# Why do horizontal lines appear after using Fill Between Slices in 3D Slicer?

**URL:** <https://discourse.slicer.org/t/why-do-horizontal-lines-appear-after-using-fill-between-slices-in-3d-slicer/33031>\
**Category:** Support\
**Created:** [November 26, 2023, 3:49am UTC](https://discourse.slicer.org/t/why-do-horizontal-lines-appear-after-using-fill-between-slices-in-3d-slicer/33031 "2023-11-26T03:49:08Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![tuwenqing](https://avatars.discourse-cdn.com/v4/letter/t/c4cdca/32.png) [@tuwenqing](https://discourse.slicer.org/u/tuwenqing)\
**Post date:** [November 26, 2023, 3:49am UTC](https://discourse.slicer.org/t/why-do-horizontal-lines-appear-after-using-fill-between-slices-in-3d-slicer/33031/1 "2023-11-26T03:49:08Z")

</div>

Operating system:windows  
Slicer version:5.4.0  
Expected behavior:there’s no horizontal lines  
Actual behavior:there’s horizontal lines appear after using Fill Between Slices in 3D Slicer  
 ![截屏2023-11-26 11.39.49](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/9/6990fd5dec37bece619354139363d9824bea9b70.png)

---

<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:** [November 27, 2023, 7:04am UTC](https://discourse.slicer.org/t/why-do-horizontal-lines-appear-after-using-fill-between-slices-in-3d-slicer/33031/2 "2023-11-27T07:04:01Z")

</div>

Fill between slices effect operates on along axes parallel with the axes of the segmentation’s internal labelmap representation. You can snap back the slice views axes to the segmentation axes; or if you want to see oblique slices then you can resample the volume. See some more explanation and step-by-step instructions here:

[https://slicer.readthedocs.io/en/latest/user\_guide/modules/segmenteditor.html#paint-affects-neighbor-slices-or-stripes-appear-in-painted-segments](https://slicer.readthedocs.io/en/latest/user_guide/modules/segmenteditor.html#paint-affects-neighbor-slices-or-stripes-appear-in-painted-segments)