Velocity streamlines at 0.3 s and blood flow patterns at 0.1 s (systolic deceleration) and 0.3 s (diastolic phase) of one cardiac cycle for reconstructed AAA models.

(A) In Group A, the velocity magnitude at week 3 was much higher than in week 15. (B) At the section cut A-A’ normal to the centerline, the intensified bulk flow and obvious vortex formation were observed at week 3 instead of week 15. The flow recirculation and vortex formation were randomly distributed throughout the fusiform AAA. However, it shifted towards the anterior region of AAA in Group B. 3 weeks (a, c), 10 weeks (b, d).