# Monai auto 3D seg : Separating arteries and veins for lungs

**URL:** <https://discourse.slicer.org/t/monai-auto-3d-seg-separating-arteries-and-veins-for-lungs/39925>\
**Category:** Support\
**Created:** [October 29, 2024, 4:32pm UTC](https://discourse.slicer.org/t/monai-auto-3d-seg-separating-arteries-and-veins-for-lungs/39925 "2024-10-29T16:32:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Vir](https://avatars.discourse-cdn.com/v4/letter/v/9d8465/32.png) [@Vir](https://discourse.slicer.org/u/Vir)\
**Post date:** [October 29, 2024, 4:32pm UTC](https://discourse.slicer.org/t/monai-auto-3d-seg-separating-arteries-and-veins-for-lungs/39925/1 "2024-10-29T16:32:29Z")

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Good Morning  
I have a question regarding Monai auto 3D seg for lungs. I want to separate pulmonary arteries and veins and from my understanding, currently it cannot be done using Monai auto 3D seg.  
However, when I run the Monai 3D seg on 3D slicer and only select pulmonary vessel (red) and pulmonary artery (blue) I am getting this.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/2/c/2c918c5ccd931fff14676ded3fb98496d9ac5d18.jpeg)  
Isn’t pulmonary artery (blue) = pulmonary arteries? or am I misinterpreting something.

thank you in advance