Title :
Three-dimensional modeling of electrical defibrillation on a massively parallel computer
Author :
Hutchinson, S.A. ; Gao, S. ; Ai, L. ; Ng, K.T. ; Deale, O.C. ; Cahill, P.T. ; Lerman, B.B.
Author_Institution :
New Mexico State Univ., Las Cruces, NM, USA
Abstract :
A finite-element solver for electrical defibrillation analysis has been developed on a massively parallel computer, Thinking Machines Corporation´s Connection Machine 2 (CM-2), which allows a high degree of parallelism and the solution of large problems. The solver uses a nodal assembly technique where each node in the finite-element grid is mapped to a virtual processor in the computer. Using this solver, potential and current density distributions during transthoracic defibrillation have been calculated for different anatomic models, including a realistic 3-D finite-element model constructed from a series of cross-sectional magnetic resonance imaging (MRI) images of a mongrel dog. Numerical results obtained with this model are presented together with computational performance data for the algorithm
Keywords :
bioelectric phenomena; cardiology; digital simulation; finite element analysis; medical computing; parallel algorithms; patient treatment; physiological models; Connection Machine 2; anatomic models; computational performance data; cross-sectional magnetic resonance imaging; current density distribution; electrical defibrillation analysis; finite-element grid; finite-element solver; massively parallel computer; mongrel dog; nodal assembly technique; potential distribution; transthoracic defibrillation; virtual processor; Assembly; Biomedical computing; Concurrent computing; Current density; Defibrillation; Electric potential; Finite element methods; Grid computing; Magnetic resonance imaging; Parallel processing;
Conference_Titel :
Computers in Cardiology 1992, Proceedings of
Conference_Location :
Durham, NC
Print_ISBN :
0-8186-3552-5
DOI :
10.1109/CIC.1992.269361
