Figure 4

Myocardial perfusion reserve threshold. The scatter-plots show myocardial perfusion reserve (MPR) values from normal and significantly diseased perfusion territories with both systolic and diastolic 3D-perfusion CMR (x = mean value, solid line = median value). The optimal MPR cut-off values determined by receiver-operating characteristic analysis are also plotted (dashed lines, 1.75 for systole and 2.02 for diastole).