Fig. 4.

T₁ times in the nine tubes for the three main sequence types (modified Look-Locker with inversion recovery (MOLLI), shortened MOLLI (ShMOLLI), saturation recovery single-shot acquisition (SASHA)) at 1.5 T (left) and 3 T (right) split according to vendor (Siemens, Philips). At 3 T, the contributed Philips MOLLI 5b(1b)1b(1b)1b was missing the iterative/data dropping steps in map creation as per Siemens ShMOLLI, so these data are not shown. Measured T₁ times by the 3 sequences (mean of multiple centers, no temperature correction) are represented by symbols. The line of identity, i.e., “reference” rT₁ times by slow inversion recovery is represented as a discontinuous gray line. For each sequence, correlations between absolute measurements of T₁ and rT₁ times are shown. Correlations for the much sparser GE data (MOLLI, ShMOLLI, SMART each n = 1) are not reported. Vertical error bars within each shape represent standard error of the mean. aR, adjusted R²; GE, General Electric Healthcare