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).
Hu et al. BMC Cardiovascular Disorders 2012 12:115 doi:10.1186/1471-2261-12-115