# Segmentation alignement

**URL:** <https://discourse.slicer.org/t/segmentation-alignement/15797>\
**Category:** Development\
**Created:** [February 2, 2021, 2:52pm UTC](https://discourse.slicer.org/t/segmentation-alignement/15797 "2021-02-02T14:52:46Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![loubna](https://avatars.discourse-cdn.com/v4/letter/l/cab0a1/32.png) [@loubna](https://discourse.slicer.org/u/loubna)\
**Post date:** [February 2, 2021, 2:52pm UTC](https://discourse.slicer.org/t/segmentation-alignement/15797/1 "2021-02-02T14:52:46Z")

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Hi everyone,

I have a segmentation and MRI sequence in nii format , and want to overlay/align them. What is the best way to go about this?

 ![seg_volume](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/3/03e123839c6a282fb3f119c4e285c74451a2456d.jpeg)

Thanks in advance!

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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:** [February 2, 2021, 4:47pm UTC](https://discourse.slicer.org/t/segmentation-alignement/15797/2 "2021-02-02T16:47:51Z")

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How the segmentation was created? Why is it not already aligned with the image (has the segmentation been created from another image)?

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**Author:** ![loubna](https://avatars.discourse-cdn.com/v4/letter/l/cab0a1/32.png) [@loubna](https://discourse.slicer.org/u/loubna)\
**Post date:** [February 3, 2021, 8:51am UTC](https://discourse.slicer.org/t/segmentation-alignement/15797/3 "2021-02-03T08:51:15Z")

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yes I also think that the segmentation has been created from another dataset.

I need Brain MRI dataset for my research project. Can anyone suggest a dataset that publicly available brain MRI images?

thank’s in advance

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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:** [February 3, 2021, 4:26pm UTC](https://discourse.slicer.org/t/segmentation-alignement/15797/4 "2021-02-03T16:26:12Z")

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You can download a brain MRI dataset with very detailed segmentation using Data Store module: Atlas Collection → NAC Brain Atlas 2015.