Wall shear stress and pressure patterns in aortic stenosis patients with and without aortic dilation captured by high-performance image-based computational fluid dynamics
Fig 10
Pressure signal taken as a time series of pressure at a probe located on the aortic wall slightly upstream of neck arteries (the probe is marked in magenta on the left column of Fig 9, and is located at centre of the HWSS zone) for TAVI0, TAVI 1, TAVI 2, and Idealized cases. Cases TAVI 0 and Idealized show distinct pressure build up.
Cases TAVI 1 and TAVI 2 lack a pressure build up, but show strong oscillations near peak flow which is shown by the dimenstionless parameter |δp|max/pi, where δp denotes twice the maximum amplitude of the oscillations, and pi is the initial pressure value taken at 3QA instance.