# About fast marching

**URL:** <https://discourse.slicer.org/t/about-fast-marching/11584>\
**Category:** Support\
**Created:** [May 17, 2020, 6:28am UTC](https://discourse.slicer.org/t/about-fast-marching/11584 "2020-05-17T06:28:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![anitakh1](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/anitakh1/32/3350_2.png) [@anitakh1](https://discourse.slicer.org/u/anitakh1)\
**Post date:** [May 17, 2020, 6:28am UTC](https://discourse.slicer.org/t/about-fast-marching/11584/1 "2020-05-17T06:28:48Z")

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i was following [https://www.youtube.com/watch?v=tJMGe3FMTk0](https://www.youtube.com/watch?v=tJMGe3FMTk0) and wanted to try similar thing but fast marching is not in the slicer i downloaded. i have slicer 4.8.1, 4.10and now downloaded 4.11.0 preview release but can’t find fast marching effect. pl help me to get this. thanks

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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 17, 2020, 1:58pm UTC](https://discourse.slicer.org/t/about-fast-marching/11584/2 "2020-05-17T13:58:50Z")

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Fast Marching effect is in SegmentEditorExtraEffects extension. If you install this extension and restart Slicer then the effect will show up in Segment Editor.

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**Author:** ![anitakh1](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/anitakh1/32/3350_2.png) [@anitakh1](https://discourse.slicer.org/u/anitakh1)\
**Post date:** [May 18, 2020, 3:08pm UTC](https://discourse.slicer.org/t/about-fast-marching/11584/3 "2020-05-18T15:08:59Z")

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thank you so much sir. regards