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论文类型： 期刊论文

发表时间： 2016-12-01

发表刊物： MEDICAL ENGINEERING & PHYSICS

收录刊物： SCIE、EI、PubMed、Scopus

卷号： 38

期号： 12

页面范围： 1439-1448

ISSN号： 1350-4533

关键字： Theoretical modeling; Electrical conductivity; Arterial pulsatile blood flow; Elastic tube; Rigid tube

摘要： The electrical conductivity of pulsatile blood flow in arteries is an important factor for the application of the electrical impedance measurement system in clinical settings. The electrical conductivity of pulsatile blood flow depends not only on blood-flow-induced red blood cell (RBC) orientation and deformation but also on artery wall motion. Numerous studies have investigated the conductivity of pulsatile blood based on a rigid tube model, in which the effects of wall motion on blood conductivity are not considered. In this study, integrating Ling and Atabek's local flow theory and Maxwell-Fricke theory, we develop an elastic tube model to explore the effects of wall motion as well as blood flow velocity on blood conductivity. The simulation results suggest that wall motion, rather than blood flow velocity, is the primary factor that affects the conductivity of flowing blood in arteries. (C) 2016 IPEM. Published by Elsevier Ltd. All rights reserved.