# The segmentation statistics with Lung Ct Anlizer does not show the results correctly.

**URL:** <https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336>\
**Category:** Support\
**Tags:** lungctanalyzer\
**Created:** [February 14, 2024, 11:07pm UTC](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336 "2024-02-14T23:07:54Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Marcelo\_Sanchez](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/marcelo_sanchez/32/69344_2.png) [@Marcelo\_Sanchez](https://discourse.slicer.org/u/Marcelo_Sanchez)\
**Post date:** [February 14, 2024, 11:07pm UTC](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336/1 "2024-02-14T23:07:54Z")

</div>

I recently installed 3d slicer 5.6.1 and noticed that the LungCTAnlizar results are not displaying well, the lung segmentation data is exactly the same, so, in the different lung segments shows the same results, how can I correct this data, what am I doing wrong?

 ![test](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/1/d1b8349802bd1e17f201b5864cd1d7f3c812c569.jpeg)

---

<div class="post-metadata">

**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:** [February 15, 2024, 12:07pm UTC](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336/2 "2024-02-15T12:07:02Z")

</div>

This looks like a bug, I will check the sources and keep you updated …

---

<div class="post-metadata">

**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:** [February 15, 2024, 3:47pm UTC](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336/3 "2024-02-15T15:47:51Z")

</div>

Ok it is not a bug, but a weakness of LungCTAnalyzer which runs a “Lobe analysis” when checked even on a lung segmentation with only two lungs and no lobes segmented.  
This is the reason why you get the “false” results.  
Please use one of the AI tools that are offered in LungCTSegmenter (lungmaskLCRTLobes or Totalsegmentator basic) to create lobe segmentations and then run LungCTAnalyzer again.  
We will implement a detection of the missing lobe segmentatons in LCTA to avoid confusion to the user.  
Thank you for the report !

---

<div class="post-metadata">

**Author:** ![Marcelo\_Sanchez](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/marcelo_sanchez/32/69344_2.png) [@Marcelo\_Sanchez](https://discourse.slicer.org/u/Marcelo_Sanchez)\
**Post date:** [February 18, 2024, 4:19pm UTC](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336/4 "2024-02-18T16:19:24Z")

</div>

Dear,

Thank you very much for your quick answer, I am sending you a picture with the results after the analysis with Lung CT Analyzer, I did it after following your advice.

Regards

 ![LCTA](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/6/664dc172c83a199c0046912b0b8118d666de13da.jpeg)

---

<div class="post-metadata">

**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:** [February 18, 2024, 4:23pm UTC](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336/5 "2024-02-18T16:23:44Z")

</div>

Does this look ok now? Please confirm …

---

<div class="post-metadata">

**Author:** ![Marcelo\_Sanchez](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/marcelo_sanchez/32/69344_2.png) [@Marcelo\_Sanchez](https://discourse.slicer.org/u/Marcelo_Sanchez)\
**Post date:** [February 18, 2024, 10:53pm UTC](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336/6 "2024-02-18T22:53:06Z")

</div>

Im sorry, yes, it works perfect and the analysis is very good.

Thanks again.

Marcelo.