a) Helix angle maps and transmural helix angle histograms of a midventricular slice. Gmax per channel is varied from 30 mT/m to 80 mT/m. Data reconstructed from only 4 signal averages at Gmax = 80 mT/m mimicking reduced SNR of the low Gmax acquisition is shown in the right column. b) Signed mean differences and RMSE for a sector wise analysis at apical, midventricular and basal level. The black boxes indicate the average over all sectors.