# Extraction of artery radius along the centerline 

**URL:** <https://discourse.slicer.org/t/extraction-of-artery-radius-along-the-centerline/13527>\
**Category:** Support\
**Created:** [September 17, 2020, 12:39pm UTC](https://discourse.slicer.org/t/extraction-of-artery-radius-along-the-centerline/13527 "2020-09-17T12:39:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![irnjsn](https://avatars.discourse-cdn.com/v4/letter/i/71e660/32.png) [@irnjsn](https://discourse.slicer.org/u/irnjsn)\
**Post date:** [September 17, 2020, 12:39pm UTC](https://discourse.slicer.org/t/extraction-of-artery-radius-along-the-centerline/13527/1 "2020-09-17T12:39:29Z")

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Hi everyone,

I realized a segmentation of the femoral artery and used Extract Centerline to obtain the coordinates of the centerline. The data extracted from this centerline gives a radius (I guess an average one) of the complete artery.  
I would like to be able to know the radius of the arteries at any point of my centerline, how can I do that?  
I extracted the position of each point defining the centerline but cannot find how to obtain the radius for each of this point.

Thank you !

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 17, 2020, 12:41pm UTC](https://discourse.slicer.org/t/extraction-of-artery-radius-along-the-centerline/13527/2 "2020-09-17T12:41:44Z")

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If you output the extracted centerline as a model then radius is available as point data. See [Examples section of VMTK extension documentation](https://github.com/vmtk/SlicerExtension-VMTK#examples) for details.