search

zaccharieramzi / fastmri-reproducible-benchmark

Try several methods for MRI reconstruction on the fastmri dataset. Home to the XPDNet, runner-up of the 2020 fastMRI challenge.
https://fastmri.org/leaderboards
MIT License
151 stars 50 forks source link

Support for non-uniform fourier transform #64

Closed zaccharieramzi closed 4 years ago

zaccharieramzi commented 4 years ago

The k-space data can sometimes be acquired in a non-uniform way in the k-space.

To account for that we need to change the fourier operator from a classical uniform one to a non uniform one.

This is now available through tfkbnufft.

In addition to integrating it, the corresponding sampling patterns (replacing masks) should also be integrated.

Maybe to start with, single coil would be more manageable and therefore we would need a bit of a revamp in the single coil architectures and their training.

zaccharieramzi commented 4 years ago

This was done in #74 and #79 (for multi coil).