# creating surface mapping

**URL:** <https://discourse.slicer.org/t/creating-surface-mapping/3816>\
**Category:** Support\
**Created:** [August 17, 2018, 5:14pm UTC](https://discourse.slicer.org/t/creating-surface-mapping/3816 "2018-08-17T17:14:55Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Tareq\_Aro](https://avatars.discourse-cdn.com/v4/letter/t/e99b99/32.png) [@Tareq\_Aro](https://discourse.slicer.org/u/Tareq_Aro)\
**Post date:** [August 17, 2018, 5:14pm UTC](https://discourse.slicer.org/t/creating-surface-mapping/3816/1 "2018-08-17T17:14:55Z")

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I have volume Ultrasound data and I am able to reconstruct object volume from it.  
Is there a way to reconstruct surface mapping using the software? as in to see only the first layer of the desired object creating a continuous surface?

thank you

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**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:** [August 17, 2018, 9:15pm UTC](https://discourse.slicer.org/t/creating-surface-mapping/3816/2 "2018-08-17T21:15:35Z")

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You mean like a segmentation? See: [https://slicer.readthedocs.io/en/latest/user\_guide/module\_segmenteditor.html](https://slicer.readthedocs.io/en/latest/user_guide/module_segmenteditor.html)

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**Author:** ![Tareq\_Aro](https://avatars.discourse-cdn.com/v4/letter/t/e99b99/32.png) [@Tareq\_Aro](https://discourse.slicer.org/u/Tareq_Aro)\
**Post date:** [August 20, 2018, 6:40pm UTC](https://discourse.slicer.org/t/creating-surface-mapping/3816/3 "2018-08-20T18:40:35Z")

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thank you for your reply.

i basically need to do surface rendering but for the inside of a hollow viscus…

I am looking at kidney or a urinary bladder with my ultrasound images - and I would like to make a rendering of the interior surface of the structure and not the exterior one - how can i do that?

thank you

tareq

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**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:** [August 20, 2018, 7:08pm UTC](https://discourse.slicer.org/t/creating-surface-mapping/3816/4 "2018-08-20T19:08:40Z")

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To see the internal surface of a model or segmentation you have several options:

- Simplest: go inside - center the 3D view and zoom in until you get inside (for models, make sure you set Visible sides: all).
- If input is segmentation node: make it hollow using Hollow effect in Segment editor, and then cut it using scissors or erase effect.
- If input is model node: clip it using Models module and move slice views.

You can use any of the methods for any input by converting between model\<-\>segmentation node using Segmentations module (Import/Export section).