Figure 3

Simultaneously acquired B0-map (b) and B1-map (c) of a mid-short axis slice (slice 4), (a) is showing the magnitude image. Shim, F0 and RF power settings were optimized across the entire heart and applied in a second acquisition: The peak-to-peak off-resonance over the enture heart was improved from 302 Hz to 194 Hz, and the average desired B1 field strength improved from 70% to 107%.