# Import labelmap and re-threshold

**URL:** <https://discourse.slicer.org/t/import-labelmap-and-re-threshold/7090>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [June 8, 2019, 11:07pm UTC](https://discourse.slicer.org/t/import-labelmap-and-re-threshold/7090 "2019-06-08T23:07:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Dmitriy\_Desser](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dmitriy_desser/32/3523_2.png) [@Dmitriy\_Desser](https://discourse.slicer.org/u/Dmitriy_Desser)\
**Post date:** [June 8, 2019, 11:07pm UTC](https://discourse.slicer.org/t/import-labelmap-and-re-threshold/7090/1 "2019-06-08T23:07:25Z")

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Hi guys,

I have some longitudinal brain mri data. I am wondering, if it is possible after segmenting (thresholded paint brush from segment editor) one file (e.g. ses-01) and saving the segmentation to a label map to load and apply it on the next file (e.g. ses-02) and “re-threshold” it within the segmentation?

I would apriciate any help very much!

Cheers,

Dima

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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:** [June 8, 2019, 11:52pm UTC](https://discourse.slicer.org/t/import-labelmap-and-re-threshold/7090/2 "2019-06-08T23:52:43Z")

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Yes, sure. 1. You can switch master volume any time. 2. To restrict an effect to operate only inside/outside selected segment(s), adjust masking settings near the bottom of the Segment Editor panel.