# Skull surface segmentation using suture lines

**URL:** <https://discourse.slicer.org/t/skull-surface-segmentation-using-suture-lines/15577>\
**Category:** Support\
**Created:** [January 18, 2021, 5:10am UTC](https://discourse.slicer.org/t/skull-surface-segmentation-using-suture-lines/15577 "2021-01-18T05:10:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mucahit\_calisan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mucahit_calisan/32/9586_2.png) [@mucahit\_calisan](https://discourse.slicer.org/u/mucahit_calisan)\
**Post date:** [January 18, 2021, 5:10am UTC](https://discourse.slicer.org/t/skull-surface-segmentation-using-suture-lines/15577/1 "2021-01-18T05:10:09Z")

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Hello there,  
I am at the beginning stage of 3D slicer. I’m trying to make a video of Andras Lasso named “Bone surface segmentation using suture lines”. Can you help me? I wonder if you can share the full version of the video or the steps more descriptively. Thank you so much.

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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:** [January 18, 2021, 5:22am UTC](https://discourse.slicer.org/t/skull-surface-segmentation-using-suture-lines/15577/2 "2021-01-18T05:22:33Z")

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This has been discussed recently in these topics:

> [@Working with sutures \<1 voxel wide on infant skull CT](https://discourse.slicer.org/t/working-with-sutures-1-voxel-wide-on-infant-skull-ct/12389):
>
> Operating system: OS X Catalina (10.15.5) Slicer version: 4.10.2 r28257 Expected behavior: Use thresholding or threshold masking + grow from seeds to create accurate segmentation of skull Actual behavior: Unable to use automated methods to appropriately distinguish the sutures on CT scan from surrounding bone due to how small they are - either I have to under-threshold the scan and I lose the sutures entirely but retain all of the bony structures or I over-threshold the scan and lose all of t…

> [@Skull sutures in CT](https://discourse.slicer.org/t/skull-sutures-in-ct/12875):
>
> Hello everyone, I am new to 3D slicer. I am working on a research project that needs to extract the skull sutures. I was able to used manually to approximate them. I used “shift” to make the sutures more evident. I was wondering if there is a plugin that can help me to visualise and extract the sutures automatically?

I would suggest to try the techniques that were described there and let us know how it worked for you.