In vtkDICOMGenerator, make slice ordering depend on OriginAtBottom.
In vtkDICOMGenerator, make slice ordering depend on OriginAtBottom.

MR and CT images, or any SOP class that uses the ImagePlaneModule,
will be unaffected by this.  However, the SC SOP Classes do not set
an (x,y,z) position for each slice, so slice ordering for them is
crucial.

hendradarwin/vtk-dicom,hendradarwin/vtk-dicom,hendradarwin/vtk-dicom,dgobbi/vtk-dicom,dgobbi/vtk-dicom,dgobbi/vtk-dicom