Solving the ECG forward problem by means of standard h- and h-hierarchical adaptive linear boundary element method: Comparison with two refinement schemes

Shou, Guofa, F., Xia, Ling, Jiang, Mingfeng, Liu, F and Crozier, S (2009) Solving the ECG forward problem by means of standard h- and h-hierarchical adaptive linear boundary element method: Comparison with two refinement schemes. IEEE Transactions on Biomedical Engineering, 56 5: 1454-1464. doi:10.1109/TBME.2008.2008442


Author Shou, Guofa, F.
Xia, Ling
Jiang, Mingfeng
Liu, F
Crozier, S
Title Solving the ECG forward problem by means of standard h- and h-hierarchical adaptive linear boundary element method: Comparison with two refinement schemes
Journal name IEEE Transactions on Biomedical Engineering   Check publisher's open access policy
ISSN 0018-9294
Publication date 2009-05-01
Year available 2009
Sub-type Article (original research)
DOI 10.1109/TBME.2008.2008442
Open Access Status
Volume 56
Issue 5
Start page 1454
End page 1464
Total pages 11
Editor Jose C. Principe
Place of publication USA
Publisher IEEE
Language eng
Subject 090303 Biomedical Instrumentation
090399 Biomedical Engineering not elsewhere classified
861502 Medical Instruments
970109 Expanding Knowledge in Engineering
C1
Abstract The boundary element method (BEM) is a commonly used numerical approach to solve biomedical electromagnetic volume conductor models such as ECG and EEG problems, in which only the interfaces between various tissue regions need to be modeled. The quality of the boundary element discretization affects the accuracy of the numerical solution, and the construction of high-quality meshes is time-consuming and always problem-dependent. Adaptive BEM (aBEM) has been developed and validated as an effective method to tackle such problems in electromagnetic and mechanical fields, but has not been extensively investigated in the ECG problem. In this paper, the h aBEM, which produces refined meshes through adaptive adjustment of the elements' connection, is investigated for the ECG forward problem. Two different refinement schemes: adding one new node (SH1) and adding three new nodes (SH3), are applied for the h aBEM calculation. In order to save the computational time, the h-hierarchical aBEM is also used through the introduction of the h-hierarchical shape functions for SH3. The algorithms, were evaluated with a single-layer homogeneous sphere model with assumed dipole sources and a geometrically realistic heart-torso model. The simulations showed that h aBEM can produce better mesh results and is more accurate and effective than the traditional BEM for the ECG problem. While with the same refinement scheme SH3, the h-hierarchical aBEM can save the computational costs about 9% compared to the implementation of standard h aBEM.
Keyword ECG
INVERSE ELECTROCARDIOGRAPHY
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 2003CB716106
2006AA02Z307
30570484
NCET-04-0550
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Information Technology and Electrical Engineering Publications
 
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Created: Thu, 03 Sep 2009, 18:02:24 EST by Mr Andrew Martlew on behalf of School of Information Technol and Elec Engineering