Sa. Jones et al., IN-VIVO MEASUREMENTS OF BLOOD-FLOW VELOCITY PROFILES IN CANINE ILIOFEMORAL ANASTOMOTIC BYPASS GRAFTS, Journal of biomechanical engineering, 119(1), 1997, pp. 30-38
In-vitro velocity profiles were recorded with a 20 MHz, 80-channel pul
sed Doppler ultrasound velocimeter in canine end-to-side ilio-femoral
anastomotic grafts. The geometries were obtained from casts of the ana
stomotic region, and flow rates were measured with electromagnetic flo
w probes. Three cases reported here include a ''standard'' geometry wh
ich was similar to previously studied in vitro models, a stenosed geom
etry, and a case with below average flow rate. Observed flow features
include separation at the hood and toe, movement of the floor stagnati
on point, and skewed profiles in the proximal outflow segment. Out-of-
plane curvature and lateral displacement of the anastomosis inlet appe
ar to have a strong effect on the flow fields. In addition, compliance
affects the instantaneous flow rates within the proximal and distal b
ranches.