# seperating skin of the hand from the bed of the ct scan machine. 

**URL:** <https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [January 13, 2019, 2:14pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355 "2019-01-13T14:14:45Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![denzil\_dsouza](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@denzil\_dsouza](https://discourse.slicer.org/u/denzil_dsouza)\
**Post date:** [January 13, 2019, 2:14pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/1 "2019-01-13T14:14:45Z")

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Operating system:windows  
Slicer version:4.10  
Expected behavior: only want outside surface of the skin without any foreign objects.  
Actual behavior: skin and the bed is showing as the same surface

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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:** [January 13, 2019, 2:33pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/2 "2019-01-13T14:33:50Z")

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If the skin and bed are not connected then you can use Islands effect / Split operation to separate them. If you just want to remove the table then you can use Scissors tool to delete it.

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**Author:** ![denzil\_dsouza](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@denzil\_dsouza](https://discourse.slicer.org/u/denzil_dsouza)\
**Post date:** [January 13, 2019, 3:15pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/3 "2019-01-13T15:15:53Z")

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thankyou for the valuable feedback but its connected and scissor operation doesnt give better results

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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:** [January 13, 2019, 6:08pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/4 "2019-01-13T18:08:58Z")

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We use the described methods often and they work well. We can give more specific instructions if you tell what you do exactly, what do you expext to happen, and what happens instead. If possible, attach screenshots, they often better explain the issue than words.

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**Author:** ![denzil\_dsouza](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@denzil\_dsouza](https://discourse.slicer.org/u/denzil_dsouza)\
**Post date:** [January 15, 2019, 11:55am UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/5 "2019-01-15T11:55:36Z")

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![IMG_20190115_172041](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/9/496af1cf3244c6e28f7f1c416dbac777b5a71088.jpeg) ![IMG_20190115_172120](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/f/ef8dd0c236b7804ac173def46e3e6b491992c672.jpeg)

i want to remove this bedsheet which is very close to the hand.

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<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:** [January 15, 2019, 12:56pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/6 "2019-01-15T12:56:25Z")

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See how to blank out regions of a volume using _Scissors_ and _Volume masking_ effects in this video:

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<div class="post-metadata">

**Author:** ![denzil\_dsouza](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@denzil\_dsouza](https://discourse.slicer.org/u/denzil_dsouza)\
**Post date:** [January 15, 2019, 1:00pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/7 "2019-01-15T13:00:24Z")

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thanks for the video i will try this out. the only concern is the part outside the hand skin

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<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:** [January 15, 2019, 1:02pm UTC](https://discourse.slicer.org/t/seperating-skin-of-the-hand-from-the-bed-of-the-ct-scan-machine/5355/8 "2019-01-15T13:02:24Z")

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You can rotate the 3D view and remove the cloth piece by piece, zooming in very closely when they get very close.

It is also often possible to make the cloth disappear by choosing a different offset in _Volume rendering_ module or a different threshold in _Segment editor_ module.