# Different operation systems

**URL:** <https://discourse.slicer.org/t/different-operation-systems/20768>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [November 24, 2021, 9:46am UTC](https://discourse.slicer.org/t/different-operation-systems/20768 "2021-11-24T09:46:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ash\_Alarfaj](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ash_alarfaj/32/3327_2.png) [@Ash\_Alarfaj](https://discourse.slicer.org/u/Ash_Alarfaj)\
**Post date:** [November 24, 2021, 9:46am UTC](https://discourse.slicer.org/t/different-operation-systems/20768/1 "2021-11-24T09:46:24Z")

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Operating system: MAC OS OR WINDOWS  
Slicer version: 4.11.  
Expected behavior: Can I do threshold segmentation for calculating volume changes for many visits in different operating and screens,Mac os or windows. Do that affect the measurement comparison?  
Actual behavior:

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**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [November 24, 2021, 10:04am UTC](https://discourse.slicer.org/t/different-operation-systems/20768/2 "2021-11-24T10:04:47Z")

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You have to specify the origin of your images: CT, MRI, PET, SPECT, Other??

The answer depends on image type.

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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 24, 2021, 1:52pm UTC](https://discourse.slicer.org/t/different-operation-systems/20768/3 "2021-11-24T13:52:58Z")

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Operating system should not matter. If you make the same measurements on the same images then results will be the same regardless of the operating system.

If you measure different images: see @Alex_Vergara answer above.