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Three-dimensional uniform grid modeling of electrical defibrillation on a data parallel computer.

S Gao·A Nadeem·O C Deale·B B Lerman·K T Ng
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Abstract

Finite element modeling has played an increasingly important role in the study of defibrillation. In order to model well the complex anatomical details, a large number of elements are required in the finite element grid, leading to a large set of equations that often cannot be solved effectively with the computational power of conventional computers. In this paper, we describe the use of a data parallel computer to provide the memory and reduction in solution time for solving these large finite element problems. Using a uniform grid and a nodal assembly technique, the discretized problem domain can be mapped efficiently to the parallel computer, allowing the solution of problems with over two million unknowns. The finite element algorithm for a three-dimensional inhomogeneous anisotropic body is described together with its parallel implementation. Test results for a canine torso model constructed from CT images are also presented.

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AlgorithmsAnimalsAnisotropyComputer PeripheralsDogsElectric ConductivityElectric CountershockNumerical Analysis, Computer-AssistedRadiography, ThoracicSignal Processing, Computer-AssistedThoraxTomography, X-Ray ComputedJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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S Gao, A Nadeem, O C Deale, B B Lerman, K T Ng. 1995. Three-dimensional uniform grid modeling of electrical defibrillation on a data parallel computer.. https://doi.org/10.1016/0010-4825(95)00018-y

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