Quantitative comparison of 4 groups of experiments. In the first row, the images are the clinical plan of the brain cancer case, used as Ground truth, and the other images are the predicted results of the model. The second row shows the absolute differences between the clinical and predicted plans in each group of experiments. The last row shows the DVHs of the clinical and predicted plans in each group of experiments, containing the results of PTVs and OARs. Abbreviations: DVH = dose-volume histogram; OAR = organs at risk; PTV = planning target volume.