is it able to cut a pipe by given a circle vertices on it, by SelectPolyData/ImplicitSelectionLoop?ERROR:Can't follow egde. Set EdgeSearchMode to Dijkstra.

[lassoan (Andras Lasso)]

@gpu

Is there some way to split the big mesh to many small meshes which each one is just a single branch?

Yes, VMTK can split the vessel tree to branches.