Figure 8
From: Influence of Off-resonance in myocardial T1-mapping using SSFP based MOLLI method
Using a lower flip angle (FA) trades SNR (precision) for improved accuracy and reduced off-resonance sensitivity. Simulation compares 20° and 35° readout flip angle for T1 = 1365 ms and T2 = 45 ms (representative values at 3T). T1 bias error due to the effects of readout on the inversion curve is -48 Hz and -81 Hz for FA = 20° and 35°, respectively. Sensitivity to off-resonance over ± 100 Hz is 98 ms and 164 ms for FA = 20° and 35°, respectively.