# Reconstruction of the Physiological Behavior of Real and Synthetic Vessels in Controlled Conditions
## 3 Results
### Wall Displacement  
Firstly, wall displacement was measured with the Set up (Table 2). For iliac arteries with different frequencies of pulsation, a similar wall displacement was observed (for 60 s\({}^{-1}\), 75 s\({}^{-1}\), 90 s\({}^{-1}\), 105 s\({}^{-1}\), and 120 s\({}^{-1}\), 0.142 \(\pm\) 0.002 mm, 0.144 \(\pm\) 0.003 mm, 0.144 \(\pm\) 0.004 mm, 0.142 \(\pm\) 0.002 mm, and 0.141 \(\pm\) 0.004 mm, respectively) (Figure 4a,b). For ePTFE vascular prostheses, an increase in the frequency of pulsation led to a decrease in wall displacement (for 60 s\({}^{-1}\), 75 s\({}^{-1}\), 90 s\({}^{-1}\), 105 s\({}^{-1}\) and 120 s\({}^{-1}\), 0.741 \(\pm\) 0.190 mm, 0.683 \(\pm\) 0.107 mm, 0.670 \(\pm\) 0.095 mm, 0.593 \(\pm\) 0.103 mm and 0.600 \(\pm\) 0.071 mm, respectively) (Figure 4c,d).  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Frequency of** **Pulsation [1/s]**} & \multirow{2}{*}{**Ejection Volume**} & **Wall Displacement** & **Wall Displacement for** **for** **Iiac Artery** & **ePTFE Vascular** \\  & & **[mL]** & **(Measured with** & **Prosthesis (Measured** \\  & & **Set-Up) [mm]** & **with Set-Up) [mm]** \\ \hline
75 & 70 & 0.14 & 0.56 \\
75 & 70 & 0.15 & 0.53 \\
75 & 70 & 0.15 & 0.51 \\
75 & 70 & 0.15 & 0.54 \\
75 & 70 & 0.15 & 0.51 \\
90 & 70 & 0.14 & 0.39 \\
90 & 70 & 0.14 & 0.38 \\
90 & 70 & 0.14 & 0.40 \\
90 & 70 & 0.14 & 0.39 \\
90 & 70 & 0.14 & 0.40 \\ \hline \hline \end{tabular}
\end{table}
Table 2: Wall displacement for the iliac artery and ePTFE vascular prosthesis. Values are measured in millimeters.  
Figure 3: Comparison of set-up and 2 DSTT for: (**a**) iliac arteries for FP = 75 min\({}^{-1}\); (**b**) iliac arteries for FP = 90 min\({}^{-1}\); (**c**) ePTFE vascular prosthesis for FP = 75 min\({}^{-1}\); (**d**) ePTFE vascular prosthesis for FP = 90 min\({}^{-1}\) with the use of Bland\(-\)Altman analysis. The analyzed group consisted of \(n\) = 6. Statistical significance was considered for all analyses with a threshold of \(p\) < 0.05.  
An example of the analyzed objects (iliac artery and ePTFE vascular prosthesis) is presented in Figures 5 and 6. The degree of deformation was illustrated with triangles. Each time, greater flexibility of the iliac arteries was observed compared to the ePTFE vascular prostheses.  
Figure 4: The wall displacement (WD) of: (**a**) iliac arteries as function of frequency of pulsation (FP) for FP = 75 min\({}^{-1}\); (**b**) iliac arteries as a function of frequency of pulsation (FP) for FP = 90 min\({}^{-1}\); (**c**) ePTFE vascular prosthesis as a function of frequency of pulsation (FP) for FP = 75 min\({}^{-1}\); (**d**) ePTFE vascular prosthesis as a function of frequency of pulsation (FP) for FP = 90 min\({}^{-1}\); analyzed cases consisted of \(n\) = 120.  
Figure 5: An example of the iliac artery movement for: (**a**) EV = 70 mL, FP = 60 min\({}^{-1}\); (**b**) EV = 70 mL, FP = 75 min\({}^{-1}\); (**c**) EV = 85 mL, FP = 60 min\({}^{-1}\); (**d**) EV = 85 mL, FP = 75 min\({}^{-1}\). For each analyzed case, two centerlines were added. Centerlines illustrate how the vessel works for different hemodynamic parameters. Moreover, triangles were added to illustrate the degree of the vessel’s deformation/bent as area under the centerlines. Colors for each case were as follows: orange—EV = 70 mL, FP = 60 min\({}^{-1}\); blue—EV = 70 mL, FP = 75 min\({}^{-1}\); green—EV = 85 mL, FP = 60 min\({}^{-1}\); red—EV = 85 mL, FP = 75 min\({}^{-1}\).