Fig. 3

Ischemic burden on a segment model basis. Bulls-eye graphs representing the mean signal intensity in the same patient as in fig. 2 according to a 16-segment model (a) and a 60-segment model (b) in arbitrary units, with darker colors representing lower signal intensity values indicating impaired myocardial perfusion. Top row: Caffeine-naïve adenosine stress perfusion demonstrating a larger extent of ischemic burden compared to the adenosine stress CMR after intake of caffeine in the same patient, bottom row