Japanese Circulation Society

IS147: Coronary Pressure Measurement and Fractional Flow Reserve
Nico H.J. Pijls, M.D., Ph.D.

Figure 2. The linear relation between perfusion pressure of the myocardium and blood flow (normal, upper left panel; stenosis, lower left panel). Maximal blood flow in stenosis compared to normal is reflected in the ratio of the perfusion pressures (right panel). (Pa, aortic pressure; Pd, diastolic pressure; FFR, fractional flow reserve.) Pijls 2000.