Figure 1

(a) Receiver operating characteristic (ROC) curve for the validation data. The area under the curve (AUC) for diagnosis by the neural network was 0.953, and ROC analysis revealed 89.7% sensitivity and 94.3% specificity. (b) ROC curve for the test data. The AUC for diagnosis by the neural network was 0.946, and ROC analysis revealed 92.5% sensitivity and 88.6% specificity.