Application of the TR-FOCI adiabatic pulses in the phantoms and volunteers. a) Radial bSSFP image of the phantom with compartment T1 and T2 values that approach blood (bright center) and myocardium (darker outer layer). A HS8-derived TR-FOCI pulse with pulse energy 4Ws was used in the T2Prep. b) The same image, but with a 4Ws standard HS1 pulse. Distortions due to insufficient pulse energy can be clearly observed c) Contrast-to-noise ratio plots in the volunteers show that significantly less energy is required by the optimized pulses to obtain the same CNR. d) and e) In vivo human HS1-derived TR-FOCI image with T2Prep pulse energy ~4Ws: the superior performance of the optimized pulse compared to the standard HS1 pulse T2Prep can be clearly observed.