# how to save the outline of tumor in a new segmentation

**URL:** <https://discourse.slicer.org/t/how-to-save-the-outline-of-tumor-in-a-new-segmentation/20843>\
**Category:** Support\
**Created:** [November 30, 2021, 1:45pm UTC](https://discourse.slicer.org/t/how-to-save-the-outline-of-tumor-in-a-new-segmentation/20843 "2021-11-30T13:45:09Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![LIE\_CAI](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lie_cai/32/13293_2.png) [@LIE\_CAI](https://discourse.slicer.org/u/LIE_CAI)\
**Post date:** [November 30, 2021, 1:45pm UTC](https://discourse.slicer.org/t/how-to-save-the-outline-of-tumor-in-a-new-segmentation/20843/1 "2021-11-30T13:45:09Z")

</div>

I know that using the function “hollow” could create the outline of the targeted objects.  
I don’t want to delete the object’s segmentation but want to save the outline and the objects in different segmentations separately. How to operate it?  
Thanks a lot!

---

<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 30, 2021, 1:53pm UTC](https://discourse.slicer.org/t/how-to-save-the-outline-of-tumor-in-a-new-segmentation/20843/2 "2021-11-30T13:53:08Z")

</div>

I’d suggest making a copy of the segment and doing the Hollow operation on that.

---

<div class="post-metadata">

**Author:** ![LIE\_CAI](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lie_cai/32/13293_2.png) [@LIE\_CAI](https://discourse.slicer.org/u/LIE_CAI)\
**Post date:** [November 30, 2021, 2:41pm UTC](https://discourse.slicer.org/t/how-to-save-the-outline-of-tumor-in-a-new-segmentation/20843/3 "2021-11-30T14:41:13Z")

</div>

Thanks, I wonder if there’s a solution that could show the outline and the targeted subject at the same time.

---

<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 30, 2021, 2:43pm UTC](https://discourse.slicer.org/t/how-to-save-the-outline-of-tumor-in-a-new-segmentation/20843/4 "2021-11-30T14:43:36Z")

</div>

They will show at the same time. Typically Slicer highlights the outline as part of the rendering process, which you control with the display options. But if you make a new segment or segmentation by copying they should show at the same time and you can operate on them independently.

---

<div class="post-metadata">

**Author:** ![LIE\_CAI](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lie_cai/32/13293_2.png) [@LIE\_CAI](https://discourse.slicer.org/u/LIE_CAI)\
**Post date:** [November 30, 2021, 2:51pm UTC](https://discourse.slicer.org/t/how-to-save-the-outline-of-tumor-in-a-new-segmentation/20843/5 "2021-11-30T14:51:18Z")

</div>

ha, I see, it works!  
Many thanks for your explanation! 🙂 😃