title: PTFE grafts and Doppler signals.
authors.forename: J C
authors.initials: JC
authors.lastname: Opie
mesh_terms: D001807:Blood Vessel Prosthesis; D006801:Humans; D011138:Polytetrafluoroethylene; D011651:Pulmonary Artery / Q000601:surgery; D012212:Rheology; D013348:Subclavian Artery / Q000601:surgery
chemical_list: D011138:Polytetrafluoroethylene