Paper Info
Title
Evaluation of blood flow velocity waveform in common carotid artery using multi-branched arterial segment model of human arteries.
Abstract
Arteriosclerosis is considered to be a major cause of cardiovascular diseases, which account for approximately 30% of the causes of death in the world. We have recently demonstrated a strong correlation between arteriosclerosis (arterial elasticity) and two characteristics: maximum systolic velocity (Si) and systolic second peak velocity (S2) of the common carotid artery flow velocity waveform (CCFVW). The CCFVW can be measured by using a small portable measuring device. However, there is currently no theoretical evidence supporting the causes of the relation between CCFVW and arterial elasticity, or the origin of the CCFVW characteristics. In this study, the arterial blood flow was simulated using a one-dimensional systemic arterial segments model of human artery in order to conduct a qualitative evaluation of the relationship between arterial elasticity and the characteristics of CCFVW. The simulation was carried out based on the discretized segments with the physical properties of a viscoelastic tube (the cross-sectional area at the proximal and terminal ends, the length, and the compliance per unit area of the tube (C-S)). The findings obtained through this study revealed that the simulated CCFVW had shape similar characteristics to that of the measured CCFVW. Moreover, when the compliance C-S of the model was decreased, the first peak of the simulated-CCFVW decreased and the second peak increased. Further, by separating the anterograde pulse wave and the reflected pulse wave, which form the CCFVW, we found that the decrease in the first peak of the simulated CCFVW was due to the arrival of a reflected pulse wave from the head after the common carotid artery toward the arrival of a anterograde pulse wave ejected directly from the heart and that the increase in the second peak resulted from the arrival of the peak of the reflected pulse wave from the thoracic aorta. These results establish that the CCFVW characteristics contribute to the assessment of arterial elasticity. (C) 2013 Elsevier Ltd. All rights reserved.
Year
DOI
Venue
2013
10.1016/j.bspc.2013.05.005
Biomedical Signal Processing and Control
Keywords
Field
DocType
Common carotid,Hemodynamics,Fluid simulation,Artery segments model,Artery elasticity
Hemodynamics,Artery,Arterial blood,Blood flow,Arteriosclerosis,Internal medicine,Cardiology,Pulse wave,Flow velocity,Common carotid artery,Mathematics
Journal
Volume
Issue
ISSN
8
6
1746-8094
Citations 
PageRank 
References 
1
0.35
2
Authors
11
Name
Order
Citations
PageRank
Motoshi Masuda121.18
Takahiro Emoto244.93
Atsushi Suzuki3597.10
Akutagawa Masatake41311.43
Tomoki Kitawaki512.04
Kazuyoshi Kitaoka661.89
Hiroyuki Tanaka721.86
Shigeru Obara882.55
Kazuo Yoshizaki921.18
Shinsuke Konaka10345.97
Y. Kinouchi112216.80