Figure 5.

Illustration of training and testing schemes in this study. A twofold cross validation method was used for training and testing of the overall detection performance of the CADe system. When one subset was used for training, tenfold cross validation was performed within the training subset to select the parameters of the channelized basis functions. The trained CADe system was applied to the other subset for testing and a FROC curve was obtained from each of the twofold cross validation cycle.