I call this technique deep rendering. I basically stacked graphical cross-sections (in this case, MRI rendering data), using proper increments and clip through them with the camera. This way I am able to explore all internal components in full 3D real-time. I actually was able to figure out how to colorize different organs to help distinguish them apart from each other but couldnt get the shader to render real-time in Maya. Credit MRI scans courtesy of University of Washington Digital Anatomist Program