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Human heart model created from magnetic resonance images, left. The mesh consists of 46,896 linear tetrahedral elements, 13,831 nodes, and 55,324 degrees of freedom, middle. The fiber orientation created from a feature-based Poisson interpolation varies gradually from -70° in the epicardium, the outer wall shown in blue, to +80° in the endocardium, the inner wall shown in red, right.
