# Lego artefact data/staircase artefact

**URL:** <https://discourse.slicer.org/t/lego-artefact-data-staircase-artefact/34475>\
**Category:** Support\
**Created:** [February 22, 2024, 3:03pm UTC](https://discourse.slicer.org/t/lego-artefact-data-staircase-artefact/34475 "2024-02-22T15:03:16Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![dr\_usman\_sani](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dr_usman_sani/32/67113_2.png) [@dr\_usman\_sani](https://discourse.slicer.org/u/dr_usman_sani)\
**Post date:** [February 22, 2024, 3:03pm UTC](https://discourse.slicer.org/t/lego-artefact-data-staircase-artefact/34475/1 "2024-02-22T15:03:16Z")

</div>

Problem report for Slicer 5.2.2 win-amd64: Hi I am having trouble as soon as i put data in the 4view screen it show one data is smooth while others have leggo shaped margins and inner content .here is a snap shot of what I am experiencing.

 ![Screenshot](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/2/92a66c630546a769a7f4fe7993bbbabc27e3b5d2.png)

---

<div class="post-metadata">

**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 22, 2024, 4:48pm UTC](https://discourse.slicer.org/t/lego-artefact-data-staircase-artefact/34475/2 "2024-02-22T16:48:18Z")

</div>

This means you have an order of magnitude less resolution in Z dimension, very typical in medical imaging. You can use CropVolume and choose to “isotropic” option to resample the image to get rid off this artifact.

---

<div class="post-metadata">

**Author:** ![dr\_usman\_sani](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dr_usman_sani/32/67113_2.png) [@dr\_usman\_sani](https://discourse.slicer.org/u/dr_usman_sani)\
**Post date:** [February 23, 2024, 4:12am UTC](https://discourse.slicer.org/t/lego-artefact-data-staircase-artefact/34475/3 "2024-02-23T04:12:54Z")

</div>

Thank you Muratmaga for your guidance I will check and will let you know if I can get better resolution.

---

<div class="post-metadata">

**Author:** ![dr\_usman\_sani](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dr_usman_sani/32/67113_2.png) [@dr\_usman\_sani](https://discourse.slicer.org/u/dr_usman_sani)\
**Post date:** [February 24, 2024, 6:16am UTC](https://discourse.slicer.org/t/lego-artefact-data-staircase-artefact/34475/4 "2024-02-24T06:16:17Z")

</div>

![SceneView](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/9/3919a7b5301881226b0984e729d9c7a00fe14853.jpeg)  
its not getting any better

---

<div class="post-metadata">

**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:** [February 24, 2024, 3:26pm UTC](https://discourse.slicer.org/t/lego-artefact-data-staircase-artefact/34475/5 "2024-02-24T15:26:45Z")

</div>

If you have already created a low-resolution segment then you need to smooth it or segment it again. See detailed instructions [here](https://slicer.readthedocs.io/en/latest/user_guide/modules/segmenteditor.html#segmentation-is-not-accurate-enough).