Figure 5
From: Magnetic resonance velocity imaging derived pressure differential using control volume analysis
Comparison of PC-MR derived pressure and sensor measurements. Terms in the momentum conservation equation for the phantom control volume in dyne during a cycle in msec. Inertial, momentum flow (inflow only), and viscous force terms were estimated from axial PC-MR imaging in the phantom. Comparison to the method of Urchuk and Plewes (UP) [24] for the inertial, viscous, and pressure force are also shown. Good agreement between the CV and Urchuck/Plewes method for the computed inertial force and hence pressure force is observed. The measured pressure force was calculated directly from the pressure sensor output, Figure 6, and the flow area of the phantom.