# Spinal cord not being masked out

**URL:** <https://discourse.slicer.org/t/spinal-cord-not-being-masked-out/3884>\
**Category:** SlicerDMRI\
**Created:** [August 24, 2018, 2:13pm UTC](https://discourse.slicer.org/t/spinal-cord-not-being-masked-out/3884 "2018-08-24T14:13:53Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![ihnorton](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ihnorton/32/9_2.png) [@ihnorton](https://discourse.slicer.org/u/ihnorton)\
**Post date:** [August 25, 2018, 5:51pm UTC](https://discourse.slicer.org/t/spinal-cord-not-being-masked-out/3884/6 "2018-08-25T17:51:38Z")

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> Where can I find instructions on how to do this?

[https://slicer.readthedocs.io/en/latest/user\_guide/module\_segmenteditor.html](https://slicer.readthedocs.io/en/latest/user_guide/module_segmenteditor.html)

and

[https://www.slicer.org/wiki/Documentation/Nightly/Training#Slicer4\_Image\_Segmentation](https://www.slicer.org/wiki/Documentation/Nightly/Training#Slicer4_Image_Segmentation)

Specifically, for the task @ljod mentioned, you can use the scissors tool to quickly clear all of the unwanted label region with a cut in one slice. For example:

 ![2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/8/38b1b4d8e93c407a2de323f7c31ee95356a814bf.gif)

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