Automagically find the ACS

mckib2 / pygrappa

Python implementations of GRAPPA-like algorithms.

https://pygrappa.readthedocs.io/en/latest/

MIT License

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Automagically find the ACS #59

Closed mckib2 closed 4 years ago

mckib2 commented 4 years ago

Given the assumption that the ACS region is a hyper-rectangle with origin at the center, we would like to be able to able to detect it inside of kspace instead of passing it separately in calib.

Useful for Siemens data which comes as kspace + calib when twixread is used
Without restriction that hyper-rectangle is at origin, this is a very hard problem with increasing dimensionality, so it would be reasonable to restrict to ndim<=3
Some work already done for 2D case in utils

mckib2 commented 4 years ago

mdgrappa is the only function so far to reference this functionality, but throws NotImplementedError when calib=None