Figure 6
Intima hyperplasia of stents under scanning electronic microscopy was shown 6–10 months after stenting. (A-D). Five months after stenting, fusiform and stripe-like endothelial cells were presented on the internal surface of balloon-expandable covered (A), self-expandable covered (B, C), and bare (D) stent. The arrow in figure A indicates the stent strut. Some materials from the blood were present on the surface. (E–H). At the 6th month, fusiform and stripe-like endothelial cells were presented on the surface of balloon- (E, F) and self-expandable (G, H) covered stent. (I-K). Nine months later, fusiform and stripe-like endothelial cells were shown on the internal wall of the balloon- (I) and self-expandable (J) covered stent and bare (K) stent. (L) Ten months later, fusiform and stripe-like endothelial cells were on the self-expandable covered stent.
