# How to correct for mask volume in ITK?

**URL:** <https://discourse.itk.org/t/how-to-correct-for-mask-volume-in-itk/3252>\
**Category:** Beginner Questions\
**Created:** [July 2, 2020, 11:26am UTC](https://discourse.itk.org/t/how-to-correct-for-mask-volume-in-itk/3252 "2020-07-02T11:26:52Z")\
**Posts on this page:** 1\
**Showing post:** 14

<div class="post-metadata">

**Author:** ![zivy](https://discourse.itk.org/user_avatar/discourse.itk.org/zivy/32/1726_2.png) [@zivy](https://discourse.itk.org/u/zivy)\
**Post date:** [March 31, 2023, 2:46pm UTC](https://discourse.itk.org/t/how-to-correct-for-mask-volume-in-itk/3252/14 "2023-03-31T14:46:46Z")

</div>

Hello @jizhang02,

Please see [this discussion on image spacing](https://discourse.itk.org/t/z-spacing-in-image-series-reader/2167/4). What you highlighted, slice thickness, is a different quantity and is obtained from the DICOM tag (0018|0050).

---

_[View the full topic](https://discourse.itk.org/t/how-to-correct-for-mask-volume-in-itk/3252)._