vivo three-dimensional blood velocity profile shapes in the human common, internal, and external carotid arteries

Basic Considerations


In vivo three-dimensional blood velocity profile shapes in the human common, internal, and external carotid arteries


Kamenskiy AV, Dzenis YA, MacTaggart JN, et al (Univ of Nebraska-Lincoln; Univ of Nebraska-Med Ctr, Omaha) J Vasc Surg 54:1011–1020, 2011§



A. Chandra, MD



Evidence Ranking


• D



Expert Rating


• 2



Abstract



Objective


True understanding of carotid bifurcation pathophysiology requires a detailed knowledge of the hemodynamic conditions within the arteries. Data on carotid artery hemodynamics are usually based on simplified, computer-based, or in vitro experimental models, most of which assume that the velocity profiles are axially symmetric away from the carotid bulb. Modeling accuracy and, more importantly, our understanding of the pathophysiology of carotid bifurcation disease could be considerably improved by more precise knowledge of the in vivo flow properties within the human carotid artery. The purpose of this work was to determine the three-dimensional pulsatile velocity profiles of human carotid arteries.



Methods


Flow velocities were measured over the cardiac cycle using duplex ultrasonography, before and after endarterectomy, in the surgically exposed common (CCA), internal (ICA), and external (ECA) carotid arteries (n = 16) proximal and distal to the stenosis/endarterectomy zone. These measurements were linked to a standardized grid across the flow lumina of the CCA, ICA, and ECA. The individual velocities were then used to build mean three-dimensional pulsatile velocity profiles for each of the carotid artery branches.

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Apr 1, 2017 | Posted by in CARDIOLOGY | Comments Off on vivo three-dimensional blood velocity profile shapes in the human common, internal, and external carotid arteries

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