# Realization of neuronavigation

**URL:** <https://discourse.slicer.org/t/realization-of-neuronavigation/17523>\
**Category:** Support\
**Tags:** surgical-navigation\
**Created:** [May 8, 2021, 2:21pm UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523 "2021-05-08T14:21:59Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![slicer365](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/slicer365/32/67549_2.png) [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Post date:** [May 8, 2021, 2:21pm UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/1 "2021-05-08T14:21:59Z")

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[![](https://img.youtube.com/vi/MOqh6wgOOYs/maxresdefault.jpg "Webcam-based tracking in 3D Slicer/SlicerIGT") ](https://www.youtube.com/watch?v=MOqh6wgOOYs)

I would love to try the navigation function of this camera, but how should I operate it and which app should I download?Where can I get a more detailed tutorial

 ![捕获](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/e/9e3b3cad3d00d29eab6e9ea8fb6ad6dcaf43dca6.jpeg)

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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:** [May 10, 2021, 4:48am UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/2 "2021-05-10T04:48:51Z")

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You can find step-by-step instructions in this PerkLab bootcamp tutorial.

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**Author:** ![slicer365](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/slicer365/32/67549_2.png) [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Post date:** [May 11, 2021, 1:48am UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/3 "2021-05-11T01:48:04Z")

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Thank you very much Professor Lasso,I strictly follow the steps of PPT, but every time I get here, I cannot get these three transforms.It show empty！  
 ![无标题](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/3/f38049f1ba1fe81291b07537a9fb74be62fc0fb2.png)

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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:** [May 11, 2021, 4:28am UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/4 "2021-05-11T04:28:50Z")

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You need to place the markers in the field of view of your camera. The markers that Plus recognizes will show up in the IN nodes.

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**Author:** ![slicer365](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/slicer365/32/67549_2.png) [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Post date:** [May 12, 2021, 1:07pm UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/5 "2021-05-12T13:07:41Z")

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Thank you very much for your answers, thank you for your patience, now I am all ready, but there is one more question, how to register the Sign and the Entity.For example, I put a skull model on the table, and the matching CT model is displayed in Slicer at the same time, but how can I make them registered like the video?

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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:** [May 12, 2021, 1:39pm UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/6 "2021-05-12T13:39:22Z")

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> [@slicer365](#):
>
> I put a skull model on the table, and the matching CT model is displayed in Slicer at the same time, but how can I make them registered like the video?

Registration of this patient-attached tracking marker to the patient image is typically performed using landmark registration. The process is described in [SlicerIGT tutorials](http://www.slicerigt.org/wp/user-tutorial/).

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**Author:** ![fanyifeng](https://avatars.discourse-cdn.com/v4/letter/f/e8c25b/32.png) [@fanyifeng](https://discourse.slicer.org/u/fanyifeng)\
**Post date:** [November 9, 2021, 10:07am UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/7 "2021-11-09T10:07:23Z")

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Can you send me the PPT, I cannot open the URL:[User tutorial | SlicerIGT](http://www.slicerigt.org/wp/user-tutorial/)

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**Author:** ![fanyifeng](https://avatars.discourse-cdn.com/v4/letter/f/e8c25b/32.png) [@fanyifeng](https://discourse.slicer.org/u/fanyifeng)\
**Post date:** [November 9, 2021, 10:12am UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/8 "2021-11-09T10:12:26Z")

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Dear Lasson, Can you send me the documents in [SlicerIGT tutorials](http://www.slicerigt.org/wp/user-tutorial/), I cannot open the URL:[User tutorial | SlicerIGT](http://www.slicerigt.org/wp/user-tutorial/) in China. I also want to realize a neuronavigation using 3D Slicer.

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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:** [November 11, 2021, 5:55am UTC](https://discourse.slicer.org/t/realization-of-neuronavigation/17523/9 "2021-11-11T05:55:30Z")

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Accessibility of SlicerIGT tutorials from China is discussed further here:

> [@The user-tutorial cannot be readed in China](https://discourse.slicer.org/t/the-user-tutorial-cannot-be-readed-in-china/20536/7):
>
> Thanks for confirming. Sounds like that to the user, the OneDrive dependency is at least partially hidden (it isn’t explicitly declared, but it might be visible in the link). If OneDrive is uniformly used, and if it turns out that it’s the reason why the tutorials aren’t available in China, some sort of note like (“Can’t access these tutorials?”) which links off to a workaround page might be the most helpful to a beginning user.