# How to meaure a single field

**URL:** <https://discourse.slicer.org/t/how-to-meaure-a-single-field/34962>\
**Category:** Support\
**Created:** [March 18, 2024, 7:46pm UTC](https://discourse.slicer.org/t/how-to-meaure-a-single-field/34962 "2024-03-18T19:46:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![shir](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@shir](https://discourse.slicer.org/u/shir)\
**Post date:** [March 18, 2024, 7:46pm UTC](https://discourse.slicer.org/t/how-to-meaure-a-single-field/34962/1 "2024-03-18T19:46:24Z")

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on a single segment i wish to threshold and mesure components. how do I manage to apply the quantification for a single level and not all levels?  
thank you

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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:** [March 18, 2024, 7:48pm UTC](https://discourse.slicer.org/t/how-to-meaure-a-single-field/34962/2 "2024-03-18T19:48:20Z")

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Do you mean you would like to measure cross-sectional area or mean intensity of a segment along a specific axis direction?

Could you describe your overall goal?