# Total segmentor: ribs are incomplete

**URL:** <https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [June 25, 2024, 1:15am UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994 "2024-06-25T01:15:00Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Dex2046](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dex2046/32/65593_2.png) [@Dex2046](https://discourse.slicer.org/u/Dex2046)\
**Post date:** [June 25, 2024, 1:15am UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/1 "2024-06-25T01:15:00Z")

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hi，everyone  
I am using total segmentor to get all the bones from the whole body CT, but I found the ribs are imcomplete

 ![0d1a89a494ddc78cc82e388d2d87ce2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/b/eb3cc222223f5b9a8cadf32aa3a07f5fba517d63.png)  
 ![09d8d074b8df0f2474259d18e159a2d](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/4/14e445d3362633fb948254aa47f786c3e4aa1bb1.png)  
How could I solve this problem?

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**Author:** ![Matteboo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/matteboo/32/66548_2.png) [@Matteboo](https://discourse.slicer.org/u/Matteboo)\
**Post date:** [June 25, 2024, 2:49pm UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/2 "2024-06-25T14:49:31Z")

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Hello,  
Two ideas:  
-Are you running total segmentator on fast mode ? that could explain the loss of some details  
-Is the segmentation correct on the slice view ? Maybe it’s a 3D visualisation issue

Also, the segmentation looks good enought to be corrected with some closing/opening on the spine and existing rib segmentation

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**Author:** ![Dex2046](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dex2046/32/65593_2.png) [@Dex2046](https://discourse.slicer.org/u/Dex2046)\
**Post date:** [June 26, 2024, 12:32am UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/3 "2024-06-26T00:32:17Z")

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thank you for help  
1.standard mode was used in segmentation  
2.segmentation missing were obvious on slice view  
😢

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [June 26, 2024, 12:00pm UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/4 "2024-06-26T12:00:30Z")

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As far as I’ve seen that gap is a limitation that happens consistently. Maybe it’ll be addressed in future versions.

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**Author:** ![Dex2046](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dex2046/32/65593_2.png) [@Dex2046](https://discourse.slicer.org/u/Dex2046)\
**Post date:** [June 27, 2024, 2:51am UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/5 "2024-06-27T02:51:11Z")

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Thank you 😀，waiting for new versions

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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:** [June 27, 2024, 3:15am UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/6 "2024-06-27T03:15:14Z")

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I would recommend to try other segmentation models (e.g., MONAI Auto3DSeg extension). If all models have this error then most likely the models need to be improved with better training data. If this is important for you, then you don’t have to wait for someone else to do the job, you can contribute these improvements yourself. You can contact the maintainers of these AI segmentation models to check if they are planning to work on this and if they would be willing to accept training data improvements from you (or if you can help them in any other way to improve rib segmentation).

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**Author:** ![Dex2046](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dex2046/32/65593_2.png) [@Dex2046](https://discourse.slicer.org/u/Dex2046)\
**Post date:** [June 27, 2024, 3:21am UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/7 "2024-06-27T03:21:38Z")

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Thank you for your suggestion，I’ll try

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**Author:** ![tsinesh](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/tsinesh/32/16670_2.png) [@tsinesh](https://discourse.slicer.org/u/tsinesh)\
**Post date:** [June 28, 2024, 11:38am UTC](https://discourse.slicer.org/t/total-segmentor-ribs-are-incomplete/36994/8 "2024-06-28T11:38:45Z")

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Isn’t that the area where there is naturally no bone but rib cartilage?