Hi Roman Unfortunately, I don't have ITK to test it right now, but I'll check the vtkPartialVolumeModeller you mentioned. Many thanks. -- View this message in context: http://vtk.1045678.n5.nabble.com/Problem-with-vtkPolyDataToImageStencil-tp5714947p5714963.html Sent from the VTK - Users mailing list archive at Nabble.com.