Figure 2

These charts show the individual myocardial perfusion reserve (MPR) values from normal and significantly diseased perfusion territories with both systolic and diastolic acquisition (x=mean value, solid line = median value). The optimal cut-off MPR values determined by receiver-operating characteristic (ROC) analysis are also plotted (dashed lines, 1.75 for systole and 2.02 for diastole). ROC analysis found MPR had a high diagnostic accuracy for the detection of CAD, in both systole and diastole (area under curve: 0.92 vs. 0.94 respectively; p=0.41).