# Measuring distance between markers in 2 different scans, struggling with transform because of unknown segment origins?

**URL:** <https://discourse.slicer.org/t/measuring-distance-between-markers-in-2-different-scans-struggling-with-transform-because-of-unknown-segment-origins/21717>\
**Category:** Support\
**Created:** [January 31, 2022, 7:01pm UTC](https://discourse.slicer.org/t/measuring-distance-between-markers-in-2-different-scans-struggling-with-transform-because-of-unknown-segment-origins/21717 "2022-01-31T19:01:17Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![tbmeier](https://avatars.discourse-cdn.com/v4/letter/t/8797f3/32.png) [@tbmeier](https://discourse.slicer.org/u/tbmeier)\
**Post date:** [February 2, 2022, 5:51pm UTC](https://discourse.slicer.org/t/measuring-distance-between-markers-in-2-different-scans-struggling-with-transform-because-of-unknown-segment-origins/21717/5 "2022-02-02T17:51:51Z")

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I think I found the answer here !! [How to provide global coordinate system after crop volume segment? - #2 by lassoan](https://discourse.slicer.org/t/how-to-provide-global-coordinate-system-after-crop-volume-segment/1199/2)

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_[View the full topic](https://discourse.slicer.org/t/measuring-distance-between-markers-in-2-different-scans-struggling-with-transform-because-of-unknown-segment-origins/21717)._