ecgsimECGSIM is an interactive simulation program that enables one to study the relationship between the electric activity of the ventricular myocardium and the resulting potentials on the thorax: QRST wave forms as well as body surface potential maps.
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map3dmap3d is a scientific visualization application written to display and edit complex, three-dimensional geometric models and scalar, time-based data associated with those models.
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seg3d cibcSeg3d is a view and segmentation tool for 3D image data.  Major applications include MRI and CT image stacks in which the goal is to extract features, organs, and shapes.  [Download]