# New video tutorial for Segment editor - whole-heart segmentation from CT

**URL:** <https://discourse.slicer.org/t/new-video-tutorial-for-segment-editor-whole-heart-segmentation-from-ct/1731>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [December 27, 2017, 4:33am UTC](https://discourse.slicer.org/t/new-video-tutorial-for-segment-editor-whole-heart-segmentation-from-ct/1731 "2017-12-27T04:33:45Z")\
**Posts on this page:** 4\
**Page:** 1

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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:** [December 27, 2017, 4:33am UTC](https://discourse.slicer.org/t/new-video-tutorial-for-segment-editor-whole-heart-segmentation-from-ct/1731/1 "2017-12-27T04:33:45Z")

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This is the second part of a video tutorial series that teaches how to use Segment editor. This tutorial explains how to segment whole heart (heart ventricles, atria, and great vessels) from cardiac CT volumes. Used effects: Paint, Grow from seeds, Smoothing, Surface cut.

Please post your comments here about how useful this tutorial format is, what did you like/what to improve, what topics/techniques/anatomical structures you would be interested in upcoming tutorials.

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**Author:** ![brhoom](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/brhoom/32/1228_2.png) [@brhoom](https://discourse.slicer.org/u/brhoom)\
**Post date:** [January 4, 2018, 10:30pm UTC](https://discourse.slicer.org/t/new-video-tutorial-for-segment-editor-whole-heart-segmentation-from-ct/1731/2 "2018-01-04T22:30:09Z")

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Nice work.  
How can I disable “Grow from seeds” update when I am correcting the segmentation (painting)?  
Sometimes I made mistakes and the “undo” button does not help.  
Regards!

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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:** [January 5, 2018, 3:03am UTC](https://discourse.slicer.org/t/new-video-tutorial-for-segment-editor-whole-heart-segmentation-from-ct/1731/3 "2018-01-05T03:03:59Z")

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If you delete seeds (or undo painting seeds) then you need to go to “Grow from seeds” effect, click Cancel and click Initialize again. See more information about “Grow from seeds” effect [here](http://slicer.readthedocs.io/en/latest/user_guide/module_segmenteditor.html#grow-from-seeds-grow-from-seeds).

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**Author:** ![brhoom](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/brhoom/32/1228_2.png) [@brhoom](https://discourse.slicer.org/u/brhoom)\
**Post date:** [January 5, 2018, 10:09am UTC](https://discourse.slicer.org/t/new-video-tutorial-for-segment-editor-whole-heart-segmentation-from-ct/1731/4 "2018-01-05T10:09:59Z")

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Thanks, that was helpful.