# Accurate measurement of defect skull area. 

**URL:** <https://discourse.slicer.org/t/accurate-measurement-of-defect-skull-area/8970>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [October 31, 2019, 1:18pm UTC](https://discourse.slicer.org/t/accurate-measurement-of-defect-skull-area/8970 "2019-10-31T13:18:47Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [November 4, 2019, 4:32am UTC](https://discourse.slicer.org/t/accurate-measurement-of-defect-skull-area/8970/2 "2019-11-04T04:32:18Z")

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Using latest Slicer Preview Release, you can draw a closed curve on the skull using Markups module and compute the surface area as described here: [How can I calculate an area on a CT image. I can calculate volumes (mm^3) but not areas (mm^2)](https://discourse.slicer.org/t/how-can-i-calculate-an-area-on-a-ct-image-i-can-calculate-volumes-mm-3-but-not-areas-mm-2/1549/3)

If this is not what you need then let us know. There are some other options, too.

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_[View the full topic](https://discourse.slicer.org/t/accurate-measurement-of-defect-skull-area/8970)._