Fig. 3
Workbench 1—flow phantom with 8 pressure sensors (channel 1 to 8, CH1-CH8), with their location relative to the aortic valve (AV point at X location = 0), and the respective measurement of pressure recovery distance (PRecDist). A A slice of the magnitude of the CMR image, showing most of the locations of the eight pressure ports. B Measurement of the pressure recovery distance from the measured pressure acquired (ΔPmeasured) and interpolated from the eight sensors. C Advective pressure component (ΔPSAW) from the 4D flow CMR data and from simulation (computed fluid dynamics, CFD) along the centerline of the phantom with 100 ml/s constant flow. Note that sensor 8 is located at 500 mm after aortic valve (AV) and is not being presented in the diagram