# Using surface cut with curves

**URL:** <https://discourse.slicer.org/t/using-surface-cut-with-curves/10134>\
**Category:** Support\
**Created:** [February 6, 2020, 2:26am UTC](https://discourse.slicer.org/t/using-surface-cut-with-curves/10134 "2020-02-06T02:26:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [February 6, 2020, 2:26am UTC](https://discourse.slicer.org/t/using-surface-cut-with-curves/10134/1 "2020-02-06T02:26:23Z")

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Is it possible to use Surface Cut tool with fiducials that are already placed, particularly with curve ones?

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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:** [February 6, 2020, 3:19am UTC](https://discourse.slicer.org/t/using-surface-cut-with-curves/10134/2 "2020-02-06T03:19:17Z")

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Surface cut effect creates an enclosing surface of a point cloud, so it would not be directly applicable to a curve. How would you like to cut with a curve?

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [February 6, 2020, 4:36am UTC](https://discourse.slicer.org/t/using-surface-cut-with-curves/10134/3 "2020-02-06T04:36:03Z")

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I was using the curves to outline the boundaries of individual cranial bones, and I thought perhaps I can use them to do the segmentations…

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/4/d4c5d5031b3c9327ce1e3d2820807446cbbdec00.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:** [February 6, 2020, 4:51am UTC](https://discourse.slicer.org/t/using-surface-cut-with-curves/10134/4 "2020-02-06T04:51:27Z")

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In the next 6 months, we’ll implement parcellation of gray matter from curves drawn on segmented surfaces (and additional planes). It will be usable for splitting up a bone segment like the one you show above.

Until then, you can do this using Scissors module - see [Craniotomy segmentation recipe](https://lassoan.github.io/SlicerSegmentationRecipes/Craniotomy/).

You can also play with markups and see what surfaces you can get out of them using “Markups to model” extension.

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [February 6, 2020, 5:14am UTC](https://discourse.slicer.org/t/using-surface-cut-with-curves/10134/5 "2020-02-06T05:14:05Z")

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Sounds awesome. I will test the options, thanks again.