Temporal SNR in simulated cardiac-gated time series for varying flip angle, T1, and mean of stimulus onset asynchrony (SOA). Top: block design for varying T1 between 800 and 2000 ms. Bottom: event-related design using jittered SOA for a range of mean SOA, from 2 s to 20 s, and T1 of 1600 ms. Although tSNR values in the “T1 only” correction show a significant increase only around the flip angle of 90°, tSNR values in the “T1 & flip angle” correction exhibit an increase across the entire range of flip angles tested.