Günther, T.Poliwoda, C.Reinhart, C.Hesser, J.Männer, R.Meinzer, H.-P.Baur, H.-I.Strasser, W.2014-02-062014-02-061994--https://doi.org/10.2312/EGGH/EGGH94/103-108Architecture and applications of a massively parallel processor are described. Volumes of 256x256x128 voxels can be visualized at a frame rate of 10 Hz using volume oriented visualization algorithms. A prototype of the scalable and modular system is currently set up. 3D rotation around an arbilrary rotation axis, perspective, zooming, and arbilrary gray value mapping are provided in real-time. Multi user access over high-speed networks is possible. A volume oriented visualization algorithm is used that is tailored to the requirements in medicine [5]. With this algorithm, small structures of a size down to the pixel resolution, and structures without defined surfaces can be visualized as well as semi-trans parent objects. One application of the system is therapy planning in heart surgery.