Fig. 2

Measured coronary velocity: raw data and post-processed data. A real coronary artery signal measured in a patient indicates a significant variability from cycle to cycle (length of one cycle equals 0.83 s). The figure depicts the in vivo signal, divided in periods of the same length (thin gray lines) and the resulting averaged filtered velocity profile (thick line). In addition, minimum and maximum measured velocities at a given time are marked as circles