# How do I mark and calculate volume on a dicom image?

**URL:** <https://discourse.slicer.org/t/how-do-i-mark-and-calculate-volume-on-a-dicom-image/762>\
**Category:** Support\
**Created:** [July 25, 2017, 3:12pm UTC](https://discourse.slicer.org/t/how-do-i-mark-and-calculate-volume-on-a-dicom-image/762 "2017-07-25T15:12:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![anubhutig](https://avatars.discourse-cdn.com/v4/letter/a/b2d939/32.png) [@anubhutig](https://discourse.slicer.org/u/anubhutig)\
**Post date:** [July 25, 2017, 3:12pm UTC](https://discourse.slicer.org/t/how-do-i-mark-and-calculate-volume-on-a-dicom-image/762/1 "2017-07-25T15:12:04Z")

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Hi guys  
I’m new to slicer.  
I’m a postgrad in Endodontics.  
Could anyone help me with a project I’m doing with CBCT?  
I need to mark and calculate volumes of specific objects on a dicom image.  
Could I please get some help with that?  
It’ll be a big favour!🙂  
Thanks in advance!

Operating system: Win 10 64bit  
Slicer version: Latest  
Expected behavior:  
Actual behavior:

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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:** [July 25, 2017, 6:01pm UTC](https://discourse.slicer.org/t/how-do-i-mark-and-calculate-volume-on-a-dicom-image/762/2 "2017-07-25T18:01:34Z")

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Segment your object of interests using `Segment editor` module and then compute volumes using `Segment statistics` module. Use the latest **nightly** version of Slicer (Slicer 4.6.2 is not suitable).

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**Author:** ![soulrin072](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/soulrin072/32/77884_2.png) [@soulrin072](https://discourse.slicer.org/u/soulrin072)\
**Post date:** [September 10, 2024, 4:44am UTC](https://discourse.slicer.org/t/how-do-i-mark-and-calculate-volume-on-a-dicom-image/762/3 "2024-09-10T04:44:51Z")

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Can you explain more about this  
I do have a dicom file \>\> MRI brain  
I need to calculate volume of pituitary  
Can you explain how to calculate it or show me the link of video or step to follow  
Thank you so much

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<div class="post-metadata">

**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:** [September 10, 2024, 9:28pm UTC](https://discourse.slicer.org/t/how-do-i-mark-and-calculate-volume-on-a-dicom-image/762/4 "2024-09-10T21:28:27Z")

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First you need to segment the pituitary. A good starting point for image segmentation is [this page](https://slicer.readthedocs.io/en/latest/user_guide/image_segmentation.html). You can then use “Segment Statistics” module to get the volume (just 1-2 clicks). You can find video tutorials for all these on youtube but you can also ask for clarification here if you get stuck at any point.