# How to export volume rendering from slicer to Hololens 2

**URL:** <https://discourse.slicer.org/t/how-to-export-volume-rendering-from-slicer-to-hololens-2/28592>\
**Category:** Support\
**Tags:** segmentation, volume-rendering\
**Created:** [March 27, 2023, 9:03am UTC](https://discourse.slicer.org/t/how-to-export-volume-rendering-from-slicer-to-hololens-2/28592 "2023-03-27T09:03:10Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Caterina](https://avatars.discourse-cdn.com/v4/letter/c/439d5e/32.png) [@Caterina](https://discourse.slicer.org/u/Caterina)\
**Post date:** [March 27, 2023, 9:03am UTC](https://discourse.slicer.org/t/how-to-export-volume-rendering-from-slicer-to-hololens-2/28592/1 "2023-03-27T09:03:10Z")

</div>

Good morning,  
I need to export volume rendering from 3d slicer in a format that is compatible with Hololens 2 (stl or obj).  
For example, in the screenshot in attach, I can visualize the segmentation (trachea) and the volume rendering (lung). From 3d slicer I can export only the segmentation as stl or obj. Can I also export the volume rendering to visualize it on Hololens 2?  
Thanks

 ![Schermata 2023-03-27 alle 11.00.58](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/9/f9e64ca12f33ff35b9f7f74400047f30b102191f.jpeg)

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [March 27, 2023, 3:34pm UTC](https://discourse.slicer.org/t/how-to-export-volume-rendering-from-slicer-to-hololens-2/28592/2 "2023-03-27T15:34:44Z")

</div>

It is not possible to export volume rendering (a rendering technique) into a mesh file format. See more details here:

> [@Save volume rendering as STL file](https://discourse.slicer.org/t/save-volume-rendering-as-stl-file/524):
>
> Hello, I am a new user on 3D slicer. I was using the display preset feature under volume rendering, and I was wondering if there is a way to save what I was viewing as an .stl or 3D printable file. For example, I was viewing a sample MRI using the CT-cardiac3 preset display. When I tried to save that specific 3D preset displayed sample in a .stl file, the option was unavailable. I was only able to see .vp (volume property), .txt formats. Is there a way to accomplish what I desire in 3D slic…

---

<div class="post-metadata">

**Author:** ![LucasGandel](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lucasgandel/32/18202_2.png) [@LucasGandel](https://discourse.slicer.org/u/LucasGandel)\
**Post date:** [March 28, 2023, 11:41am UTC](https://discourse.slicer.org/t/how-to-export-volume-rendering-from-slicer-to-hololens-2/28592/3 "2023-03-28T11:41:56Z")

</div>

For now, an option could be to have a separate VTK-based app to visualize the exported data from 3D Slicer. VTK supports volume rendering inside the Hololens 2 (see [here](https://www.kitware.com/stream-vtk-to-the-hololens-2/)).

---

<div class="post-metadata">

**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [March 28, 2023, 7:06pm UTC](https://discourse.slicer.org/t/how-to-export-volume-rendering-from-slicer-to-hololens-2/28592/4 "2023-03-28T19:06:30Z")

</div>

Nice demos. Thanks Lucas