Fig 1.

Workflow of the model construction. (a) CT images from arterial and venous phases. (b) Features including shape, intensity, and texture, extracted from the two phases. (c) Arterial and venous phase models and combined models were built. (d) We constructed the radiomic model by ANN with 5 fully connected layers. The feature selection method and different classifiers were used for modeling and comparison. mRMR, minimum redundancy maximum relevance; SVM, support vector machine; DT, decision tree; RF, random forest; ANN, artificial neural network.