vtkImageData* cur = mReader.GetImage( (*it) );
memcpy(out->GetScalarPointer(0,0,slice), cur->GetScalarPointer(0,0,0), imsize);
slice++;
vtkImageData* cur = mReader.GetImage( (*it) );
memcpy(out->GetScalarPointer(0,0,slice), cur->GetScalarPointer(0,0,0), imsize);
slice++;