title: The preoperative duplex examination.
abstract: BACKGROUND
  Duplex evaluation of varicose veins has been described since 1986, but is still not used as routine examination prior to surgery.
  
  
  OBJECTIVE
  To illustrate the importance of preoperative duplex varicose vein scan for the selection of operation and as a guide to surgery.
  
  
  METHODS
  Illustration of varicose patterns and anatomical details provided by duplex but difficult or impossible to obtain by other means.
  
  
  CONCLUSIONS
  Routine preoperative duplex evaluation is mandatory if varicose vein surgery is to be done on patients with accurate diagnosis.
authors.forename: M
authors.initials: M
authors.lastname: Georgiev
mesh_terms: D006801:Humans; D007866:Leg / Q000098:blood supply; D018616:Ultrasonography, Doppler, Duplex / Q000295:instrumentation; D014648:Varicose Veins / Q000000981:diagnostic imaging* / Q000601:surgery; D014680:Veins / Q000000981:diagnostic imaging / Q000601:surgery