Geometric Analysis of Type B Aortic Dissections Shows Aortic Remodeling After Intervention Using Multilayer Stents

Figures

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  Figure 1. Within MIMICS, axial slices were converted into a 3D model using a Hounsfield Units cutoff value of 175. Hereafter, the ascending aorta, aortic arch, descending aorta, abdominal aorta, bifurcation, and proximal iliac arteries were isolated (A–C). True and false lumens were smoothened and separated for further analyses (D).

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  Figure 2. (A) Morphologic analysis of the primary three symptomatic chronic type B aortic dissection cases with the longest follow-up obtained from CT scans, preoperative, postoperative, and at the latest follow-up. All geometries comprised aortic branches and true and false lumens. Pre-op indicates preoperative; post-op, postoperative; FU, follow-up. The alterations in true lumen volume (B), false lumen volume (C), true lumen diameter at the plane of maximum compression (D), and the false lumen index (E) of all 16 symptomatic chronic type B aortic dissections obtained from CT scans, preoperative, postoperative, and at the latest follow-up. PMC indicates the plane of maximum compression.

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  Figure 3. (A) Velocity maps of computational fluid dynamics (CFD) analyses of the primary three symptomatic chronic type B aortic dissection cases with the longest follow-up obtained from CT scans, preoperative, postoperative, and at the latest follow-up. All geometries comprised aortic branches and true and false lumens. Pre-op indicates preoperative; post-op, postoperative; FU, follow-up. (B) This figure presents the alterations in overall velocity and overall pressure calculated in the CFD models postoperatively per case.