# Where is HU at Segment Statistics module?

**URL:** https://discourse.slicer.org/t/where-is-hu-at-segment-statistics-module/28861
**Category:** Support
**Created:** [April 12, 2023, 11:32am UTC](https://discourse.slicer.org/t/where-is-hu-at-segment-statistics-module/28861 "2023-04-12T11:32:37Z")
**Posts on this page:** 3
**Page:** 2

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### Author: ![Igor1023](https://avatars.discourse-cdn.com/v4/letter/i/ec9cab/32.png) [@Igor1023](https://discourse.slicer.org/u/Igor1023)
#### Post date: [April 19, 2023, 4:54pm UTC](https://discourse.slicer.org/t/where-is-hu-at-segment-statistics-module/28861/21 "2023-04-19T16:54:34Z")

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thank you very much. and to be 100% sure mean column is in HU right?

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### Author: ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [April 19, 2023, 5:01pm UTC](https://discourse.slicer.org/t/where-is-hu-at-segment-statistics-module/28861/22 "2023-04-19T17:01:42Z")

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Yes, CT scans come in units of HU. What we don’t always know is how accurately the HU is measured by the device, so there may be some amount of error due to the scanner and/or discretization of the pixels and segmentation so you should keep that in mind when interpreting the numbers for any specific task.

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### Author: ![Igor1023](https://avatars.discourse-cdn.com/v4/letter/i/ec9cab/32.png) [@Igor1023](https://discourse.slicer.org/u/Igor1023)
#### Post date: [April 19, 2023, 5:03pm UTC](https://discourse.slicer.org/t/where-is-hu-at-segment-statistics-module/28861/23 "2023-04-19T17:03:17Z")

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thanks you made my day.

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