# How do I find the resolution of the image I have opened in slicer?

**URL:** <https://discourse.slicer.org/t/how-do-i-find-the-resolution-of-the-image-i-have-opened-in-slicer/531>\
**Category:** Support\
**Created:** [June 19, 2017, 7:00pm UTC](https://discourse.slicer.org/t/how-do-i-find-the-resolution-of-the-image-i-have-opened-in-slicer/531 "2017-06-19T19:00:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Josiah\_McAllister](https://avatars.discourse-cdn.com/v4/letter/j/ccd318/32.png) [@Josiah\_McAllister](https://discourse.slicer.org/u/Josiah_McAllister)\
**Post date:** [June 19, 2017, 7:00pm UTC](https://discourse.slicer.org/t/how-do-i-find-the-resolution-of-the-image-i-have-opened-in-slicer/531/1 "2017-06-19T19:00:38Z")

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Operating system:Windows 7  
Slicer version:4.6.2  
Expected behavior:  
Actual behavior:

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**Author:** ![ihnorton](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ihnorton/32/9_2.png) [@ihnorton](https://discourse.slicer.org/u/ihnorton)\
**Post date:** [June 19, 2017, 7:25pm UTC](https://discourse.slicer.org/t/how-do-i-find-the-resolution-of-the-image-i-have-opened-in-slicer/531/2 "2017-06-19T19:25:25Z")

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Use the [Volumes](https://www.slicer.org/wiki/Documentation/Nightly/Modules/Volumes) module – see the first tab “Volume Information” for pixel and spacing information.

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/2/327d7aa93f011535ae9d8ddcab45d1b6f2db1a47.png)

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**Author:** ![Josiah\_McAllister](https://avatars.discourse-cdn.com/v4/letter/j/ccd318/32.png) [@Josiah\_McAllister](https://discourse.slicer.org/u/Josiah_McAllister)\
**Post date:** [June 19, 2017, 7:42pm UTC](https://discourse.slicer.org/t/how-do-i-find-the-resolution-of-the-image-i-have-opened-in-slicer/531/3 "2017-06-19T19:42:47Z")

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Is the image origin the pixels?

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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:** [June 19, 2017, 7:51pm UTC](https://discourse.slicer.org/t/how-do-i-find-the-resolution-of-the-image-i-have-opened-in-slicer/531/4 "2017-06-19T19:51:19Z")

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Origin is in defined in the world (RAS) coordinate system, which is usually in mm. If you import from standard DICOM data sets then the unit it is always in mm.