# Some segmentations are very large

**URL:** <https://discourse.slicer.org/t/some-segmentations-are-very-large/16935>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [April 2, 2021, 9:14pm UTC](https://discourse.slicer.org/t/some-segmentations-are-very-large/16935 "2021-04-02T21:14:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Daniel\_Byrne](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/daniel_byrne/32/8841_2.png) [@Daniel\_Byrne](https://discourse.slicer.org/u/Daniel_Byrne)\
**Post date:** [April 2, 2021, 9:14pm UTC](https://discourse.slicer.org/t/some-segmentations-are-very-large/16935/1 "2021-04-02T21:14:20Z")

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So I have created 7 segmentation a from a knee MRI, and 3 of these segmentation seem to be on a different scale because there huge? Even though they were all exported at the same time

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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:** [April 3, 2021, 12:54am UTC](https://discourse.slicer.org/t/some-segmentations-are-very-large/16935/2 "2021-04-03T00:54:31Z")

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Does the large size cause any issues? “Huge” in what sense (large file, large extent, extent of the segmentation does not match image content, etc.)? How did you export the segment? Into what file format?

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**Author:** ![Daniel\_Byrne](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/daniel_byrne/32/8841_2.png) [@Daniel\_Byrne](https://discourse.slicer.org/u/Daniel_Byrne)\
**Post date:** [April 3, 2021, 11:46am UTC](https://discourse.slicer.org/t/some-segmentations-are-very-large/16935/3 "2021-04-03T11:46:16Z")

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Like as when i try to assemble them there tottally different scale, there from the same model and exported at the same time i have no idea why ?

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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:** [April 3, 2021, 12:24pm UTC](https://discourse.slicer.org/t/some-segmentations-are-very-large/16935/4 "2021-04-03T12:24:29Z")

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Have you exported the segmentation using “Export to files” feature? Have you specified a size scale \> 1?

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [April 5, 2021, 7:38pm UTC](https://discourse.slicer.org/t/some-segmentations-are-very-large/16935/5 "2021-04-05T19:38:13Z")

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What are the file sizes ? What is the problem ?