[vtkusers] Up side down MPR's images

[Fireman Fireman]

Dear vtkusers and developers,
 
I'm using VTK for Multi-Planar Reformation (MPR).
 
I'm loading Dicom image (data) into a vtkStructuredPoints (Image1,Image2,Image3,...ImageN)
 
It works well with some series of images but not always.
 
In fact, sometimes the images are inverted(up side down == rotation 180°).
 
I could solve this problem by reversing the loading(ImageN,ImageN-1,...Image1)
 
I have not found a way to detect when I need to load the volume in normal way or inverted.
 
For now I use a comparison between SliceLocation that does not work in all cases:
 
            if(SliceLocation_ImageN > SliceLocation_ImageN-1)

                           I reverse the loading(ImageN,ImageN-1,...Image1)
           else
                         (Image1,Image2,Image3,...ImageN)

Thanks,
B.wassim

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