    image_viewer = vtkImageViewer2()
    image_viewer.SetInputConnection(reader.GetOutputPort())
    render_window_interactor = vtkRenderWindowInteractor()
    image_viewer.SetupInteractor(render_window_interactor)
    image_viewer.Render()
    image_viewer.GetRenderer().SetBackground(colors.GetColor3d("SlateGray"))
--
    image_viewer = vtkImageViewer2()
    image_viewer.SetInputConnection(reader.GetOutputPort())
    # Slice status message
    slice_text_prop = vtkTextProperty()
    slice_text_prop.SetFontFamilyToCourier()
    slice_text_prop.SetFontSize(20)
