Figure 3.

Use of the constructed radiomics nomogram to estimate disease-free survival (DFS) for gastric cancer (GC), along with the calibration and prediction error curves (A). Radiomics nomogram to estimate DFS. Calibration curves for the radiomics nomogram of DFS in the training cohort (B) and validation cohort (C) show the calibration of each model in terms of the agreement between the estimated and the observed 1-, 3-, and 5-year survival outcomes. The nomogram-estimated DFS is plotted on the x-axis, and the observed DFS is plotted on the y-axis. The diagonal dotted line is a perfect estimation by an ideal model, in which the estimated outcome perfectly corresponds to the actual DFS. The solid line is the performance of the nomogram: a closer alignment with the diagonal dotted line represents a better estimation (D, E). Prediction error curves for each model. Lower prediction errors indicate higher model accuracy.