# Segment has invisible bounds smaller than master volume

**URL:** <https://discourse.slicer.org/t/segment-has-invisible-bounds-smaller-than-master-volume/4676>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [November 7, 2018, 10:07pm UTC](https://discourse.slicer.org/t/segment-has-invisible-bounds-smaller-than-master-volume/4676 "2018-11-07T22:07:19Z")\
**Posts on this page:** 1\
**Showing post:** 6

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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 8, 2018, 6:19pm UTC](https://discourse.slicer.org/t/segment-has-invisible-bounds-smaller-than-master-volume/4676/6 "2018-11-08T18:19:01Z")

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If you use a recent Slicer version, you can set very high resolution for your internal labelmap representation and set any region size. To specify an arbitrary region size, create an annotation ROI node and choose that as “Source geometry” in the Segmentation geometry popup.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/c/fce6778641a4a527c146377c1a7a7d1fd13414f9.png)

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_[View the full topic](https://discourse.slicer.org/t/segment-has-invisible-bounds-smaller-than-master-volume/4676)._