Vmtk Network algorithm error for the big diameter change part

Dear , all and developers
I use the network extraction for the vessel model with big aneursym , but the network line go outside of the surface , seem not right. Is there solution for this situation?

Does centerline extraction work well?
Can you share the model so that we can do some more testing?

It is vmtk network extraction output, I use the vmtknetworkextraction script.
Very grateful for your support. Look forward to your feedback.
Here is the STL model link:

yes, If I use "vmtkcenterlines " and select two points near and far, it appear normal like:

but the network is