Fig. 6.

Regional differences in intramyocardial pressures (IMPs) at axial locations of the base (A), center (B), and apex (C) of the left ventricle. At each axial location, IMP at 3 transmural regions of subendocardium (solid line), midwall (dotted line), and subepicardium (dash-dotted line) is shown. The highest values of IMP at an axial location are in the subendocardium and the lowest in the subepicardium. Transmural perfusion density differences at different axial locations of the base (D), center (E), and apex (F) locations show higher values in the subendocardium in diastole.