# Converting volume to segment?

**URL:** <https://discourse.slicer.org/t/converting-volume-to-segment/1826>\
**Category:** Support\
**Created:** [January 12, 2018, 7:31pm UTC](https://discourse.slicer.org/t/converting-volume-to-segment/1826 "2018-01-12T19:31:40Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![tnguyen](https://avatars.discourse-cdn.com/v4/letter/t/6f9a4e/32.png) [@tnguyen](https://discourse.slicer.org/u/tnguyen)\
**Post date:** [January 12, 2018, 7:31pm UTC](https://discourse.slicer.org/t/converting-volume-to-segment/1826/1 "2018-01-12T19:31:40Z")

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Hi everyone,

I am new to Slicer and I have a quick question,  
I used the Editor module to carve out a volume and make a model with that volume (resulting in a nrrd and mrml files). I thought this was a segment and attempted to use some of Slicer quantitation functions for segments, however, Slicer doesn’t recognize it as a segment. I guess my question is how do I make a segment after having a volume/model?  
Thank you

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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 12, 2018, 7:50pm UTC](https://discourse.slicer.org/t/converting-volume-to-segment/1826/2 "2018-01-12T19:50:36Z")

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Use Segment Editor module instead of the legacy Editor module. To carve out parts from a volume, you can use Mask volume effect (it is available in the SegmentEditorExtraEffects extension).

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**Author:** ![tnguyen](https://avatars.discourse-cdn.com/v4/letter/t/6f9a4e/32.png) [@tnguyen](https://discourse.slicer.org/u/tnguyen)\
**Post date:** [January 12, 2018, 8:28pm UTC](https://discourse.slicer.org/t/converting-volume-to-segment/1826/3 "2018-01-12T20:28:07Z")

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Thanks so much for replying!  
I will use the Segment Editor to make segment, is there a way to salvage the volume I already have by changing it to segment somehow?

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**Author:** ![HarishRRao](https://avatars.discourse-cdn.com/v4/letter/h/ee7513/32.png) [@HarishRRao](https://discourse.slicer.org/u/HarishRRao)\
**Post date:** [January 12, 2018, 10:38pm UTC](https://discourse.slicer.org/t/converting-volume-to-segment/1826/4 "2018-01-12T22:38:21Z")

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I think you could use the **Export/import models and labelmaps** section in the **Segmentations** module to convert a model into a segment again. I have posted a screenshot when I tried this feature:

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/e/3ede57fbe5326bda9776a6b81e4784cd5a0ba3e8.png)

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**Author:** ![tnguyen](https://avatars.discourse-cdn.com/v4/letter/t/6f9a4e/32.png) [@tnguyen](https://discourse.slicer.org/u/tnguyen)\
**Post date:** [January 13, 2018, 1:46am UTC](https://discourse.slicer.org/t/converting-volume-to-segment/1826/5 "2018-01-13T01:46:19Z")

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It works!! Thanks so much everyone for helping me!