期刊
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
卷 29, 期 5, 页码 447-452出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ejmp.2013.02.001
关键词
Atherosclerosis; Coronary artery disease; Hemodynamics; Wall shear stress
This study investigates the hemodynamic changes to various types of coronary stenosis in the left coronary artery bifurcation, based on a patient-specific analysis. Twenty two patients with left coronary artery disease were included in this study. All stenoses involving the left coronary artery bifurcation were classified into four types, according to their locations: A) left circumflex (LCx) and left anterior descending (LAD), B) LCx only, C) left main stem only, and D) LAD only. Computational fluid dynamics (CFD) was performed to analyze the flow and wall shear stress (WSS) changes in all reconstructed left coronary geometries. Our results showed that the flow velocity and WSS were significantly increased at stenotic locations. High WSS was found at >70% lumen stenosis, which ranged from 2.5 Pa to 3.5 Pa. This study demonstrates that in patients with more than 50% stenosis in the left coronary artery bifurcation, WSS plays an important role in providing information about the extent of coronary atherosclerosis in the left coronary artery branch. (C) 2013 Associazione Italians di Fisica Medica. Published by Elsevier Ltd. All rights reserved.
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