# prostatic manual segmentation and mask extraction

**URL:** <https://discourse.slicer.org/t/prostatic-manual-segmentation-and-mask-extraction/17131>\
**Category:** Support\
**Tags:** segmentation, mri, masking\
**Created:** [April 16, 2021, 1:26pm UTC](https://discourse.slicer.org/t/prostatic-manual-segmentation-and-mask-extraction/17131 "2021-04-16T13:26:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Marco\_Catinozzi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/marco_catinozzi/32/9640_2.png) [@Marco\_Catinozzi](https://discourse.slicer.org/u/Marco_Catinozzi)\
**Post date:** [April 16, 2021, 1:26pm UTC](https://discourse.slicer.org/t/prostatic-manual-segmentation-and-mask-extraction/17131/1 "2021-04-16T13:26:20Z")

</div>

Operating system: macOS Big Sur 11.2.3  
Slicer version: 4.11.20200930

Hallo folks! Need your help!  
I am working with a prostatic MRI data set, my boss is suggesting to extract a binary mask and to manually segment the prostate.  
He affirms I can outline 5/6 slices and then extract a mask without filling them and merge them. Is this true? Is there any way on 3D slicer?  
Thanks for the help!