Figure 1

a) Schematic of the proposed pulse sequence, where a T₂prep composite pulse is inserted between the inversion pulse and the data acquisition. Through changing the time of the T₂prep composite (Δt₂), the inversion-composite interval (Δt₁) and composite-acquisition interval, the contrast between, healthy myocardium, blood pool and scar can be controlled. b) Simulated contrast maps that shows the contrast of the three tissues for different combinations of Δt₁ and Δt₃, in both standard LGE (Δt₂=0), and the proposed BB-LGE (Δt₂ =35ms). In conventional LGE, the null lines of myocardium and blood do not intersect at a common point, preventing simultaneously nulling of both tissues. However, in the BB-LGE, a common null point can be obtained. c) The signal evolution curve for the three tissues when using conventional LGE and the proposed sequence.