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The Effects of Thoracic Inhomogeneities on the Relationship Between Epicardial and Torso Potentials

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3 Author(s)
Stanley, P.C. ; Department of Biomedical Engineering, Duke University ; Pilkington, T.C. ; Morrow, M.N.

This study examines the effects of the lungs, spine, sternum, and the anisotropic skeletal muscle layer on the relationship between torso and epicardial potentials. Boundary integral equations representing potentials on the epicardial surface, the torso surface, and the internal conductivity interfaces were solved yielding a set of transfer coefficients valid for any source inside the epicardium and for any conductivity configuration outside the epicardial surface. These transfer coefficients relate potentials on the torso to potentials on the epicardial surface. Calculated torso potentials are generated via the transfer coefficients and measured epicardial potentials for comparison to measured torso potentials. This comparison indicates whether including the thoracic inhomogeneities improves attainable accuracy in calculations relating torso potentials to epicardial potentials.

Published in:

Biomedical Engineering, IEEE Transactions on  (Volume:BME-33 ,  Issue: 3 )