# Segmentation leaves empty vertical lines

**URL:** <https://discourse.slicer.org/t/segmentation-leaves-empty-vertical-lines/2319>\
**Category:** Support\
**Created:** [March 14, 2018, 6:23pm UTC](https://discourse.slicer.org/t/segmentation-leaves-empty-vertical-lines/2319 "2018-03-14T18:23:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [March 14, 2018, 7:34pm UTC](https://discourse.slicer.org/t/segmentation-leaves-empty-vertical-lines/2319/2 "2018-03-14T19:34:13Z")

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Have a look at this topic, it should solve this for you:

> [@Segmentation Editor - How to disable painting on adjacent slices?](https://discourse.slicer.org/t/segmentation-editor-how-to-disable-painting-on-adjacent-slices/1459):
>
> I am working on a project where we are segmenting lesions from an MRI using the paint tool from the Segment Editor module. We are using a large brush size along with a threshold so only pixels within a certain range are included in the segmentation. My problem is that I want the segmentation to be only in 2d (i.e. just affecting the pixels on the current slice of the volume). For example, if I do a threshold paint on slice 10 of the MRI, I don’t want it to paint any of the pixels on slice 9 or …

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_[View the full topic](https://discourse.slicer.org/t/segmentation-leaves-empty-vertical-lines/2319)._