# Compute Bone Morphometry Help

**URL:** <https://discourse.slicer.org/t/compute-bone-morphometry-help/33094>\
**Category:** Support\
**Created:** [November 28, 2023, 6:35pm UTC](https://discourse.slicer.org/t/compute-bone-morphometry-help/33094 "2023-11-28T18:35:12Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![jamieawren](https://avatars.discourse-cdn.com/v4/letter/j/da6949/32.png) [@jamieawren](https://discourse.slicer.org/u/jamieawren)\
**Post date:** [November 28, 2023, 6:35pm UTC](https://discourse.slicer.org/t/compute-bone-morphometry-help/33094/1 "2023-11-28T18:35:12Z")

</div>

Hi Everyone,

I am having trouble with the compute bone morphometry features module. I segment bone using threshold for masking and then make my selection, convert the segment to a binary label map, then select the parent CT scan as the input volume, and the segment label as the input mask.

I am consistently getting “1” for Percent Bone Volume, and “0” for Tb Separation. However, on some scans, these variables return the expected values. I can’t figure out why some scans are returning values and some are not. Everything is identical between the scans and the workflow. I haven’t found the module’s tutorial to be helpful.

Any help would be enormously appreciated!

Jamie