Fig. 1
From: Robust free-breathing SASHA T1 mapping with high-contrast image registration
Bloch equation simulation of a sinusoidal-ramped variable flip angle (VFA) bSSFP readout for native myocardium (T1/T2 = 1175/50 ms) and blood (T1/T2 = 1650/240 ms). a Readout flip angles are increased in a sinusoidal ramp pattern for 120° SASHA-VFA (green circles) and 70° SASHA-VFA (dashed blue line). b Signal evolution of myocardium (blue) and blood (red) for a non-saturated image using 120° SASHA-VFA. Typical k-space center locations for the primary and high-contrast images are marked with light blue and dashed red boxes respectively. c Signal evolution for a saturation recovery image using 120° SASHA-VFA