Secondary flow in peripheral vascular prosthetic grafts using vector Doppler imaging

TY - JOUR

T1 - Secondary flow in peripheral vascular prosthetic grafts using vector Doppler imaging

AU - Kokkalis, Efstratios

AU - Hoskins, Peter R.

AU - Corner, George A.

AU - Stonebridge, Peter A.

AU - Doull, Anthony J.

AU - Houston, J. Graeme

N1 - Copyright © 2013 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.

PY - 2013

Y1 - 2013

N2 - Prosthetic grafts are used for the treatment of peripheral arterial disease. Re-stenosis in the distal anastomosis of these grafts is a common reason for graft occlusion. The role of local hemodynamics in development of neo-intimal hyperplasia is well known. A new graft design has been proposed for the induction of optimized spiral flow in the host vessel. The secondary flow motions induced by this graft were compared with those of a control device. Both types of grafts were connected with vessel mimic and positioned in ultrasound flow phantoms with identical geometry. Constant flow rates were applied. Data collected in the cross-sectional view distal from the graft outflow and dual-beam vector Doppler was applied to create 2-D velocity maps. A single-spiral flow pattern was found for the flow-modified graft, and double or triple spirals for the control graft. In-plane maximum velocity was greater for the flow-modified graft than for the control device.

AB - Prosthetic grafts are used for the treatment of peripheral arterial disease. Re-stenosis in the distal anastomosis of these grafts is a common reason for graft occlusion. The role of local hemodynamics in development of neo-intimal hyperplasia is well known. A new graft design has been proposed for the induction of optimized spiral flow in the host vessel. The secondary flow motions induced by this graft were compared with those of a control device. Both types of grafts were connected with vessel mimic and positioned in ultrasound flow phantoms with identical geometry. Constant flow rates were applied. Data collected in the cross-sectional view distal from the graft outflow and dual-beam vector Doppler was applied to create 2-D velocity maps. A single-spiral flow pattern was found for the flow-modified graft, and double or triple spirals for the control graft. In-plane maximum velocity was greater for the flow-modified graft than for the control device.

U2 - 10.1016/j.ultrasmedbio.2013.07.014

DO - 10.1016/j.ultrasmedbio.2013.07.014

M3 - Article

C2 - 24120412

SN - 0301-5629

VL - 39

SP - 2295

EP - 2307

JO - Ultrasound in Medicine and Biology

JF - Ultrasound in Medicine and Biology

IS - 12

ER -