ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

Fig.2 Inlet velocity profile indicating the peak systolic conditions of cardiac cycle (7)
Fig.3 Pressure difference: Healthy aorta model (left) and Obtained pressure difference
from healthy aorta model
4. RESULTS
4.1 Sampling line and times
To analyze the effect of post treatments for aneurysm, we compared the pressure and
WSS distribution on the outer aorta wall before and after treatment as shown in Figure 4
(left). Moreover, we used three sampling times as shown in Figure 4 (right): when blood
flow velocity at inlet of the aorta is increasing (time t= 0.35), is at peak (time t = 0.45)
and is decreasing (time t = 0.55)
Fig.4 Sampling line (left) and times (right): the sampling line indicates red line. The
sampling times were obtained by calculation.
4.2 Pressure results
Pressure distribution on outer wall of aorta before and after treatment at sampling times
are shown in Figure 5, 6, 7(red line is the pressure distribution of multiple model , blue