Fig. 4.

Geometric indices from 3-dimensional (3D) models. A: qualitative depiction of aorta centerlines on day 28. Interval spacing, 2 mm. B: quantitative measure of diastolic aorta tortuosity (centerline length/height) over time showing that groups with abdominal aortic aneurysms (AAAs) are more tortuous. C: longitudinal measurements of surface area of diastolic aortic lumen divided by centerline length showing that the β-aminopropionitrile-elastase (B + E) group always had increased surface area/length once aneurysmal (P < 0.01). *P ≤ 0.05; **P ≤ 0.01; ****P ≤ 0.0001. E, elastase only; HI, heat inactivated.