grappa¶

Simple GRAPPA implementation for learning purposes.

Please use Gadgetron’s implementation if you need to use GRAPPA for real.

mr_utils.recon.grappa.grappa.grappa2d(coil_ims, sens, acs, Rx, Ry, kernel_size=(3, 3))[source]¶

Simple 2D GRAPPA implementation.

Parameters:	coil_ims (array_like) – Coil images with sensity weightings corresponding to sens. sens (array_like) – Coil sensitivy maps. acs (array_like) – Autocalibration signal/region measurements. Rx (int) – Undersampling factor in x dimension. Ry (int) – Undersampling factor in y dimension. kernel_size (tuple) – Size of kernel, (x, y).
Returns:	recon – Reconstructed image from coil images and sensitivies.
Return type:	array_like