Fig. 2

Changes in coronary area, peak flow velocity, and blood-flow during IHE. Individual data points of relative changes in coronary vasoreactive parameters with IHE are shown for healthy subjects (open circles, n = 19 coronary segments) and CAD patients (black triangles, n = 31 coronary segments) for coronary area, velocity and flow change in response to IHE. Adjacent to individual data points are bars showing mean +/- SD. There were statistically significant differences between healthy and CAD patients in all three vasoreactive parameters