# Can’t visualize my liver segmentation in 3D after cropping (Scalar Range shows 0–2 but nothing displays)

**URL:** <https://discourse.slicer.org/t/can-t-visualize-my-liver-segmentation-in-3d-after-cropping-scalar-range-shows-0-2-but-nothing-displays/44355>\
**Category:** Support\
**Tags:** registration, segmentation, 3d-model\
**Created:** [September 5, 2025, 9:44am UTC](https://discourse.slicer.org/t/can-t-visualize-my-liver-segmentation-in-3d-after-cropping-scalar-range-shows-0-2-but-nothing-displays/44355 "2025-09-05T09:44:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![era\_888](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/era_888/32/80747_2.png) [@era\_888](https://discourse.slicer.org/u/era_888)\
**Post date:** [September 5, 2025, 9:44am UTC](https://discourse.slicer.org/t/can-t-visualize-my-liver-segmentation-in-3d-after-cropping-scalar-range-shows-0-2-but-nothing-displays/44355/1 "2025-09-05T09:44:43Z")

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Hello everyone.  
I am working on a liver surgery simulation project. I have:

- Pre-operative MRI resampled to isotropic (`preop_n4_iso`)

- Liver segmentation exported as labelmap (`liver_full_seg`)

What I did:

1. Resampled the segmentation with **NearestNeighbor** using `preop_n4_iso` as reference → got `liver_full_seg_iso`

2. Cropped MRI (`preop_n4_iso_crop`, Linear) and mask (`liver_full_seg_iso_crop`, NearestNeighbor) with the same ROI

3. In **Volumes → Information** :

4. When I **Import labelmap to Segmentation** , I get Segment\_1 and Segment\_2, but neither looks like the full liver in 2D or 3D. ( There is no 3D liver at all is just showing a small thing

5. Clicking **Show 3D** shows nothing

My question:

- Why doesn’t the liver appear in 3D even though Scalar Range = 0–2?

- Did I crop incorrectly, or is my export wrong?

- Should I re-export my liver segmentation as a binary (0/1) labelmap before resampling/cropping?

I have attached screenshots showing the Volumes Information panel and the empty 3D view.

Any help to understand what I am doing wrong would be greatly appreciated, because Ive been doing the same things for more than 3 days and cannot find the solution.

Thank you!

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<div class="post-metadata">

**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:** [September 5, 2025, 10:34am UTC](https://discourse.slicer.org/t/can-t-visualize-my-liver-segmentation-in-3d-after-cropping-scalar-range-shows-0-2-but-nothing-displays/44355/2 "2025-09-05T10:34:36Z")

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To facilitate the process I suggest that you at the least make some relevant screenshots, but if the issue can be reproduced with a saved MRB scene, even better (only anonymized data please). Thank you!