Vds spiral #129
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Vds spiral #129
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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 that the units are messed up for now compared to the conventions of MRI-NUFFT, but this can still provide some good results.
On top of the original code, I added support for in-out trajectories.
This opens new potential for MRI-NUFFT as this is the first trajectory generation that is procedural and dependent on target FOV. It is an early development phase, and a few things I wish would be addressed in the near future: