PREVIOUS NEXT Back to low res Full Size Image

This is a 30% dose isosurface, clearly showing the shape of the beams, generated with a marching cubes algorithm. One problem with marching cubes is that the calculational time is proportional to the number of volume elements (over 300K here). This can be slow - too slow for interactive response, such as turning a dial interactor with the surface growing/shrinking in real-time. Thus, strong incentive exists to reduce the dose volume complexity by spatially filtering it down into a smaller number of elements.