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Indexed by:期刊论文

Date of Publication:2016-12-01

Journal:MEDICAL ENGINEERING & PHYSICS

Included Journals:SCIE、EI、PubMed、Scopus

Volume:38

Issue:12

Page Number:1439-1448

ISSN No.:1350-4533

Key Words:Theoretical modeling; Electrical conductivity; Arterial pulsatile blood flow; Elastic tube; Rigid tube

Abstract: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.