# Straight long gaps when segmenting

**URL:** <https://discourse.slicer.org/t/straight-long-gaps-when-segmenting/25758>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [October 18, 2022, 3:34pm UTC](https://discourse.slicer.org/t/straight-long-gaps-when-segmenting/25758 "2022-10-18T15:34:55Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![vvalle](https://avatars.discourse-cdn.com/v4/letter/v/ee7513/32.png) [@vvalle](https://discourse.slicer.org/u/vvalle)\
**Post date:** [October 18, 2022, 3:34pm UTC](https://discourse.slicer.org/t/straight-long-gaps-when-segmenting/25758/1 "2022-10-18T15:34:55Z")

</div>

![Draw1](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/0/508500cd8eb9bde2f633156efee489684d3290e5.jpeg)

When I use the ‘draw’ function in Segment Editor, sometimes these long gaps occur (see picture). Does anyone know why and how to correct this?

Thanks for any advice!

Best,  
Vanessa

---

<div class="post-metadata">

**Author:** ![hherhold](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/hherhold/32/12199_2.png) [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Post date:** [October 18, 2022, 3:42pm UTC](https://discourse.slicer.org/t/straight-long-gaps-when-segmenting/25758/2 "2022-10-18T15:42:08Z")

</div>

Have you rotated your slice views from Axial, Saggital, Coronal?

---

<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:** [October 18, 2022, 3:55pm UTC](https://discourse.slicer.org/t/straight-long-gaps-when-segmenting/25758/3 "2022-10-18T15:55:16Z")

</div>

See [here](https://lassoan.github.io/SlicerSegmentationRecipes/ObliqueSliceSegmentation/) explanation of why you see the stripes when your slice views are not aligned with segmentation axes and what to do about it.

---

<div class="post-metadata">

**Author:** ![vvalle](https://avatars.discourse-cdn.com/v4/letter/v/ee7513/32.png) [@vvalle](https://discourse.slicer.org/u/vvalle)\
**Post date:** [October 19, 2022, 9:23am UTC](https://discourse.slicer.org/t/straight-long-gaps-when-segmenting/25758/4 "2022-10-19T09:23:24Z")

</div>

Thank you very much for the explanation. Now I understand it.

Best,  
Vanessa