Angiography was performed at 1 month after operation,the PG group kept patency in 6 dogs(60%),and e-PTFE group in 5 dogs(71.4%). At 3 months after operation,the angiography showed patency in 5 dogs of PG group(62.5%) and 4 dogs in P group(66.7%).

• 术后3个月动脉造影检查后；生物血管组(PG)通畅5只；通畅率62.；5%25；e-PTFE组通畅4只；通畅率66