# How to choose which segmentation is overlaid on the volume

**URL:** <https://discourse.slicer.org/t/how-to-choose-which-segmentation-is-overlaid-on-the-volume/36756>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [June 13, 2024, 1:23pm UTC](https://discourse.slicer.org/t/how-to-choose-which-segmentation-is-overlaid-on-the-volume/36756 "2024-06-13T13:23:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Figaya](https://avatars.discourse-cdn.com/v4/letter/f/eb9ed0/32.png) [@Figaya](https://discourse.slicer.org/u/Figaya)\
**Post date:** [June 13, 2024, 1:23pm UTC](https://discourse.slicer.org/t/how-to-choose-which-segmentation-is-overlaid-on-the-volume/36756/1 "2024-06-13T13:23:01Z")

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Hello,

I am new to 3D Slicer and am having difficulty understanding a few things.

I’ve imported a single series volume data and created two segmentations. Both segmentations have the same source volume. Here are the steps I performed:

1. In the first segmentation, I added a single red-colored segment with some threshold.
2. In the second segmentation, I followed the same step but with a yellow-colored segment.

After performing both steps, when I go back to the first segmentation, I still see the results of the second segmentation, specifically yellow regions instead of red regions.

As per my understanding, shouldn’t red regions appear in the first segmentation and yellow regions in the second segmentation?

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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:** [June 13, 2024, 1:29pm UTC](https://discourse.slicer.org/t/how-to-choose-which-segmentation-is-overlaid-on-the-volume/36756/2 "2024-06-13T13:29:48Z")

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You can see and edit multiple segmentations. If you want to show/hide a segmentation then you can click the eye icon. `Data` module gives a good overview of what data you have and allows you to show/hide them.