Feature extraction, selection, and screen of the optimal sequence of VMI
radiomics-based
Radiomics features were extracted from ROIs with the reference of the image biomarker standardization initiative (IBSI) [A flow chart displaying the process of building radiomics-based model in this study. AP, arterial phase; VP, venous phase; SDCT, dual-layer Spectral Detector CT; SPSN, solitary pulmonary solid nodule; ROI, region of interest