# Lung Vessels module

**URL:** <https://discourse.slicer.org/t/lung-vessels-module/15415>\
**Category:** Support\
**Tags:** segmentation, lung\
**Created:** [January 9, 2021, 10:37am UTC](https://discourse.slicer.org/t/lung-vessels-module/15415 "2021-01-09T10:37:23Z")\
**Posts on this page:** 14\
**Page:** 1

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**Author:** ![sergiGB](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sergigb/32/9403_2.png) [@sergiGB](https://discourse.slicer.org/u/sergiGB)\
**Post date:** [January 9, 2021, 10:37am UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/1 "2021-01-09T10:37:23Z")

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how can I get lung vessels? i want to get lung vessels without lung body  
Thanks !

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [January 9, 2021, 12:13pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/2 "2021-01-09T12:13:31Z")

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You need a lung CT with good vessel contrast. In Slicer, you can use the CTACardio demo data set for example. We found that the new “Local Threshold” function in Slicers´s “Segment Editor” works very well for extracting the pulmonary artery (blue) and vein (red). The demo dataset has a limited resolution, you will get more detailed vessels with higher resolutions.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/e/6e92ca0cf454e1c1b94d8bf1820538a60163fbba.jpeg)

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**Author:** ![sergiGB](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sergigb/32/9403_2.png) [@sergiGB](https://discourse.slicer.org/u/sergiGB)\
**Post date:** [January 9, 2021, 12:29pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/3 "2021-01-09T12:29:01Z")

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thank you very much !!!  
you are the best!

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [January 9, 2021, 1:18pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/4 "2021-01-09T13:18:26Z")

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Another way to achieve vessel segmentation is to use the “Grow from Seeds” function in the “Segment Editor”. More manual work, but you get additional airways and lung shadow. I usually define lungs, trachea and bifurcation, pulmonary artery, pulmonary vein and “Other” (paint a circle around the thorax in all axes) with a few paint strokes. Select “Grow from Seeds” and “Initialize”. Correct the results by adding a few paint strokes here and there. Press “Apply”. Go “Segments” and reduce the lung opacity.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/0/10012dc1e52dc128b3b248aa7901b8c4eab7f0fd.jpeg)

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**Author:** ![TMrt](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/tmrt/32/5432_2.png) [@TMrt](https://discourse.slicer.org/u/TMrt)\
**Post date:** [January 9, 2021, 1:19pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/5 "2021-01-09T13:19:45Z")

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Hello,

CIP Lung Segmenter, Flood Fill and Logical Operators Subtract were the only effects I used for these results. The scan slice thickness is .06 mm and most of the iv contrast was in the pulmonary artery. Hope this helps.

 ![Screenshot](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/8/c8b23574e181b896626c6c88fd983969d6db26ea.jpeg)

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**Author:** ![sergiGB](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sergigb/32/9403_2.png) [@sergiGB](https://discourse.slicer.org/u/sergiGB)\
**Post date:** [January 9, 2021, 4:06pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/6 "2021-01-09T16:06:19Z")

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gracias de nuevo! pero no le eche cuenta a su esposa jajajajaja

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [January 9, 2021, 4:30pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/7 "2021-01-09T16:30:49Z")

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Very interesting, could you post a short workflow ?

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**Author:** ![sergiGB](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sergigb/32/9403_2.png) [@sergiGB](https://discourse.slicer.org/u/sergiGB)\
**Post date:** [January 9, 2021, 4:33pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/8 "2021-01-09T16:33:35Z")

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Muchas gracias! lo voy a mirar y a ver que tal! gracias!

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**Author:** ![TMrt](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/tmrt/32/5432_2.png) [@TMrt](https://discourse.slicer.org/u/TMrt)\
**Post date:** [January 10, 2021, 4:46am UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/9 "2021-01-10T04:46:19Z")

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Sure Rudolf-I used version 4.13.0-2020-12-10 for the following workflow:

CIP\>Lung CT Segmenter  
Segment Editor\>additional segment painted over hilum/cardiac area  
Trachea replaced using Flood Filling for deeper segmentation  
PA and PV\> Flood Filling  
Editable Area\>Inside All Segments\>Allow Overlap  
Intensity Tolerance ranged anywhere from 50-120  
Logical Operators\>Subtraction

Thank you

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**Author:** ![Chuns\_SS](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chuns_ss/32/10007_2.png) [@Chuns\_SS](https://discourse.slicer.org/u/Chuns_SS)\
**Post date:** [June 17, 2021, 10:05am UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/10 "2021-06-17T10:05:55Z")

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Hello, I am relatively new to Slicer so can you explain in further detail exactly what you do when you start using the Segment Editor (“Segment Editor\>additional segment painted over hilum/cardiac area”  
) for the extracting the pulmonary vessells.  
Many thanks

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<div class="post-metadata">

**Author:** ![TMrt](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/tmrt/32/5432_2.png) [@TMrt](https://discourse.slicer.org/u/TMrt)\
**Post date:** [June 17, 2021, 12:02pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/11 "2021-06-17T12:02:01Z")

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![LUNG_VESSELS](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/0/00da528328774cfa9803561eeffd8782b223771d.jpeg)  
Hello-that refers to Segment\_1 circled in red. I found that by encompassing the entire area of interest, Flood Fill tool gave great results with minimal additional editing in this particular case. I experimented with this workflow omitting this step and found the segmentation differed. Hope that helps-Thank you

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<div class="post-metadata">

**Author:** ![Chuns\_SS](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chuns_ss/32/10007_2.png) [@Chuns\_SS](https://discourse.slicer.org/u/Chuns_SS)\
**Post date:** [June 17, 2021, 3:20pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/12 "2021-06-17T15:20:33Z")

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Thank-you, I’ll give that a try  
Sam

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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:** [February 27, 2024, 2:25pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/13 "2024-02-27T14:25:38Z")

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A post was split to a new topic: [Segment lungs, airways, pulmonary vessels](https://discourse.slicer.org/t/segment-lungs-airways-pulmonary-vessels/34570)

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**Author:** ![wwwww](https://avatars.discourse-cdn.com/v4/letter/w/db5fbb/32.png) [@wwwww](https://discourse.slicer.org/u/wwwww)\
**Post date:** [May 6, 2025, 12:15pm UTC](https://discourse.slicer.org/t/lung-vessels-module/15415/14 "2025-05-06T12:15:50Z")

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Could you post more detail steps about you method ,thank you very much!