Fig. 4.

Failure process in human basilar artery specimens. Four levels of deformation during loading to failure are shown. Row 1: DB-FT for (a) #H2 and (b) #H5; Row 2: Rect-FT for (c) #H8 and (d) #H11; as well as Row 3: Rect-SP for (e) #H14 and (f) #H17. Location of tear that led to catastrophic failure is marked by a white arrowhead or circled, where identifiable. Adventitial side of sample is facing camera.