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Noninvasive cardiac source imaging from potential and magnetic field data (1999)

Wach, Paul ; Fischer, Gerald ; Tilg, Bernhard ; [et al.]

Bradford : Emerald

Compel 18 (1999), S. 236-249

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ISSN: 0332-1649

Source: Emerald Fulltext Archive Database 1994-2005

Topics: Electrical Engineering, Measurement and Control Technology , Mathematics

Notes: Ventricular surface activation time maps are estimated from simulated and measured body surface potential (BSP) maps and extra-corporal magnetic field maps. In a first step the transfer matrix, relating the primary cardiac sources to the measured potential and/or magnetic field data, is calculated applying the boundary element method. Activation times are determined by minimizing a cost function which is based on this transfer matrix. This optimization method is solved by a quasi Newton method. The critical point theorem is used in order to estimate the starting column matrix.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1108/03321649910274757

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