Fig 4 -

Estimated g-factor noise amplification in a phantom using the 4-channel and the 10-channel coils, at (a) R = 2 and (b) R = 3. Reconstructions as well as retained SNR (inverse g-factor) maps of a single coronal slice are shown for both coils and at both acceleration factors. The bottom row shows the maximum g-factor in each slice for both the transverse and coronal acquisitions. Note that the maximum g-factor values are shown using a different y-axis scaling in Fig (a) than in Fig (b).