title: Evaluation of the diagnostic criteria for the localization of acquired arteriovenous fistulas by color Doppler flow imaging.
abstract: OBJECTIVE
  To evaluate the diagnostic criteria for the localization of acquired arteriovenous fistulas (AVFs) by color Doppler flow imaging (CDFI) based on the features of their hemodynamic changes.
  
  
  METHODS
  The shape and hemodynamic changes of involved vessels which could be helpful to localize the sites of fistulas were studied according to the observation of 10 cases of acquired AVFs.
  
  
  RESULTS
  The sites of the fistulas could be shown by two-dimensional ultrasonography and color flow imaging in 40% and 80% cases, respectively. In all cases, turbulent high-velocity flow was present at the sites of the fistulas, low resistant flow was present in the arteries proximal to the fistulas, and artery-like flow was detected in the veins.
  
  
  CONCLUSIONS
  CDFI was accurate for the localization of acquired AVFs, which were mainly localized by their hemodynamic changes shown by pulse Doppler ultrasound.
authors.affiliation: Department of Ultrasound, PUMC Hospital, CAMS & PUMC, Beijing 100730.
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.forename: S
authors.initials: S
authors.lastname: Cai
authors.forename: Y
authors.initials: Y
authors.lastname: Jiang
authors.forename: J
authors.initials: J
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D001164:Arteriovenous Fistula / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018615:Ultrasonography, Doppler, Color / Q000592:standards; D018084:Ultrasonography, Interventional / Q000592:standards