Figure 4. Radiomics signature score (rad-score) calculation. (A) Radiomic features ranked by coefficients of the least absolute shrinkage and selection operator (LASSO) binary logistic regression model. The flatness was the most correlated indicator with IA rupture. (B) Radiomics signature (rad-score) was constructed from a linear combination of selected features that were weighted based on their respective LASSO coefficients.