the standalone performance of CAD for detecting actionable nodules based on scans from groups 1 and 2. The vertical axis represent the sensitivity and the horizontal axis the average number of false positives per scan. The dashed lines show the upper and lower boundary of 95% confidence interval, bootstrapping of scans with 2000 samples. The circle represents the UNAIDED performance (sensitivity: 71.9% average FP rate 0.11 per scan) and square the AIDED performance (sensitivity: 80.3% average FP rate 0.16 per scan) for detecting actionable nodules.
Table 1.
Distribution of study subjects and nodule size by group.