# Interpolation and extrapolation of MRI images

**URL:** <https://discourse.slicer.org/t/interpolation-and-extrapolation-of-mri-images/11534>\
**Category:** Support\
**Created:** [May 14, 2020, 8:06am UTC](https://discourse.slicer.org/t/interpolation-and-extrapolation-of-mri-images/11534 "2020-05-14T08:06:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Jonathan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jonathan/32/5635_2.png) [@Jonathan](https://discourse.slicer.org/u/Jonathan)\
**Post date:** [May 14, 2020, 8:06am UTC](https://discourse.slicer.org/t/interpolation-and-extrapolation-of-mri-images/11534/1 "2020-05-14T08:06:48Z")

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Hi,  
I am trying to reconstruct a heart model from MRI scans.  
I used the Segmentation Editor to create a 3d model and managed to get the following result:

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/1/011b40c8ef93e2793ad252eaf9acb929c1ce0960.png)

Which feature can I use to fill the holes of the outer layer? interpolation is not ideal due to the large distance between the contours.  
Furthermore, I am missing the slice of the tip of the apex. Is it suitable to make an extrapulation? if so how?

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/8/58a5da58113147bbf5784bee89fb5122f68a502f.png)

thank you.