# Can I calculate the narrowest area slice automatic for an artery from CTA

**URL:** https://discourse.slicer.org/t/can-i-calculate-the-narrowest-area-slice-automatic-for-an-artery-from-cta/7796
**Category:** Development
**Created:** [July 29, 2019, 10:46am UTC](https://discourse.slicer.org/t/can-i-calculate-the-narrowest-area-slice-automatic-for-an-artery-from-cta/7796 "2019-07-29T10:46:45Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![timeanddoctor](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/timeanddoctor/32/5839_2.png) [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)
#### Post date: [July 29, 2019, 10:46am UTC](https://discourse.slicer.org/t/can-i-calculate-the-narrowest-area-slice-automatic-for-an-artery-from-cta/7796/1 "2019-07-29T10:46:45Z")

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Can I calculate the narrowest slice automatic for an artery from CTA?

![t01aa8c27e450b545c1](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/f/af97781616ce98ac0fc02653868003347525fb9a.jpeg)

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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: [July 29, 2019, 1:03pm UTC](https://discourse.slicer.org/t/can-i-calculate-the-narrowest-area-slice-automatic-for-an-artery-from-cta/7796/2 "2019-07-29T13:03:19Z")

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You can use VMTK extension to compute centerline and radius of the vessel along the centerline.