# Segmentation is not showing as 3d model

**URL:** <https://discourse.slicer.org/t/segmentation-is-not-showing-as-3d-model/15270>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [December 29, 2020, 3:03pm UTC](https://discourse.slicer.org/t/segmentation-is-not-showing-as-3d-model/15270 "2020-12-29T15:03:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Auguris](https://avatars.discourse-cdn.com/v4/letter/a/0ea827/32.png) [@Auguris](https://discourse.slicer.org/u/Auguris)\
**Post date:** [December 29, 2020, 3:03pm UTC](https://discourse.slicer.org/t/segmentation-is-not-showing-as-3d-model/15270/1 "2020-12-29T15:03:22Z")

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Operating system: MacOS 11.1  
Slicer version: Slicer 4.10.2  
Expected behavior: Showing 3 Model  
Actual behavior: Only showing 2d model

Dear all,  
I am trying to manually segment the liver using slicer. With the older versions I was able to direcly create 3D Models of the liver, however when using the new version and using the command “grow from seeds” only a 2d model appears (see attached picture). Maybe one of you can help me, thank you so much in advance

 ![Bildschirmfoto 2020-12-29 um 13.12.36](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/4/c48c19fe2ea32c83d4ebbb84b8cffd39bba1f492.jpeg)

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**Author:** ![manjula](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/manjula/32/80981_2.png) [@manjula](https://discourse.slicer.org/u/manjula)\
**Post date:** [December 29, 2020, 4:05pm UTC](https://discourse.slicer.org/t/segmentation-is-not-showing-as-3d-model/15270/2 "2020-12-29T16:05:52Z")

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have you not applied the initialization? So the preview segment replaces the original segment.

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**Author:** ![Auguris](https://avatars.discourse-cdn.com/v4/letter/a/0ea827/32.png) [@Auguris](https://discourse.slicer.org/u/Auguris)\
**Post date:** [December 29, 2020, 4:20pm UTC](https://discourse.slicer.org/t/segmentation-is-not-showing-as-3d-model/15270/3 "2020-12-29T16:20:05Z")

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> [@manjula](#):
>
> initialization

Hi Manjula, thanks for your kind and quick reply. No so far I have not known initialization and neither applied it. The normal steps I follow are:

- drawing the liver and outer segment
- growing from seeds
- manually finetuning by erasing overlapping volume  
and this always worked (see attached picture).  
How can I use initialization?  
Thank you very much for your help ![Bildschirmfoto 2020-12-29 um 17.18.46](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/d/5d8077a82503229b89bdf45b628100bc0865d7d2.jpeg)

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**Author:** ![manjula](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/manjula/32/80981_2.png) [@manjula](https://discourse.slicer.org/u/manjula)\
**Post date:** [December 29, 2020, 4:23pm UTC](https://discourse.slicer.org/t/segmentation-is-not-showing-as-3d-model/15270/4 "2020-12-29T16:23:52Z")

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This tutorial shows the liver segmentation with grow from seed

[![](https://img.youtube.com/vi/R-lBsqAvSTA/maxresdefault.jpg "3D Slicer Tutorial #3: Scissors. Grow from seeds.") ](https://www.youtube.com/watch?v=R-lBsqAvSTA)