Fig 1.
Hybrid treatment for Crawford type III TAAA with Marfan syndrome.
Left: the preoperative CTA image of TAAA; Middle: the retrograde revascularization from bilateral CIA; Right: The angiography of DSA for the RVR with bilateral CIA following hybrid treatment.
Fig 2.
A) Structure of normal AA; B) RVR using unilateral quar-furcated graft; C) RVR using bilateral bi-furcated grafts. CA-celiac artery, LRA-left renal artery, RRA-right renal artery, SMA- superior mesenteric artery, LCIA-left common iliac artery, RCIA-right common iliac artery.
Fig 3.
Mesh generations of AA with RVR; A) Structure of normal AA; B) AA with quar-furcated bypass graft; C) AA with bi-furcated bypass graft; D) Zoom-in View of boundary layer.
Fig 4.
The WSS distributions along the aorta centerline were presented at two different meshes.
Fig 5.
Histograms of the flow split for each branch artery A) healthy abdominal aorta; B) RVR using unilateral quar-furcated graft; C) RVR using bilateral bi-furcated grafts.
Fig 6.
A1, A2)the graft bifurcation; B1, B2) the aorta bifurcation; C1, C2) the anastomosis region. A1, B1, C1 represent the local regions of the RVR with unilateral quar-furcated graft; A2, B2, C2 represent the local regions of the RVR with bilateral bi-furcated grafts.
Fig 7.
The streamlines superimposed the contour maps of velocity magnitude in the symmetry planes.
A1, A2) the graft bifurcation; B1,B2) the aorta bifurcation; C1,C2) the anastomosis region. A1,B1,C1 represent the local regions of the RVR with unilateral quar-furcated graft; A2,B2,C2 represent the local regions of the RVR with bilateral bi-furcated grafts.
Fig 8.
To have a better view of the effect of graft type on the hemodynamic parameters, 8 slices of the configurations were chosen for the calculation of the area-averaged WSS and pressure drop.
a) the sketch of the 8 slices. b) the area-averaged pressure drop. c) area-averaged WSS.