Fig. 4
T1 and T2 values in T1MES. T1 and T2 values in the phantom mimic those of myocardium and blood pre and post-GBCA at 1.5 T (Panel a) and 3 T (Panel b). The 13 relaxometry scopes (refer to Table 2) are explained in the figure. Slow scan reference data for T1|T2 is displayed in green (for T1 by slow IRSE and for T2 by slow SE, RR interval 900 ms at 21 ± 2 °C), T1 values shown in orange represent the mean value per tube derived from tests on five of the E-model phantoms (using a 5(3)3 256-matrix RR = 900 ms at 21 ± 2 °C variant of MOLLI adapted for native T1 mapping; Siemens WIP 448B at 1.5 T and WIP 780B at 3 T), and in blue are T1|T2 values obtained by the manufacturer in Australia using a 1.4 T Bruker minispec relaxometer at 22 °C. Tube arrangement is such that long T1 tubes potentially suffering from more artifacts are kept towards the middle of the phantom and away from the corners. GBCA = gadolinium-based contrast agents; IRSE = inversion recovery spin echo; myo = myocardium; RR = inter-beat interval; SE = spin echo. All T1|T2 values are stated in ms. Other abbreviation as in Fig. 2