Adding a log-ratio loss between predicted and ground-truth DWI/b=0 images reduces ratio error and slightly improves PSNR in diffusion MRI super-resolution, though with weak statistical evidence.
For each voxel, the signal attenuation 饾憜饾憜/饾憜饾憜0 for each diffusion-weighted image (DWI) is calculated relative to the b=0 image
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Enhancing Diffusion-Weighted Images (DWI) for Diffusion MRI: Is it Enough without Non-Diffusion-Weighted B=0 Reference?
Adding a log-ratio loss between predicted and ground-truth DWI/b=0 images reduces ratio error and slightly improves PSNR in diffusion MRI super-resolution, though with weak statistical evidence.