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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Magn Reson Med. 2017 Nov 28;80(1):286–293. doi: 10.1002/mrm.27030

Figure 2.

Figure 2

Reconstruction pipeline of conventional GRASP (a) and GROG-GRASP (b). For GRASP, computationally expensive convolution gridding and regridding steps are performed in each iteration. For GROG-GRASP, this is overcome by shifting the acquired radial k-space data with GROG on a conventional Cartesian grid as pre-processing step. Similar to the radial DCF (rDCF) which is repeatedly applied during the conventional GRASP reconstruction, a weighting filter W is employed for GROG-GRASP to improve reconstruction performance.