Fig 2.

Computational fluid dynamics (CFD)-predicted velocity contours on a longitudinal cross section of the abdominal aortic aneurysm (AAA) at different times of the cardiac cycle. From left: Systolic acceleration, systolic peak, systolic deceleration, diastole. It is possible to appreciate the presence of a main flow channel originating in the neck and characterized by higher velocities. Lower velocities and recirculation are present in the aneurysmal sac, especially at the level of the rupture site. The shade of both lumen and wall geometry is shown.