# Segment Not working

**URL:** <https://discourse.slicer.org/t/segment-not-working/47659>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [July 17, 2026, 3:25pm UTC](https://discourse.slicer.org/t/segment-not-working/47659 "2026-07-17T15:25:39Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Reza\_ashtiani](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/reza_ashtiani/32/82602_2.png) [@Reza\_ashtiani](https://discourse.slicer.org/u/Reza_ashtiani)\
**Post date:** [July 17, 2026, 3:25pm UTC](https://discourse.slicer.org/t/segment-not-working/47659/1 "2026-07-17T15:25:39Z")

</div>

Dear friends

I am new on program.

When I want to segment my CBCT, it simply doesn’t work.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/b/1b017420954c6da53a4a004ed813302944f92dd2.jpeg)

I’m using CUDA. The first step — loading the DICOM file — works fine, but the dental segmentation process doesn’t proceed beyond that point.

Need you idea and helps

Best

Reza