[Insight-users] Curved Planar Reformatting for Vessels

[Luis Ibanez]

Hi Dan,


   Your suggestion seem to be a good way to go.


You can use any of the KernelTransforms along with
the ResampleImageFilter.


Just feed the TargetLandmarks array with the points
that you have in the center line of your vessel image.

Set the SourceLandmarks to be located in a simple
straight line.


Note that the "source" space is where the reformated
image will be created. Resampling is done by visiting
all the pixels in the "flattened" image and finding
their corresponding locations in the original image.



The followingg Examples can help you get started:


    Insight/Examples/Registration/
              ThinPlateSplineWarp.cxx
              LandmarkWarping2.cxx


    Note that if you want to see the deformation
    field (e.g. using ParaView) you may want to
    use the "itkDeformationFieldSource" class as
    illustrated in the LandmarkWarping2.cxx
    example.



         This could be a nice paper
         for the Insight Journal  :-)




    Regards,


        Luis


--------------------
Dan Mueller wrote:
> Hi all,
> 
> I am interested in visualizing vessels using curved planar reformatting 
> (CPR): the vessel is stretched flat along the centerline and the 
> surrounds deformed to accommodate.
> 
> Does ITK implement curved planar reformatting for 3-D images?
> 
> I have been unable to find any existing functions in ITK to achieve this 
> easily. The itkExtractOrthogonalSwath2DImageFilter is close, but appears 
> to only work on 2-D images. I suspect I might be able to use a 
> deformable transform coupled with the itkResampleImageFilter, but 
> obviously the difficulty is in specifying the transform kernel given an 
> itkPolyLineParametricPath. Currently I am able to extract paths 
> representing the centerlines, but I'm stuck as to where to go from 
> there. Does anyone have any pointers / ideas?
> 
> Thanks for any help.
> 
> Cheers, Dan
> 
> 
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