# Calibration of the NDI aurora tracking system with DICOM images and respective segmentations

**URL:** <https://discourse.slicer.org/t/calibration-of-the-ndi-aurora-tracking-system-with-dicom-images-and-respective-segmentations/37059>\
**Category:** Support\
**Tags:** surgical-navigation\
**Created:** [June 27, 2024, 2:30am UTC](https://discourse.slicer.org/t/calibration-of-the-ndi-aurora-tracking-system-with-dicom-images-and-respective-segmentations/37059 "2024-06-27T02:30:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![\_Mara10](https://avatars.discourse-cdn.com/v4/letter/_/8491ac/32.png) [@\_Mara10](https://discourse.slicer.org/u/_Mara10)\
**Post date:** [June 27, 2024, 2:30am UTC](https://discourse.slicer.org/t/calibration-of-the-ndi-aurora-tracking-system-with-dicom-images-and-respective-segmentations/37059/1 "2024-06-27T02:30:18Z")

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_Automatically translated by Google Translate:_

Hi, I connected the 6DOF sensor using Plus Toolkit and the IGTLink slicer extension, after which I loaded DICOM files with respective segmentations recorded on the CT, but in the 3D view the sensor and images are distant, they are not centered together. How can I proceed to calibrate them appropriately and see them superimposed in the same reference system? I tried following the U-12 tutorial in [User tutorial | SlicerIGT](https://www.slicerigt.org/wp/user-tutorial/) but I can’t get it to work well.

> **Original in Italian**
>
> calibrazione sistema tracking NDI aurora con immagini DICOM e rispettive segmentazioni
> 
> Salve, ho collegato il sensore 6d.o.f mediante Plus Toolkit e l’estensione slicer IGTLink, dopodichè ho caricato file DICOM con rispettive segmentazioni registrate sulla CT, ma nella visualizzazione in 3D sensore e immagini sono distanti, non sono centrati insieme. Come posso procedere per calibrarli opportunamente e vederli sovrapposti nello stesso sistema di riferimento? Ho provato a seguire il tutorial U-12 in [User tutorial | SlicerIGT](https://www.slicerigt.org/wp/user-tutorial/) ma non riesco a farlo funzionare bene.