In the fields of science, medicine and engineering, there are demands of visualizing varieties of simulation data. Simulation data are often tetrahedral volume data. Therefore, comprehensible visualization of tetrahedral volume data is important. Recently, we proposed the "Particle-Based Surface Rendering (PBSR)". It is a kind of point rendering. We need not sort rendering primitives along the line of sight, so we can visualize large-scale data quickly and sorting error will not happen. Furthermore, it is easy to realize fused visualization. In this paper, first, we apply the PBSR to tetrahedral volume data, which has not been done so far. Next, we propose two kinds of fused visualization for tetrahedral data. In any case, we have not seen any rendering artifact that often appears in the traditional transparent rendering methods. The PBSR for tetrahedral volume data is beneficial to analyze varieties of tetrahedral simulation data in scientific and medical fields.
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