Figure 4From: The in vivo performance of small-caliber nanofibrous polyurethane vascular grafts CT images taken 24 weeks after the surgery (i. e., shortly before the sample harvest.) (A) A PU graft showing excellent patency, smooth internal wall, and absence of stenosis. (B) A PTFE graft showing patency, yet clear stenosis at the distal anastomotic site (marked with white arrow).Back to article page