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The Living Heart model. Anatomic model created from magnetic resonance images (left).60 Geometric model with the two atria, the two ventricles, the four valves, and the major vessels (middle, left).60 Finite element model with 208,561 linear tetrahedral elements and 47,323 nodes (middle, right).5 Muscle fiber model with 208,561 discrete fiber and sheet directions interpolated from geometric reconstruction (right).59
