Fig. 1From: Optimisation of ultrasound liver perfusion through a digital reference object and analysis toolSchematic diagram of the process for theoretically obtaining the optimum input parameters minimising output variability. AUC area under the curve, D downslope, MI maximum intensity, MTT mean transit time, PI perfusion index, TIC time-intensity curve, TTP time to peak, U upslope, US ultrasoundBack to article page