Table 2 Restoration performance comparison on unseen sampling ratios (5× and 7×) for the brain dataset. UNet128-FT and ViT-L-FT follow the same pretraining-finetuning pipeline as MR-IPT to ensure a fair evaluation of generalization performance. Results demonstrate MR-IPT’s superior adaptability to novel acceleration factors, outperforming both UNet128-FT and ViT-L-FT in PSNR and SSIM.

From: Magnetic resonance image processing transformer for general accelerated image restoration