Pulsed and Color Doppler Analysis of Normal Carotid Bifurcation Flow Dynamics Using an In-Vitro Model
- 1 March 1990
- journal article
- research article
- Published by SAGE Publications in Angiology
- Vol. 41 (3), 241-247
- https://doi.org/10.1177/000331979004100310
Abstract
An anatomically accurate model of the human carotid bifurcation was studied by using color Doppler flow mapping and pulsed Doppler signal analysis. In concordance with dye injection studies, a zone of flow separation was clearly demonstrated at the origin of the internal carotid artery opposite the flow divider. This zone of flow reversal was detected when the ratio of external to common carotid flow rates was greater than 0.27 and became progressively larger as the ratio increased, finally evolving into a zone of heterogenous flow at a ratio greater than 0.5. The authors conclude that the zone of flow reversal seen in the human carotid artery is a geometric property of the bifurcation and that its size depends on the relative flow between both branches. Doppler color imaging can be used to noninvasively map out its extent.This publication has 13 references indexed in Scilit:
- Structural details of boundary layer separation in a model human carotid bifurcation under steady and pulsatile flow conditionsJournal of Vascular Surgery, 1985
- Flow velocity patterns in the carotid bifurcations of young, presumed normal subjectsJapanese Journal of Clinical Oncology, 1983
- A critical study of ultrasound Doppler spectral analysis for detecting carotid diseaseJapanese Journal of Clinical Oncology, 1982
- Effect of flow split on separation and stagnation in a model vascular bifurcation.Stroke, 1981
- Flow disturbances at the apex and lateral angles of a variety of bifurcation models and their role in development and manifestations of arterial disease.Stroke, 1979
- Localization and Sequence of Development of Atherosclerotic Lesions in the Carotid and Vertebral ArteriesCirculation, 1971
- Static zones in the internal carotid artery: correlation with boundary layer separation and stasis in model flowsThe British Journal of Radiology, 1970
- Acute Vascular Endothelial Changes Associated with Increased Blood Velocity GradientsCirculation Research, 1968
- Electromagnetic studies on the blood flow through the carotid system in manNeurology, 1962
- Atherosclerosis and occlusion of the internal carotid arteryThe Journal of Pathology and Bacteriology, 1956