# Is it possible to use a box/circle for region on interest segmentation on CT-scans?

**URL:** <https://discourse.slicer.org/t/is-it-possible-to-use-a-box-circle-for-region-on-interest-segmentation-on-ct-scans/27167>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [January 10, 2023, 3:47pm UTC](https://discourse.slicer.org/t/is-it-possible-to-use-a-box-circle-for-region-on-interest-segmentation-on-ct-scans/27167 "2023-01-10T15:47:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![a.mohseni](https://avatars.discourse-cdn.com/v4/letter/a/f1d935/32.png) [@a.mohseni](https://discourse.slicer.org/u/a.mohseni)\
**Post date:** [January 10, 2023, 3:47pm UTC](https://discourse.slicer.org/t/is-it-possible-to-use-a-box-circle-for-region-on-interest-segmentation-on-ct-scans/27167/1 "2023-01-10T15:47:15Z")

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So basically what I want to do is using a box or region of interest (in 3 different views) to encapsulate a part of the liver/spleen that I want to be segmentated. I tried using the segment editor, but I can’t find the functionality i’m looking for.

Is there also a way to convert a DICOM to a NIFTI file format?

Thanks in advance!

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**Author:** ![labakoum\_badr-eddine](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/labakoum_badr-eddine/32/17958_2.png) [@labakoum\_badr-eddine](https://discourse.slicer.org/u/labakoum_badr-eddine)\
**Post date:** [January 10, 2023, 4:02pm UTC](https://discourse.slicer.org/t/is-it-possible-to-use-a-box-circle-for-region-on-interest-segmentation-on-ct-scans/27167/2 "2023-01-10T16:02:19Z")

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yes I have the same problem to add a feature or a model, then I have a little idea to locate the part you want to segment through the tool CROP VOLUME and to convert DCIM to NIFTI format you can use free online converter

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**Author:** ![a.mohseni](https://avatars.discourse-cdn.com/v4/letter/a/f1d935/32.png) [@a.mohseni](https://discourse.slicer.org/u/a.mohseni)\
**Post date:** [January 10, 2023, 4:16pm UTC](https://discourse.slicer.org/t/is-it-possible-to-use-a-box-circle-for-region-on-interest-segmentation-on-ct-scans/27167/3 "2023-01-10T16:16:41Z")

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Is there a way that I can use volume rendering to annotate or segment the box that it creates?

So with volume rendering I’m achieving what I want in terms focussing on the region that i want to be segmented/masked and export as a NIFTI file.

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**Author:** ![labakoum\_badr-eddine](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/labakoum_badr-eddine/32/17958_2.png) [@labakoum\_badr-eddine](https://discourse.slicer.org/u/labakoum_badr-eddine)\
**Post date:** [January 10, 2023, 5:34pm UTC](https://discourse.slicer.org/t/is-it-possible-to-use-a-box-circle-for-region-on-interest-segmentation-on-ct-scans/27167/4 "2023-01-10T17:34:23Z")

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I’ve already tried to do, I don’t think there’s any way to do this  
volume rendering it only gives you a vision on the segmentation in 3D form