A mathematical model utilizing two equal-strength opposing dipoles provided a better estimate of the location of an ectopic focus than relying solely on the potential minimum on the probe surface.
Does a mathematical model using two opposing dipoles improve the localization of ectopic ventricular beats compared to using only the potential minimum on the probe surface?
A mathematical model using two opposing dipoles to simulate anisotropic properties improves the localization of ectopic ventricular beats during intracavitary mapping.
The authors extend their previous technique of localizing an ectopic focus by utilizing the entire potential distribution on the probe to compute the spatial coordinates of the site of origin of ectopic ventricular beats as solution of an inverse problem in terms of sources. On the basis of previous investigations, they represent the unknown source, at QRS onset, by two equal-strength opposing dipoles located at the ends of a short segment whose midpoint was at the ectopic site. The two dipoles simulate the anisotropic properties of both cardiac sources and myocardial tissue in an infinite homogeneous conducting medium. Preliminary results indicate that the model gives a better estimate of the location of an ectopic focus than can be obtained by taking only into account the position of the potential minimum on the probe surface.>
Macchi et al. (Fri,) conducted a other in Ectopic ventricular beats. Mathematical model using two equal-strength opposing dipoles vs. Position of the potential minimum on the probe surface was evaluated on Estimate of the location of an ectopic focus. A mathematical model utilizing two equal-strength opposing dipoles provided a better estimate of the location of an ectopic focus than relying solely on the potential minimum on the probe surface.
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