We propose using a coordinate network decoder for the task of super-resolution in MRI. The continuous signal representation of coordinate networks enables this approach to be scale-agnostic, i.e. one can train over a continuous range of scales and subsequently query at arbitrary resolutions. Due to the difficulty of performing super-resolution on inherently noisy data, we analyze network behavior under multiple denoising strategies. Lastly we compare this method to a standard convolutional decoder using both quantitative metrics and a radiologist study implemented in Voxel, our newly developed tool for web-based evaluation of medical images.
@article{arxiv.2210.08676,
title = {Scale-Agnostic Super-Resolution in MRI using Feature-Based Coordinate Networks},
author = {Dave Van Veen and Rogier van der Sluijs and Batu Ozturkler and Arjun Desai and Christian Bluethgen and Robert D. Boutin and Marc H. Willis and Gordon Wetzstein and David Lindell and Shreyas Vasanawala and John Pauly and Akshay S. Chaudhari},
journal= {arXiv preprint arXiv:2210.08676},
year = {2022}
}