# I cannot find fastgrowcut extension in latest version 4.11.

**URL:** <https://discourse.slicer.org/t/i-cannot-find-fastgrowcut-extension-in-latest-version-4-11/4640>\
**Category:** Support\
**Created:** [November 5, 2018, 3:38pm UTC](https://discourse.slicer.org/t/i-cannot-find-fastgrowcut-extension-in-latest-version-4-11/4640 "2018-11-05T15:38:23Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Chen\_Bangbin](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@Chen\_Bangbin](https://discourse.slicer.org/u/Chen_Bangbin)\
**Post date:** [November 5, 2018, 3:38pm UTC](https://discourse.slicer.org/t/i-cannot-find-fastgrowcut-extension-in-latest-version-4-11/4640/1 "2018-11-05T15:38:23Z")

</div>

I just installed latest 3d slicer version 4.11, but cannot find fastgrocut extension.  
Is ‘‘fastgrowcut’’ extension deleted from the latest version?  
I am using mac version.  
Thank you for your help!

---

<div class="post-metadata">

**Author:** ![Sam\_Horvath](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sam_horvath/32/3092_2.png) [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Post date:** [November 5, 2018, 4:01pm UTC](https://discourse.slicer.org/t/i-cannot-find-fastgrowcut-extension-in-latest-version-4-11/4640/2 "2018-11-05T16:01:21Z")

</div>

The extension is still present in the index, but is currently failing to build on all platforms.

It appears to have been broken when a legacy function was removed from ITK:  
`error: ‘class itk::TimeProbe’ has no member named ‘GetMeanTime’`

---

<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:** [November 5, 2018, 4:44pm UTC](https://discourse.slicer.org/t/i-cannot-find-fastgrowcut-extension-in-latest-version-4-11/4640/3 "2018-11-05T16:44:30Z")

</div>

The old fastgrowcut extension has been completely reworked, hugely improved in performance, robustness, and usability, and the result has been made available in Segment editor module as “[Grow from seeds](https://slicer.readthedocs.io/en/latest/user_guide/module_segmenteditor.html#grow-from-seeds-grow-from-seeds)” effect. You can find several tutorials about how to use it on the [training page](https://www.slicer.org/wiki/Documentation/Nightly/Training#Segmentation).