# Imported segmentation does not show on DICOM file image

**URL:** <https://discourse.slicer.org/t/imported-segmentation-does-not-show-on-dicom-file-image/42538>\
**Category:** Support\
**Tags:** dicom\
**Created:** [April 11, 2025, 5:20pm UTC](https://discourse.slicer.org/t/imported-segmentation-does-not-show-on-dicom-file-image/42538 "2025-04-11T17:20:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![maysan1](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@maysan1](https://discourse.slicer.org/u/maysan1)\
**Post date:** [April 11, 2025, 5:20pm UTC](https://discourse.slicer.org/t/imported-segmentation-does-not-show-on-dicom-file-image/42538/1 "2025-04-11T17:20:08Z")

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Hello, I am using Slicer 5.9.0.  
I have created a segmentation on one dicom file of a certain volume. Then saved it as a seg.nrrd file. I am now trying to import it to another dicom file of another volume. It can be imported but does not show up on the image…  
I have tried to align the volume of the files by changing “image spacing” and “image origin” under “volumes”. This does not help.

How do I proceed?

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [April 15, 2025, 2:33pm UTC](https://discourse.slicer.org/t/imported-segmentation-does-not-show-on-dicom-file-image/42538/2 "2025-04-15T14:33:25Z")

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It is probably not enough to change the origin and spacing to register the segmentation to the new slice. Typically for registration we create a transform as parent of the object we need to align with the new data, and change the transform. You provided very little detail, but based on what I understand what I’d do is first to visualize both the new slice and the segmentation in 3D, and see the relationship between the two. Maybe before I delve into more assumptions you could do this and post a screenshot?