# Mandibular nerve canal

**URL:** <https://discourse.slicer.org/t/mandibular-nerve-canal/19215>\
**Category:** Support\
**Tags:** dicom\
**Created:** [August 16, 2021, 6:37pm UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215 "2021-08-16T18:37:30Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Fatih\_Hamircu](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fatih_hamircu/32/12000_2.png) [@Fatih\_Hamircu](https://discourse.slicer.org/u/Fatih_Hamircu)\
**Post date:** [August 16, 2021, 6:37pm UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215/1 "2021-08-16T18:37:30Z")

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I have dicom from the entire skull. I segmented the lower jaw from this. What I’m trying to do now: expose the lower jaw nerve canal. How can I do that?  
I found no video nor Tutorial.

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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 16, 2021, 9:15pm UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215/2 "2021-08-16T21:15:23Z")

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We have video tutorial and also discussed this topic a few times on this forum.

Check out this video tutorial and let us know if you have any questions:

[![](https://img.youtube.com/vi/ijP3Etp7Jfc/maxresdefault.jpg "Nerve canal annotation on dental CBCT") ](https://www.youtube.com/watch?v=ijP3Etp7Jfc)

How did you try to find tutorials?

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<div class="post-metadata">

**Author:** ![Fatih\_Hamircu](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fatih_hamircu/32/12000_2.png) [@Fatih\_Hamircu](https://discourse.slicer.org/u/Fatih_Hamircu)\
**Post date:** [August 17, 2021, 3:44pm UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215/3 "2021-08-17T15:44:46Z")

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![16292149786413445782060141005884](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/0/3001d144a7499718c6f859e5a5b09eeb5feffb63.jpeg)

All the nerves are connected. How can I find out, all of it?

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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 17, 2021, 5:51pm UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215/4 "2021-08-17T17:51:18Z")

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What is your end goal? Surgical planning or building an anatomical atlas?

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**Author:** ![mohammed\_alshakhas](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mohammed_alshakhas/32/10025_2.png) [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Post date:** [August 17, 2021, 7:50pm UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215/5 "2021-08-17T19:50:20Z")

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this is so good im upset i wasted so much time.

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**Author:** ![Fatih\_Hamircu](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fatih_hamircu/32/12000_2.png) [@Fatih\_Hamircu](https://discourse.slicer.org/u/Fatih_Hamircu)\
**Post date:** [August 22, 2021, 10:55am UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215/6 "2021-08-22T10:55:15Z")

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In video, says that click on ctrl + alt and mouse click. I did but nothing happened, what’s wrong.

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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:** [August 23, 2021, 12:43am UTC](https://discourse.slicer.org/t/mandibular-nerve-canal/19215/7 "2021-08-23T00:43:18Z")

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The shortcut is Control + Alt + Left-click-and drag. You do not just click (depress and release) rh button, but hold down the mouse button while you move the pointer.

You also need to make sure slice intersections are displayed (without seeing the slice intersections you cannot rotate them).

On Mac keyboards, Control and Command buttons are swapped (not just for Slicer but for all multi-platform software) so there you need to use Command + Alt + Left-click-and-drag. You can also use pinch-and-rotate gesture on the Mac touchpad to rotate slice intersections.