# Breaking up 3D volume segmentation

**URL:** <https://discourse.slicer.org/t/breaking-up-3d-volume-segmentation/15700>\
**Category:** Support\
**Tags:** segmentation, radiomics\
**Created:** [January 27, 2021, 7:54pm UTC](https://discourse.slicer.org/t/breaking-up-3d-volume-segmentation/15700 "2021-01-27T19:54:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![lekremer](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lekremer/32/9145_2.png) [@lekremer](https://discourse.slicer.org/u/lekremer)\
**Post date:** [January 27, 2021, 7:54pm UTC](https://discourse.slicer.org/t/breaking-up-3d-volume-segmentation/15700/1 "2021-01-27T19:54:07Z")

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I have segmented a full kidney under one segmentation. I want to run texture on just 1 slice of the volume. When I run pyradiomics, it computes texture of the full 3D volume of the kidney.

How do a breakup a segmentation into individual segmentations it is composed of?

I have tried the copy in the logical operators of the segment editor, but it copies all of the segmentations and not just the one I want.

best

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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 27, 2021, 8:52pm UTC](https://discourse.slicer.org/t/breaking-up-3d-volume-segmentation/15700/2 "2021-01-27T20:52:11Z")

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You can use Crop volume module to crop the volume to a single slice. If you need the segmentation to be single-slice volume, too, then you can export it to a labelmap volume, choosing the cropped volume node as reference geometry.

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**Author:** ![lekremer](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lekremer/32/9145_2.png) [@lekremer](https://discourse.slicer.org/u/lekremer)\
**Post date:** [January 28, 2021, 3:34pm UTC](https://discourse.slicer.org/t/breaking-up-3d-volume-segmentation/15700/3 "2021-01-28T15:34:53Z")

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thank you. I have been using the crop volume module but it still is giving my the entire series of MR images. I just want to work with selected single slice/image.

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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 28, 2021, 4:13pm UTC](https://discourse.slicer.org/t/breaking-up-3d-volume-segmentation/15700/4 "2021-01-28T16:13:15Z")

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You need to edit the ROI to include only a single slice and then click Apply.