# Neighborhood Size in median filter

**URL:** <https://discourse.slicer.org/t/neighborhood-size-in-median-filter/17110>\
**Category:** Support\
**Created:** [April 15, 2021, 6:35pm UTC](https://discourse.slicer.org/t/neighborhood-size-in-median-filter/17110 "2021-04-15T18:35:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gonzalo\_Rojas\_Costa](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/gonzalo_rojas_costa/32/5259_2.png) [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Post date:** [April 15, 2021, 6:35pm UTC](https://discourse.slicer.org/t/neighborhood-size-in-median-filter/17110/1 "2021-04-15T18:35:37Z")

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Hi:

The Neighborhood Size in the Median Filter parameters section is in voxels or mm?

Sincerely,

Gonzalo Rojas Costa

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [April 15, 2021, 9:45pm UTC](https://discourse.slicer.org/t/neighborhood-size-in-median-filter/17110/2 "2021-04-15T21:45:08Z")

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That’s based on an ITK filter of the same name and I’m pretty sure it’s in pixels. You can try changing the spacing in the Volumes module and run the filter again and confirm you get the same result.