# Extract region from a model by having another model

**URL:** <https://discourse.slicer.org/t/extract-region-from-a-model-by-having-another-model/15145>\
**Category:** Support\
**Created:** [December 19, 2020, 11:53am UTC](https://discourse.slicer.org/t/extract-region-from-a-model-by-having-another-model/15145 "2020-12-19T11:53:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![shahrokh](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/shahrokh/32/1499_2.png) [@shahrokh](https://discourse.slicer.org/u/shahrokh)\
**Post date:** [December 19, 2020, 11:53am UTC](https://discourse.slicer.org/t/extract-region-from-a-model-by-having-another-model/15145/1 "2020-12-19T11:53:59Z")

</div>

Hello Dear Developers and Users

In the following figure, I want to extract a part of the model, with the name of _wholeLungVesselParticles_, that is inside the spherical model, with the name of _ROI_, and remove regions of this tree model that are outside this spherical model.

 ![tttt](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/5/e58509208d520a02ba270cbabff9031d27fb8ea2.png)

Please guide me.  
Shahrokh