# 4D cardiac CT Strain analysis

**URL:** <https://discourse.slicer.org/t/4d-cardiac-ct-strain-analysis/22789>\
**Category:** Support\
**Created:** [April 1, 2022, 10:59am UTC](https://discourse.slicer.org/t/4d-cardiac-ct-strain-analysis/22789 "2022-04-01T10:59:32Z")\
**Posts on this page:** 1\
**Showing post:** 5

<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:** [April 25, 2022, 1:20pm UTC](https://discourse.slicer.org/t/4d-cardiac-ct-strain-analysis/22789/5 "2022-04-25T13:20:43Z")

</div>

I’ve replied here:

> [@Export heart motion to CFD/FSI](https://discourse.slicer.org/t/export-heart-motion-to-cfd-fsi/22913/20):
>
> Hi @lassoan , thanks for your help with the position extracting. However I met another problem right now: I want to calculate strain tensor of the boundary. I read your suggestion [here](https://discourse.slicer.org/t/4d-cardiac-ct-strain-analysis/22789/3) so I’m trying to export the displacement field. I found an example for extracting displacement field [here](https://slicer.readthedocs.io/en/latest/developer_guide/script_repository.html#export-the-displacement-magnitude-of-the-transform-as-a-volume). However, I only want the displacement field in the segmentation/model, but not the entire volume. Can I transfer a segmentation into a new volume so that I can export the displacement magnitude of the transf…

Please continue the discussion there.

---

_[View the full topic](https://discourse.slicer.org/t/4d-cardiac-ct-strain-analysis/22789)._