Fig 5. Contour plot of the aneurysm formation indicator (AFI) at MSD. The blue color corresponds to complete reversal in wall shear stresses (WSS), green corresponds to a 90° rotation of WSS, and red implies that the instantaneous WSS vector aligns with the reference value, the temporal average of WSS. A, B, and C correspond to cases I, II and III, respectively. The insets show the location of the aneurysms. The most significant values of this indicator tend to correlate with the area of subsequent aneurysm development.