A numerical study on the effects of spatial and temporal discretization in cardiac electrophysiology
A numerical study on the effects of spatial and temporal discretization in cardiac electrophysiology
复制标题
心脏电生理学中空间和时间离散化影响的数值研究
DOI:
10.1002/cnm.3443
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发表时间:
2021
影响因子:
2.1
通讯作者:
Kaliske M.
中科院分区:
文献类型:
--
作者:
Woodworth L.A;Cansiz;Kaliske M.
Millions of degrees of freedom are often required to accurately represent the electrophysiology of the myocardium due to the presence of discretization effects. This study seeks to explore the influence of temporal and spatial discretization on the simulation of cardiac electrophysiology in conjunction with changes in modeling choices. Several finite element analyses are performed to examine how discretization affects solution time, conduction velocity and electrical excitation. Discretization effects are considered along with changes in the electrophysiology model and solution approach. Two action potential models are considered: the Aliev‐Panfilov model and the ten Tusscher‐Noble‐Noble‐Panfilov model. The solution approaches consist of two time integration schemes and different treatments for solving the local system of ordinary differential equations. The efficiency and stability of the calculation approaches are demonstrated to be dependent on the action potential model. The dependency of the conduction velocity on the element size and time step is shown to be different for changes in material parameters. Finally, the discrepancies between the wave propagation in coarse and fine meshes are analyzed based on the temporal evolution of the transmembrane potential at a node and its neighboring Gauss points. Insight obtained from this study can be used to suggest new methods to improve the efficiency of simulations in cardiac electrophysiology.
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影响因子:
2.1
作者:
K. R. Green;R. Spiteri
通讯作者:
R. Spiteri
DOI:
10.1002/cnm.1438
发表时间:
2011
影响因子:
2.1
作者:
P. Pathmanathan;Gary R. Mirams;James A. Southern;J. Whiteley
通讯作者:
J. Whiteley
DOI:
10.1002/cnm.2959
发表时间:
2018
影响因子:
2.1
作者:
Julia Hoermann;C. Bertoglio;M. Kronbichler;M. Pfaller;R. Chabiniok;W. Wall
通讯作者:
W. Wall
影响因子:
4.6
作者:
R. Spiteri;R. C. Dean
通讯作者:
R. C. Dean
影响因子:
7.2
作者:
F. Meier;C. Schwarz;E. Werner
通讯作者:
E. Werner