Fig. 2

Simulations of the Bloch Equations for potential off-resonance errors in T₁ measured using the dual TR technique with AHP excitation, at the lowest B₁⁺ expected in vivo at the depth of the heart, i.e. ~ 10 cm from the coil. The simulations were performed for resonance offsets ranging from − 180 Hz to 180 Hz from the centre frequency and for the T₁ values ranging from 1 s to 10 s. The 20% error margin for T₁ estimation is depicted as a grey dashed line