Hello Did you try using the vtkProbeFilter for sampling from the grayscale volume? You can find some examples about probing along lines and planes in the VTK example code. -- View this message in context: http://vtk.1045678.n5.nabble.com/Creating-Curved-MPR-Image-tp4802388p4802571.html Sent from the VTK - Users mailing list archive at Nabble.com.