Fig. 4

Restoration comparison across multiple sampling ratios, including unseen configurations. This figure showcases the performance of different models in reconstructing MRI images at various acceleration ratios. Results highlighted in the yellow block represent new sampling ratios (e.g., 5× and 7×) that were not encountered during pre-training, demonstrating each model’s generalization ability. The results highlight MR-IPT’s strong adaptability to previously unseen acceleration factors, effectively preserving fine anatomical structures while minimizing artifacts, compared to other baseline methods.