[Insight-users] How to extract small blood vessel?

[Luis Ibanez]

Hi Fucang,

Level Set may not be able to deal with very small structures.

I would say that structures smaller that 5 pixels will not be
on the range of visibility for level sets.

If you are detecting blood vessels in this range of diameter,
you may want to use the statistical pattern recognition approach
used in the CurveExtractor demo application:

    http://www.itk.org/HTML/Curve2DExtraction.htm

This application is available in the "InsightApplications"
module.

It is using the Hessian on the intensity values at a certain
scale, in order to recognize the places where linear structures
are present in the image.

You will have to play a bit with the code in order to move it
to 3D...   there should be some fun in life   :-)


Please let us know if you have further questions,


   Thanks


    Luis


--------------------
Fucang Jia wrote:
> 
> Hi Luis, hi everyone,
> 
>> From your instructions, I believe that Geodesic Active Contour can 
>> extract 
> 
> blood vessel from MRA. I think in theory, Level Set method can not 
> extract one voxel wide or two voxel wide small blood vessel, is that right?
> 
> And are there some effect can solve this problem in the level set 
> framework?
> 
> Thanks for any advice.
> 
> Fucang
> 
> _________________________________________________________________
> 
> 
> _______________________________________________
> Insight-users mailing list
> Insight-users@public.kitware.com
> http://public.kitware.com/mailman/listinfo/insight-users
>