Artery Research

Volume 16, Issue C, December 2016, Pages 1 - 7

Experimental verification of the healthy and atherosclerotic coronary arteries incompressibility via Digital Image Correlation

Authors
Alireza Karimia, c, *, Toshihiro Serab, Susumu Kudob, Mahdi Navidbakhsha
aTissue Engineering and Biological Systems Research Laboratory, School of Mechanical Engineering, Iran University of Science and Technology, Tehran 16887, Iran
bDepartment of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
cBasir Eye Health Research Center, Tehran 14186, Iran
*Corresponding author. Department of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. Fax: +81 92 802 3237. E-mail address: karimia@outlook.com (A. Karimi).
Corresponding Author
Alireza Karimi
Received 18 February 2016, Revised 12 July 2016, Accepted 12 August 2016, Available Online 1 September 2016.
DOI
https://doi.org/10.1016/j.artres.2016.08.002How to use a DOI?
Keywords
Coronary artery, Atherosclerosis, Poisson’s ratio, Strain rate, Digital Image Correlation
Abstract

So far there is no study to measure the Poisson’s ratio of the human coronary arteries in order to verify their incompressibility regardless of being healthy or atherosclerosis. It has been reported that atherosclerosis alters the elastin content of the arterial wall which is responsible for the elastic behavior of the arterial wall and helps tissue to reserve its initial shape after contracting or stretching. It is believed that the arterial walls are almost incompressible with nonlinear anisotropic mechanical response under axial or circumferential loading. Although the elastic modulus and Poisson’s ratios were both originally stemmed from the linear solid mechanics, they can be employed to address the linear elastic mechanical properties of the arterial wall under small deformation/strain. To date, many studies assumed the arterial wall as an incompressible material whether via a direct mechanical measurement or a fluid simulation study in the arterial wall, despite there is no enough supporting evidence. The present study was planned to discover this issue in detail using Digital Image Correlation (DIC) technique to lively measure the induced strains of 9 healthy and 8 atherosclerotic human coronary arteries at two different longitudinal strain rates, i.e., 5 and 20 mm/min. The Poisson’s ratio of the arterial walls, thereafter, were measured as a value of transverse strain with respect to the longitudinal strain. The results revealed the mean Poisson’s ratio of 0.49098 and 0.49330 for the healthy and atherosclerotic arterial walls, respectively, under the strain rate of 5 mm/min. Furthermore, the Poisson’s ratio of 0.49156 and 0.49702 were seen in the healthy and atherosclerotic arterial walls, respectively, under the strain rate of 20 mm/min. The results well verified the incompressibility of the coronary arterial walls regardless of being healthy or atherosclerotic under the both strain rates.

Copyright
© 2016 Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Journal
Artery Research
Volume-Issue
16 - C
Pages
1 - 7
Publication Date
2016/09
ISSN (Online)
1876-4401
ISSN (Print)
1872-9312
DOI
https://doi.org/10.1016/j.artres.2016.08.002How to use a DOI?
Copyright
© 2016 Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved.
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - JOUR
AU  - Alireza Karimi
AU  - Toshihiro Sera
AU  - Susumu Kudo
AU  - Mahdi Navidbakhsh
PY  - 2016
DA  - 2016/09
TI  - Experimental verification of the healthy and atherosclerotic coronary arteries incompressibility via Digital Image Correlation
JO  - Artery Research
SP  - 1
EP  - 7
VL  - 16
IS  - C
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2016.08.002
DO  - https://doi.org/10.1016/j.artres.2016.08.002
ID  - Karimi2016
ER  -