# How to contour an organ with 3DSlicer without using RTSTRUCT from TPS?

**URL:** <https://discourse.slicer.org/t/how-to-contour-an-organ-with-3dslicer-without-using-rtstruct-from-tps/6335>\
**Category:** Support\
**Created:** [March 30, 2019, 7:27am UTC](https://discourse.slicer.org/t/how-to-contour-an-organ-with-3dslicer-without-using-rtstruct-from-tps/6335 "2019-03-30T07:27:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MeryMB](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/32.png) [@MeryMB](https://discourse.slicer.org/u/MeryMB)\
**Post date:** [March 30, 2019, 7:27am UTC](https://discourse.slicer.org/t/how-to-contour-an-organ-with-3dslicer-without-using-rtstruct-from-tps/6335/1 "2019-03-30T07:27:39Z")

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Hi Dear 3DSlicer’s developers and users

I want to contour an organ manually with 3DSlicer? Produce RTSTRUCT with 3D Slicer! Is it possible or I have to do it in TPS and import it?

Best  
Mery

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<div class="post-metadata">

**Author:** ![gcsharp](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/gcsharp/32/863_2.png) [@gcsharp](https://discourse.slicer.org/u/gcsharp)\
**Post date:** [March 30, 2019, 4:27pm UTC](https://discourse.slicer.org/t/how-to-contour-an-organ-with-3dslicer-without-using-rtstruct-from-tps/6335/2 "2019-03-30T16:27:48Z")

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Absolutely it is possible. There are tutorials on using the segment editor here:

[https://www.slicer.org/wiki/Documentation/Nightly/Training](https://www.slicer.org/wiki/Documentation/Nightly/Training)

If you want to export RTSTRUCT, you also need to install the SlicerRT extension.