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Table 1 Listing of quantitative parameters in both patients.

From: Multidirectional flow analysis by cardiovascular magnetic resonance in aneurysm development following repair of aortic coarctation

  CASE 1
  Diam. [cm] Velmean [m/s] Velmax [m/s] WSSmag [N/m2] WSSax [N/m2] WSScirc [N/m2] OSI [%]
AAo 3.2 0.18 0.62 0.17 0.14 0.10 17.4
Transverse arch 2.3 0.20 0.77 0.23 0.22 0.08 10.4
DAo 3.0 0.08 0.36 0.13 0.11 0.07 16.8
Prox. Aneurysm neck 2.8 0.11 0.5 0.13 0.12 0.06 23.9
Aneurysm 4.7 0.03 0.18 0.14 0.11 0.08 19.4
Dist. Aneurysm neck 3.0 0.11 0.44 0.26 0.10 0.24 12.0
  CASE 2
AAo 2.6 0.19 0.58 0.29 0.24 0.17 12.5
Transverse arch 1.9 0.22 0.69 0.24 0.21 0.11 14.6
DAo 2.5 0.19 0.45 0.22 0.19 0.12 21.5
Prox. Aneurysm neck 2.2 0.15 0.48 0.14 0.11 0.09 19.8
Aneurysm 6.2 0.04 0.08 0.15 0.07 0.13 24.9
Dist. Aneurysm neck 2.5 0.16 0.40 0.19 0.16 0.11 19.8
  MEAN WSS BOTH CASES <WSSmag> [N/m2] <WSSax> [N/m2] <WSScirc> [N/m2] <OSI> [%]
  Average WSS AAo 0.23 0.19 0.14 15.0
  Average WSS Arch 0.24 0.22 0.10 12.5
  Average WSS Aneurysm 0.17 0.11 0.12 20.0
  1. Average and peak velocities are increased in the traverse tubular arch and substantially reduced inside the aneurysm. In both cases absolute (WSSmag) and in particularly axial (WSSax) wall shear stress are lower at the aneurysm wall compare to ascending aorta and transverse arch. Note that circumferential wall shear stress (WSScirc) in the aneurysm remains high or is regionally even increases most likely related to enhanced vortex or helix flow in the aneurysm. AAo = Ascending aorta, Dao = descending aorta, WSS = wall shear stress, OSI = oscillatory shear index, Diam = diameter, Vel = velocity.