Vessel reconstruction from centerlines/radius

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1

Hello everyone,

I am working on segmenting small cerebral arteries for future CFD studies.

After segmenting the small arteries that interest me, I am looking for a way to reconstruct an ideal (cylindrical) geometry from the average radius obtained for each segment/centerline with a smoothed intersection (blending type).

I have tried to create cylinders around each centerline with VTK librairy, but the intersections between cylinders are bad.

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Is there a method already implemented in 3D Slicer that could address this?

Thank you very much.

Gred

2

I’d suggest making a distance transform from the centerlines and then thresholding that to make the surface.

3

Hi, there is a vtk filter that should help a bit in this situation:

4

Hi Pieper, by making a distance transform from the centerlines, do you mean somethink like polyball modelling along the centerlines and get the isosurface?

5

I’ve never used the polyball feature of vmtk, but maybe it would work. I was thinking you can just fill a volume with the distance to the closest vessel segment and threshold that. There are probably many ways of doing this depending on how efficient you need it to be.