Αποτελέσματα Αναζήτησης
26 Δεκ 2019 · Figure 1. 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.
Arterial elasticity imaging: comparison of finite-element analysis models with high-resolution ultrasound speckle tracking Grant Kruger 2010, Cardiovascular Ultrasound
4 Μαΐ 2021 · An arterial wall has both elastic and viscous characteristics, and pathological and degenerative changes in the wall tissue affect the viscoelastic behavior of the artery wall. The arterial viscoelasticity may provide useful information regarding the development and progression of arterial diseases.
1 Σεπ 2015 · A key factor contributing to the successful simulation using one-dimensional models is the inclusion of elastic properties of blood vessel walls. This paper is devoted to the comparative analysis...
These tests yield two measurements: stress, which. is the pulling force divided by the. cross-sectional area of the material, and. strain, which is the change in length (deformation) divided by the original. length of the material. Some materials have linear elasticity.
2 Μαΐ 2005 · PDF/EPUB. Abstract. Early cardiovascular disease can be identified in asymptomatic individuals by noninvasive evaluation of functional and structural abnormalities of the vasculature and heart. These abnomalities are usually a consequence of endothelial dysfunction.
We carried out a simple numerical test to determine the elastic modulus for the arterial wall. The relationship between the external radius and inner pressure of a straight pipe, which is assumed to represent a straight portion of the artery, is numerically investigated by using different values for the elastic modulus (E = 500 kPa, 1 MPa, 1 GPa).
