# Slice number change

**URL:** <https://discourse.slicer.org/t/slice-number-change/4358>\
**Category:** Support\
**Created:** [October 11, 2018, 12:00pm UTC](https://discourse.slicer.org/t/slice-number-change/4358 "2018-10-11T12:00:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ash\_Alarfaj](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ash_alarfaj/32/3327_2.png) [@Ash\_Alarfaj](https://discourse.slicer.org/u/Ash_Alarfaj)\
**Post date:** [October 11, 2018, 12:00pm UTC](https://discourse.slicer.org/t/slice-number-change/4358/1 "2018-10-11T12:00:14Z")

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Problem report for Slicer 4.8.1 macosx-amd64: [please describe expected and actual behavior]

expected: in the axial image (red viewer) when I’ve moved the mouse from up to down the image the slice number should be same eg. slice 44.

actual behavior: the slice number changes in the same image see red box slice 44 the number change from 44-43 in the same image when I move a mouse from up to down. it is really confusing. how can I know which slice I’ve analyzed.

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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:** [October 11, 2018, 12:16pm UTC](https://discourse.slicer.org/t/slice-number-change/4358/2 "2018-10-11T12:16:01Z")

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Slicer does not display slice number but anatomical position and voxel position in the volume.

As you move your mouse:

- you should see 2 anatomical coordinates changing (if slice orientation is set to axial, sagittal, or coronal) or 3 coordinates changing (for oblique views)
- you should see 2 voxel coordinates changing (if slice view is rotated to volume plane - you can enforce this by clicking “rotate to volume plane” button in the slice view controller) or 3 coordinates changing (is slice view is not aligned to volume axes)

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**Author:** ![Ash\_Alarfaj](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ash_alarfaj/32/3327_2.png) [@Ash\_Alarfaj](https://discourse.slicer.org/u/Ash_Alarfaj)\
**Post date:** [October 11, 2018, 1:27pm UTC](https://discourse.slicer.org/t/slice-number-change/4358/3 "2018-10-11T13:27:17Z")

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> [@lassoan](#):
>
> Slicer does not display slice number but anatomical position and voxel position in the volume.
> 
> As you move your mouse:
> 
> - you should see 2 anatomical coordinates changing (if slice orientation is set to axial, sagittal, or coronal) or 3 coordinates changing (for oblique views)
> - you should see 2 voxel coordinates changing (if slice view is rotated to volume plane - you can enforce this by clicking “rotate to volume plane” button in the slice view controller) or 3 coordinates changing (is slice view is not aligned to volume axes)

thanks a lot this really helps. done the problem is fixed.  
all the best