Balancing conduction velocity error in cardiac electrophysiology using a modified quadrature approach
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Conduction velocity error is often the main culprit behind the need for very fine spatial discretizations and high computational effort in cardiac electrophysiology problems. In light of this, a novel approach for simulating an accurate conduction velocity in coarse meshes with linear elements is suggested based on a modified quadrature approach. In this approach, the quadrature points are placed at arbitrary offsets of the isoparametric coordinates. A numerical study illustrates the dependence of the conduction velocity on the spatial discretization and the conductivity when using different quadrature rules and calculation approaches. Additionally, examples using the modified quadrature in coarse meshes for wave propagation demonstrate the improved accuracy of the conduction velocity with this method. This novel approach possesses great potential in reducing the computational effort required but remains limited to specific linear elements and experiences a reduction in accuracy for irregular meshes and heterogeneous conductivities. Further research can focus on developing an adaptive quadrature and extending the approach to other element formulations in order to make the approach more generally applicable.
Details
Original language | English |
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Article number | e3589 |
Number of pages | 22 |
Journal | International journal for numerical methods in biomedical engineering |
Volume | 38 |
Issue number | 5 |
Early online date | 10 Mar 2022 |
Publication status | Published - May 2022 |
Peer-reviewed | Yes |
External IDs
Scopus | 85127273943 |
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Mendeley | 23490006-68f4-34e6-af86-cacd7460d240 |
WOS | 000773023700001 |
ORCID | /0000-0002-7568-1918/work/110620494 |
Keywords
ASJC Scopus subject areas
Keywords
- cardiac electrophysiology, conduction velocity, finite element method, mesh sensitivity, quadrature