Coupled Simulation of Hemodynamics and Vascular Growth and Remodeling in a Subject-Specific Geometry.
Coupled Simulation of Hemodynamics and Vascular Growth and Remodeling in a Subject-Specific Geometry.
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DOI:
10.1007/s10439-015-1287-6
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发表时间:
2015-07
影响因子:
3.8
通讯作者:
Shadden SC
中科院分区:
文献类型:
--
作者:
Wu J;Shadden SC
A computational framework to couple vascular growth and remodeling (G&R) with blood flow simulation in a 3D patient-specific geometry is presented. Hyperelastic and anisotropic properties are considered for the vessel wall material and a constrained mixture model is used to represent multiple constituents in the vessel wall, which was modeled as a membrane. The coupled simulation is divided into two time scales–a longer time scale for G&R and a shorter time scale for fluid dynamics simulation. G&R is simulated to evolve the boundary of the fluid domain, and fluid simulation is in turn used to generate wall shear stress and transmural pressure data that regulates G&R. To minimize required computation cost, the fluid dynamics are only simulated when G&R causes significant vascular geometric change. For demonstration, this coupled model was used to study the influence of stress-mediated growth parameters, and blood flow mechanics, on the behavior of the vascular tissue growth in a model of the infrarenal aorta derived from medical image data.
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影响因子:
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作者:
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DOI:
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