# Can I reproduction of change in body shape

**URL:** <https://discourse.slicer.org/t/can-i-reproduction-of-change-in-body-shape/29579>\
**Category:** Development\
**Tags:** registration\
**Created:** [May 22, 2023, 1:36pm UTC](https://discourse.slicer.org/t/can-i-reproduction-of-change-in-body-shape/29579 "2023-05-22T13:36:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sotarad](https://avatars.discourse-cdn.com/v4/letter/s/e47c2d/32.png) [@sotarad](https://discourse.slicer.org/u/sotarad)\
**Post date:** [May 22, 2023, 1:36pm UTC](https://discourse.slicer.org/t/can-i-reproduction-of-change-in-body-shape/29579/1 "2023-05-22T13:36:27Z")

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Hi all. I want to transform OAR volume into smaller in order to reproduct of change in body shape.  
Finaly, I want to get DVFs that shrink some OARs.  
I think if I could get DVF from contour base DIR, the challenge will be solved.  
But, in the first place I don’t know how to do contour base DIR in the 3Dslicer.  
If you have other way to reproduct of change in body shape, please tell me that.

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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:** [May 23, 2023, 3:17am UTC](https://discourse.slicer.org/t/can-i-reproduction-of-change-in-body-shape/29579/2 "2023-05-23T03:17:12Z")

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You can compute displacement vector field from shape change of a segmented structure using [SegmentRegistration](https://github.com/SlicerRt/SegmentRegistration#segment-registration) extension.

If you want to simulate shape change then you can also prescribe displacement at specific point positions and compute a dense displacement vector field using Fiducial Registration Wizard module in SlicerIGT extension:

[![](https://img.youtube.com/vi/GfDDQykH1iY/maxresdefault.jpg "Soft tissue deformation simulation") ](https://www.youtube.com/watch?v=GfDDQykH1iY)

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**Author:** ![sotarad](https://avatars.discourse-cdn.com/v4/letter/s/e47c2d/32.png) [@sotarad](https://discourse.slicer.org/u/sotarad)\
**Post date:** [May 24, 2023, 12:18am UTC](https://discourse.slicer.org/t/can-i-reproduction-of-change-in-body-shape/29579/3 "2023-05-24T00:18:20Z")

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Thanks for comment, Mr. Lasso.  
I can do what I want with Segment Registration.  
And I hadn’t installed untill you teach me about SliceIGT.  
So,I think that very interesting tool.  
I make an effort using this for my study.