# Extracting Heart and Aorta

**URL:** <https://discourse.slicer.org/t/extracting-heart-and-aorta/2601>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [April 16, 2018, 2:59pm UTC](https://discourse.slicer.org/t/extracting-heart-and-aorta/2601 "2018-04-16T14:59:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![zsa26](https://avatars.discourse-cdn.com/v4/letter/z/d07c76/32.png) [@zsa26](https://discourse.slicer.org/u/zsa26)\
**Post date:** [April 16, 2018, 2:59pm UTC](https://discourse.slicer.org/t/extracting-heart-and-aorta/2601/1 "2018-04-16T14:59:06Z")

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Hi everyone,

I am a new user to this software and I have been assigned the task of extracting an aorta to make a 3D print. However, whenever I get to the editor and I select threshold, It always recognizes bones and other materials as the same as the heart. I am wondering if anyone can help me accomplish this task.

Thanks,

Zein

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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:** [April 16, 2018, 4:57pm UTC](https://discourse.slicer.org/t/extracting-heart-and-aorta/2601/2 "2018-04-16T16:57:57Z")

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You can learn this from [Video tutorial: Whole heart segmentation from cardiac CT](https://www.slicer.org/wiki/Documentation/Nightly/Training#Slicer4_Image_Segmentation).

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**Author:** ![jamesmoe](https://avatars.discourse-cdn.com/v4/letter/j/5e9695/32.png) [@jamesmoe](https://discourse.slicer.org/u/jamesmoe)\
**Post date:** [January 31, 2019, 1:46am UTC](https://discourse.slicer.org/t/extracting-heart-and-aorta/2601/3 "2019-01-31T01:46:49Z")

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i am in the same situation and carefully went through the tutorial. I am having a really hard time cleanly isolating the aorta. Is there a way to segment the aorta without segmenting the rest of the heart??

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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 31, 2019, 2:05am UTC](https://discourse.slicer.org/t/extracting-heart-and-aorta/2601/4 "2019-01-31T02:05:34Z")

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Yes, sure, you can just paint seeds inside the aorta with one color and paint outside (through everything nearby that is not aorta) with another color. Then use Grow from seeds on these two segments.