# Artery-tumor intersection points

**URL:** <https://discourse.slicer.org/t/artery-tumor-intersection-points/23070>\
**Category:** Support\
**Created:** [April 21, 2022, 9:01am UTC](https://discourse.slicer.org/t/artery-tumor-intersection-points/23070 "2022-04-21T09:01:52Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![mikebind](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Post date:** [April 22, 2022, 4:09pm UTC](https://discourse.slicer.org/t/artery-tumor-intersection-points/23070/5 "2022-04-22T16:09:23Z")

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I’m sure this is possible at the VTK level and I would not be surprised if this is possible somehow in Slicer or a current Slicer extension, but I personally do not know how to find intersection points of a markups curve with a surface model. In [this](https://discourse.slicer.org/t/intersection-two-models-plane-and-centerlines-ct-mr/4130/3) forum thread ([Intersection two models (Plane and centerlines CT/MR) - #3 by shahrokh](https://discourse.slicer.org/t/intersection-two-models-plane-and-centerlines-ct-mr/4130/3)), I see someone has shared code for finding intersections of curves with a plane using vtkCutter, but I think this will not quite work for your purposes because it looks like vtkCutter uses an implicitly described surface (easy for a plane but maybe less so for your vessel segments). I also found this link: [https://kitware.github.io/vtk-examples/site/Cxx/ImageData/IntersectLine/](https://kitware.github.io/vtk-examples/site/Cxx/ImageData/IntersectLine/), which seems closer to what you are trying to do, but again may not be exactly it.

@mau_igna_06, do you have any suggestions?

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