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21 Σεπ 2016 · We begin with a brief, general discussion of measurement and modeling of cardiovascular tissue viscoelasticity. We then review known viscoelastic behavior of arteries, veins, capillaries, blood...
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We begin with a brief, general discussion of measurement and...
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26 Δεκ 2019 · Top, the typical nonlinear relation between luminal pressure and area in large elastic arteries, explained by the progressive shift in load bearing from elastin to collagen fibers. Data translate into distensibility and pulse wave velocity (PWV) with the use of the Bramwell-Hill relation.
6 Ιουλ 1999 · PDF/EPUB. Abstract. Background —–The effects of smooth muscle relaxation on arterial wall mechanics are controversial. We used a new, in vivo, noninvasive technique to measure brachial artery wall mechanics under baseline conditions and following smooth muscle relaxation with nitroglycerin (NTG).
Large, elastic arteries are composed of cells and a specialized extracellular matrix that provides reversible elasticity and strength. Elastin is the matrix protein responsible for this reversible elasticity that reduces the workload on the heart and dampens pulsatile flow in distal arteries.
1 Μαΐ 2013 · The first techniques, developed to evaluate arterial stiffness, use indirect measurements such as pulse wave velocity or the analysis of variations in intra-arterial pressure and volume to estimate arterial stiffness.
20 Δεκ 2021 · In this paper, we present a localised method for incorporating the effects of elastic walls into blood flow simulations using the lattice Boltzmann method implemented by the open-source code...
Some materials have linear elasticity. That is, when you plot stress versus strain, you get a straight line whose slope conveys the elastic stiffness, or modulus, of the material. Like most bio logical materials, however, blood vessels exhibit nonlinear elasticity. Their elastic stiffness is not constant but increases with the magnitude of ...