# Subtracting two dicom images

**URL:** <https://discourse.slicer.org/t/subtracting-two-dicom-images/8682>\
**Category:** Support\
**Created:** [October 5, 2019, 12:32pm UTC](https://discourse.slicer.org/t/subtracting-two-dicom-images/8682 "2019-10-05T12:32:18Z")\
**Posts on this page:** 1\
**Showing post:** 6

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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, 2019, 11:23am UTC](https://discourse.slicer.org/t/subtracting-two-dicom-images/8682/6 "2019-10-11T11:23:34Z")

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You can combine volumes with arbitrary mathematical formula using numpy. See for example this post: [Is it possible to view more than two image volumes at the same time in slice viewers?](https://discourse.slicer.org/t/is-it-possible-to-view-more-than-two-image-volumes-at-the-same-time-in-slice-viewers/8738/2)

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