# Creating sub-segments

**URL:** <https://discourse.slicer.org/t/creating-sub-segments/18420>\
**Category:** Support\
**Created:** [June 30, 2021, 8:08am UTC](https://discourse.slicer.org/t/creating-sub-segments/18420 "2021-06-30T08:08:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![trash\_imp](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/trash_imp/32/11178_2.png) [@trash\_imp](https://discourse.slicer.org/u/trash_imp)\
**Post date:** [June 30, 2021, 8:08am UTC](https://discourse.slicer.org/t/creating-sub-segments/18420/1 "2021-06-30T08:08:20Z")

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While implementing `Grow from seeds`,

- In Slicer3D, we create new Segments when we want to split the dicom, and then we click on implement.

- I want to modify segments so that the children of a segment(sub-segments) are the split parts of the dicom, and we can click on a child to display it in 3D. When I hide a segment all its split masks also hide and when new segment is created, it will have no children initially.

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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 2, 2021, 3:36am UTC](https://discourse.slicer.org/t/creating-sub-segments/18420/2 "2021-07-02T03:36:35Z")

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Segmentations contain a list of segments (not a hierarchy). However, once you created all your segments, you can export them to models and you can organize models into a hierarchy by creating folders and drag-and-dropping models into the folders in the Data module.