# Resampling a 3D CT Image

**URL:** <https://discourse.slicer.org/t/resampling-a-3d-ct-image/618>\
**Category:** Support\
**Tags:** resample\
**Created:** [July 3, 2017, 5:10pm UTC](https://discourse.slicer.org/t/resampling-a-3d-ct-image/618 "2017-07-03T17:10:55Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![arumiat](https://avatars.discourse-cdn.com/v4/letter/a/f05b48/32.png) [@arumiat](https://discourse.slicer.org/u/arumiat)\
**Post date:** [April 10, 2018, 10:20am UTC](https://discourse.slicer.org/t/resampling-a-3d-ct-image/618/10 "2018-04-10T10:20:03Z")

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By current spacing 720x720px so (720, 720, 4) ?

* * *

Hi Andras, I don’t need an exact output size, I’m just trying to work on getting my volume down to a smaller size so I can serve it across the internet. ([Working with large datasets](https://discourse.slicer.org/t/working-with-large-datasets/2469/11))

One method I haven’t tried yet which would I imagine help a lot is reducing the number of images in the z-plane, hence the above discussion.

So in summary my overall pipeline is to

1. reduce number of images in the z-plane using above method
2. crop the volume to just the region of interest
3. rescale images to a more reasonable size (around 256x256 or 300x300 px)
4. save as nrrd or mrda

and see where that gets me =)  
PS I didn’t realise crop volume could also resize, any tutorials on using?

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