Journal: JVS-Vascular Science

Article Title: Rupture risk parameters upon biomechanical analysis independently change from vessel geometry during abdominal aortic aneurysm growth

doi: 10.1016/j.jvssci.2022.10.004

Figure Lengend Snippet: Endosize and Vascops data acquisition. The pictures display an exemplary three-dimensional computed tomography angiography (CTA) reconstruction after successful semiautomated segmentation. (A) Using Endosize, the neck diameter and length as well as α and β angulations are calculated. The maximum abdominal aortic aneurysm (AAA) diameter (D max ) is calculated perpendicular to the center line (red dotted line). The aortic/iliac tortuosity indices are calculated as the ratio centerline/raceline (black dotted arrow) between P2 (lowest renal artery)/P4 (aortic bifurcation) and P4/P8 (inguinal ligament), respectively. (B) Using Vascops A4 Clinics Research, the finite element method (FEM) captures areas (displayed as heatmap) and maximum points of intraluminal thrombus ( ILT , mm) thickness, peak wall stress ( PWS ; v. Mises stress, kPa) and peak wall rupture index ( PWRI ; rupture risk index). Orientation of reconstruction represented by anterior ( A ), posterior ( P ), left ( L ), and right ( R ).

Article Snippet: Semiautomated segmentation of CTAs was performed using Endosize (Therenva) for geometric variables (diameter, neck configuration, α/β angle, and vessel tortuosity) and for finite element method A4 Clinics Research Edition (Vascops) for additional variables (intraluminal thrombus [ILT]), vessel volume, PWS, PWRI).

Techniques: Computed Tomography

Journal: JVS-Vascular Science

Article Title: Rupture risk parameters upon biomechanical analysis independently change from vessel geometry during abdominal aortic aneurysm growth

doi: 10.1016/j.jvssci.2022.10.004

Figure Lengend Snippet: Endosize and Vascops data acquisition. The pictures display an exemplary three-dimensional computed tomography angiography (CTA) reconstruction after successful semiautomated segmentation. (A) Using Endosize, the neck diameter and length as well as α and β angulations are calculated. The maximum abdominal aortic aneurysm (AAA) diameter (D max ) is calculated perpendicular to the center line (red dotted line). The aortic/iliac tortuosity indices are calculated as the ratio centerline/raceline (black dotted arrow) between P2 (lowest renal artery)/P4 (aortic bifurcation) and P4/P8 (inguinal ligament), respectively. (B) Using Vascops A4 Clinics Research, the finite element method (FEM) captures areas (displayed as heatmap) and maximum points of intraluminal thrombus ( ILT , mm) thickness, peak wall stress ( PWS ; v. Mises stress, kPa) and peak wall rupture index ( PWRI ; rupture risk index). Orientation of reconstruction represented by anterior ( A ), posterior ( P ), left ( L ), and right ( R ).

Article Snippet: The aortic/iliac tortuosity indices are calculated as the ratio centerline/raceline (black dotted arrow) between P2 (lowest renal artery)/P4 (aortic bifurcation) and P4/P8 (inguinal ligament), respectively. (B) Using Vascops A4 Clinics Research, the finite element method (FEM) captures areas (displayed as heatmap) and maximum points of intraluminal thrombus ( ILT , mm) thickness, peak wall stress ( PWS ; v. Mises stress, kPa) and peak wall rupture index ( PWRI ; rupture risk index).

Techniques: Computed Tomography