# How to do and negative brain segmentation

**URL:** <https://discourse.slicer.org/t/how-to-do-and-negative-brain-segmentation/40366>\
**Category:** Support\
**Tags:** segmentation, brain, segmentations, segment-editor\
**Created:** [November 25, 2024, 2:27pm UTC](https://discourse.slicer.org/t/how-to-do-and-negative-brain-segmentation/40366 "2024-11-25T14:27:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Victor\_Hugo\_Figueire](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/victor_hugo_figueire/32/77763_2.png) [@Victor\_Hugo\_Figueire](https://discourse.slicer.org/u/Victor_Hugo_Figueire)\
**Post date:** [November 25, 2024, 2:27pm UTC](https://discourse.slicer.org/t/how-to-do-and-negative-brain-segmentation/40366/1 "2024-11-25T14:27:24Z")

</div>

Hello!,  
I am trying to find and easy way to do this structure : a block with the brain volume on negative , similar to this article approach .

> **[Development of a CT-Compatible, Anthropomorphic Skull and Brain Phantom for...](https://pmc.ncbi.nlm.nih.gov/articles/PMC9598361/)**
>
> Background: Neurosurgical procedures are complex and require years of training and experience. Traditional training on human cadavers is expensive, requires facilities and planning, and raises ethical concerns. Therefore, the use of anthropomorphic...

 ![bioengineering-09-00537-g003](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/6/66961d88086d8f72a1961c331bc18d10560169ab.jpeg)