# Reduction Metal Artefacts CT in bone fracture

**URL:** <https://discourse.slicer.org/t/reduction-metal-artefacts-ct-in-bone-fracture/27273>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [January 16, 2023, 7:02pm UTC](https://discourse.slicer.org/t/reduction-metal-artefacts-ct-in-bone-fracture/27273 "2023-01-16T19:02:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nordimi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/nordimi/32/65684_2.png) [@nordimi](https://discourse.slicer.org/u/nordimi)\
**Post date:** [January 16, 2023, 7:02pm UTC](https://discourse.slicer.org/t/reduction-metal-artefacts-ct-in-bone-fracture/27273/1 "2023-01-16T19:02:33Z")

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Hello,

I need to segment a bone fragments from a fracture with external fixateur and do a 3D-reconstruction of the small segments. Due to metal artifacts from the fixateur, selecting all the small segments is difficult. Is there some filter that I could apply for reduction of the metal artifacts?

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**Author:** ![MarkusHeller](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/markusheller/32/11046_2.png) [@MarkusHeller](https://discourse.slicer.org/u/MarkusHeller)\
**Post date:** [January 17, 2023, 3:41pm UTC](https://discourse.slicer.org/t/reduction-metal-artefacts-ct-in-bone-fracture/27273/2 "2023-01-17T15:41:11Z")

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Dear Nora,

I’m unware of any such filters within slicer (there may well be!),  
but you could have a look at the nice work of Dr Graham Treece/Cambridge that could help here:

> **[Machine Intelligence Laboratory](https://mi.eng.cam.ac.uk/Main/GMT_wxDicom)**
>
> The Machine Intelligence Laboratory is part of the Information Engineering Division of the Department of Engineering, University of Cambridge, UK.

Best wishes, Markus