Waveform Index Evaluation using an Electronic Injection Phantom

Figure 1.8
Sinusoidal Control Waveform

"... for each of the three gain settings used (low, medium and high as defined in table 1.1) the mean pulsatility index (PI) was determined over a five cycle period using the Doptek's 15/16 percentile method. This was repeated six times to gain the mean and standard deviation figures shown in table 1.1 for the real waveform, and in table 1.2 for the control waveform depicted here."