Cardiac anisotropy in boundary-element models for the electrocardiogram.
The boundary-element method (BEM) is widely used for electrocardiogram (ECG) simulation. Its major disadvantage is its perceived inability to deal with the anisotropic electric conductivity of the myocardial interstitium, which led researchers to represent only intracellular anisotropy or neglect an...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 47; no. 7; pp. 719 - 730 |
|---|---|
| Autores principales: | , , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Springer Nature
Jul2009
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104906633&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104906633 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Jul2009 vid: 47 iid: 7 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104906633 NLM19306030 2010304521 10.1007/s11517-009-0472-x NLM19306030 PMC2688616 104906633 ppf: 719 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Cardiac anisotropy in boundary-element models for the electrocardiogram. aug: au: Potse M Dubé B Vinet A Potse, Mark Dubé, Bruno Vinet, Alain affil: Research Center, Sacré-Coeur Hospital, 5400 Boulevard Gouin Ouest, Montreal, QC, H4J 1C5, Canada sug: subj: Electrocardiography Models, Biological Methods Comparative Studies Human ab: The boundary-element method (BEM) is widely used for electrocardiogram (ECG) simulation. Its major disadvantage is its perceived inability to deal with the anisotropic electric conductivity of the myocardial interstitium, which led researchers to represent only intracellular anisotropy or neglect anisotropy altogether. We computed ECGs with a BEM model based on dipole sources that accounted for a "compound" anisotropy ratio. The ECGs were compared with those computed by a finite-difference model, in which intracellular and interstitial anisotropy could be represented without compromise. For a given set of conductivities, we always found a compound anisotropy value that led to acceptable differences between BEM and finite-difference results. In contrast, a fully isotropic model produced unacceptably large differences. A model that accounted only for intracellular anisotropy showed intermediate performance. We conclude that using a compound anisotropy ratio allows BEM-based ECG models to more accurately represent both anisotropies. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|