Abstract: Objective Color doppler flow imaging(CDFI) was used to evaluate the effects of difficult arteriovenous fistula establishment for hemodialysis. Methods CDFI was used to monitor the establishment of blood vessel in Hemodialysis and estimate diameter of the vessels. CDFI was applied to select appropriate artery and vein before operation for arteriovenous fistula, and to analyze hemodynamic status and complications after operation in 176 patients with arteriovenous fistula which was difficult to establish in clinic for hemodialysis. Results Operations for establishing fistula were performed for the 176 cases and for 19 cases with subsequent intercurrent complications. Conclusion CDFI ultrasound could play important roles in choosing appropriate artery and vein before operation for arteriovenous fistula, and analyzing of hemodynamics and complications after operation.

Key words: color doppler flow imaging, hemodialysis, arteriovenous fistula