(a) Illustration of the wideband FLASH-MOLLI acquisition scheme. The FLASH images were acquired over 13 heart beats during a single breath-hold. (b) Plots of measured T1 using the wideband FLASH-MOLLI as a function of off-resonance in phantom experiments. Wideband FLASH-MOLLI produced consistent T1 estimation over 3.4 KHz. Reference T1 values (Ref T1) were determined using a standard inversion recovery spin-echo sequence.