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. Author manuscript; available in PMC: 2014 Apr 11.
Published in final edited form as: Magn Reson Med. 2008 Aug;60(2):462–467. doi: 10.1002/mrm.21634

Figure 5.

Figure 5

Reconstructions of 3.56x accelerated data using (a) LSQR-Hybrid with self-referenced coil sensitivity maps from 6 ACS lines, (b) LSQR-Hybrid with GEYSER using 52 (28 measured + 24 GRAPPA estimated) auto-calibration lines to estimate coil sensitivity, and (c) a single pass GRAPPA reconstruction. The acquired data for all images is identical. The improved quality visible in (b) compared to (a) is attributed to the use of GRAPPA to improve the coil sensitivity estimates. The measured standard deviation in the boxes is (b) LSQR-Hybrid:0.0094 and (c) GRAPPA:0.0286.