Hmm, the example don't need to have a qtWidget to working. vtkImageViewer does have it's own renderer and interactor. What happens if you use the original version of this example? thanks, Jochen -- View this message in context: http://vtk.1045678.n5.nabble.com/DICOM-images-tp5713724p5713818.html Sent from the VTK - Users mailing list archive at Nabble.com.