Pierre-Antoine Comby

Results 24 issues of Pierre-Antoine Comby

ISMRMRD is the standard for sharing k-space data acquired using an MRI machine [^1]. There exists Python bindings [^2] , as well as a toolbox for handling the data [^3],...

feature request
help wanted

Another non-cartesian trajectory that has some nice properties An example: ![image](https://github.com/mind-inria/mri-nufft/assets/77174042/3f2ea49d-6a02-403c-a633-c302ce79229a) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8616809/

feature request
good first issue
trajectories

Presented in: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9546489/ This is not equivalent to a stack of 2D-radial trajectory due to the interleaving of the blades (see figure) ![image](https://github.com/mind-inria/mri-nufft/assets/77174042/0a33e626-3e41-4e68-a1b5-d4b2413a23ca)

feature request
good first issue
trajectories

Following the discussion of https://github.com/getkeops/keops/issues/328, adding a proper NDFT nufft (with GPU support! ) should be doable now.

nufft-backend

Hi, while looking for other stuff, we found an another NUFFT backend with @chaithyagr: https://github.com/mritools/mrrt.nufft Its a interesting one: fully written with a Python Stack (Cython / numba /Cupy) and...

nufft-backend

The Documentation should gives more information on the mathematics of the NUFFT, e.g. the gridding/spreading of non uniform points, the Oversampled grid, the deconvolution etc ..

documentation
feature request

This PR smooth some corners on ADMM, also there is some bonus minor improvement on POGM algorithm.

I reckon that I have started multiple PRs, moving forward here is a proposition for the integration of this work. I would recommend we use a squash+rebase strategie, to minimize...

enhancement
release

In the exported parquet file of a benchmark, the column "version-numpy" is of dtype `np.ndarray` as shown in the snippet below. This complicate the import and processing of the parquet...

This PR adds support for Variable density spiral generation. It is a port to Python of the code of Brian Hargreaves from http://mrsrl.stanford.edu/~brian/vdspiral/ The associated publication is here: https://onlinelibrary.wiley.com/doi/full/10.1002/mrm.10644 Note...