# Hounsfield unit

**URL:** <https://discourse.slicer.org/t/hounsfield-unit/26458>\
**Category:** Support\
**Created:** [November 27, 2022, 11:03am UTC](https://discourse.slicer.org/t/hounsfield-unit/26458 "2022-11-27T11:03:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Nima\_Yousefi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/nima_yousefi/32/66845_2.png) [@Nima\_Yousefi](https://discourse.slicer.org/u/Nima_Yousefi)\
**Post date:** [November 27, 2022, 11:03am UTC](https://discourse.slicer.org/t/hounsfield-unit/26458/1 "2022-11-27T11:03:23Z")

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Hi all  
Currently I’m working on ct scan images and using “Lung ct segmenter” and “Radiomics” extension.  
How can I convert those images to HU unit?

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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 27, 2022, 3:52pm UTC](https://discourse.slicer.org/t/hounsfield-unit/26458/2 "2022-11-27T15:52:20Z")

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Voxel values of clinical CT images are already in Hounsfield unit.