# Importing a segmentation onto a cropped volume

**URL:** <https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100>\
**Category:** Support\
**Tags:** segmentation, volume\
**Created:** [September 21, 2017, 7:55pm UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100 "2017-09-21T19:55:59Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![stevenagl12](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/stevenagl12/32/3391_2.png) [@stevenagl12](https://discourse.slicer.org/u/stevenagl12)\
**Post date:** [September 21, 2017, 7:55pm UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100/1 "2017-09-21T19:55:59Z")

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I have a cropped volume that I am trying to import the segmentation I performed on the main volume to. Is there an easy way to do this without registration?

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**Author:** ![stevenagl12](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/stevenagl12/32/3391_2.png) [@stevenagl12](https://discourse.slicer.org/u/stevenagl12)\
**Post date:** [September 21, 2017, 8:16pm UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100/2 "2017-09-21T20:16:29Z")

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Never mind, I figured out a way.

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**Author:** ![Wayne](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/wayne/32/18294_2.png) [@Wayne](https://discourse.slicer.org/u/Wayne)\
**Post date:** [February 5, 2023, 2:07pm UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100/3 "2023-02-05T14:07:23Z")

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Is any one can tell me how to do this import? I have the same problem, but I don’t know how to do. Thanks a lot.

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**Author:** ![Wayne](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/wayne/32/18294_2.png) [@Wayne](https://discourse.slicer.org/u/Wayne)\
**Post date:** [February 5, 2023, 2:13pm UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100/4 "2023-02-05T14:13:11Z")

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Or is there any way to corp a segmentation with a ROI?

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [February 5, 2023, 3:28pm UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100/5 "2023-02-05T15:28:10Z")

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Sure you can crop a segmentation. Just load it as a volume instead of segmentation and use the Crop Volume module.

However, I am not sure why you need to crop it? If you cropped your original volume within Slicer things should still continue to line up correctly…

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**Author:** ![Wayne](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/wayne/32/18294_2.png) [@Wayne](https://discourse.slicer.org/u/Wayne)\
**Post date:** [February 6, 2023, 4:14am UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100/7 "2023-02-06T04:14:15Z")

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I used your method to crop the volume and the segmentation with one ROI. But, the cropped segmentation cannot fit the cropped volume. Do you have another method to resolve my problem?

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**Author:** ![Wayne](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/wayne/32/18294_2.png) [@Wayne](https://discourse.slicer.org/u/Wayne)\
**Post date:** [February 6, 2023, 1:34pm UTC](https://discourse.slicer.org/t/importing-a-segmentation-onto-a-cropped-volume/1100/8 "2023-02-06T13:34:47Z")

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I have a volume of about 1.8 GB. I have creat a segmentation on it (about 900 MB), it cost me about one week. Now, I want to modify part of the segmentation. However, I found in the Segmentation Editor, each paint cost about 5 seconds. If I corp the volume that I interested in. The cropped volume will be 400 MB, and the new segmentation created on it will be 200 MB. Each paint will cost only 1 second. However, I must spend one more week to recreate all segmentations on the new segmentation. So, I want to know if there is a way to corp both the volume and old segmentation. And modify all segmentations based on the cropped volume and cropped segmentation.