# \#lungctanalyzer

**URL:** https://discourse.slicer.org/tag/lungctanalyzer/377.md

[Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md)

---

## [Analyzer Results in report Extended analysis (Table 2) all results are zero (0).](https://discourse.slicer.org/t/analyzer-results-in-report-extended-analysis-table-2-all-results-are-zero-0/47870)

<div class="topic-metadata">

**Author:** [@yilinguo256](https://discourse.slicer.org/u/yilinguo256)\
**Replies:** 1\
**Last updated:** [August 15, 2026, 11:46pm UTC](https://discourse.slicer.org/t/analyzer-results-in-report-extended-analysis-table-2-all-results-are-zero-0/47870 "2026-08-15T23:46:32Z")

</div>

@rbumm How to solve this problem? Thanks!

---

## [LungCTAnalyzer extension for lung CT segmentation and analysis for COVID-19 assessment](https://discourse.slicer.org/t/lungctanalyzer-extension-for-lung-ct-segmentation-and-analysis-for-covid-19-assessment/15006)

<div class="topic-metadata">

**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 52\
**Last updated:** [August 12, 2026, 7:29am UTC](https://discourse.slicer.org/t/lungctanalyzer-extension-for-lung-ct-segmentation-and-analysis-for-covid-19-assessment/15006 "2026-08-12T07:29:32Z")

</div>

New extension is added for lung CT segmentation and analysis for COVID-19 assessment. It is developed by Prof. Rudolf Bumm (@rbumm), a clinician in KSGR (Chur, Switzerland; with some help from Slicer core developers to p…

---

## [Image corruption when loading single DICOM CT slice as Scalar Volume](https://discourse.slicer.org/t/image-corruption-when-loading-single-dicom-ct-slice-as-scalar-volume/47388)

<div class="topic-metadata">

**Author:** [@Martina\_Caro95](https://discourse.slicer.org/u/Martina_Caro95)\
**Replies:** 1\
**Last updated:** [June 20, 2026, 8:01pm UTC](https://discourse.slicer.org/t/image-corruption-when-loading-single-dicom-ct-slice-as-scalar-volume/47388 "2026-06-20T20:01:17Z")

</div>

Hi everyone, I am currently working on building a retrospective clinical database, extracting body composition and radiomic data from thoracic CT scans specifically at the T4 level. Our historical workflow involved expo…

---

## [Lung CT Analyzer is not showing extended analysis results](https://discourse.slicer.org/t/lung-ct-analyzer-is-not-showing-extended-analysis-results/42010)

<div class="topic-metadata">

**Author:** [@LukasR](https://discourse.slicer.org/u/LukasR)\
**Replies:** 5\
**Last updated:** [September 9, 2025, 4:17pm UTC](https://discourse.slicer.org/t/lung-ct-analyzer-is-not-showing-extended-analysis-results/42010 "2025-09-09T16:17:21Z")

</div>

Hello, while using the extension Lung CT Analyzer I came across one problem. After I select “compute results” It’s not showing Lung CT analysis extended results neither in 3D Slicer nor PDF report. There are just zeros.…

---

## [Batch Processing with SlicerLungCTAnalyzer](https://discourse.slicer.org/t/batch-processing-with-slicerlungctanalyzer/42768)

<div class="topic-metadata">

**Author:** [@omegayen](https://discourse.slicer.org/u/omegayen)\
**Replies:** 2\
**Last updated:** [September 2, 2025, 11:08am UTC](https://discourse.slicer.org/t/batch-processing-with-slicerlungctanalyzer/42768 "2025-09-02T11:08:46Z")

</div>

Hi @rbumm thanks for your work. I am working with SlicerLungCTAnalyzer and having difficulty with batch processing with both the segmenter and analyzer. I reviewed the instructions here Batch processing with Lung CT Seg…

---

## [Same problem：AI segmentation with lung CT analyzer error](https://discourse.slicer.org/t/same-problem-ai-segmentation-with-lung-ct-analyzer-error/41956)

<div class="topic-metadata">

**Author:** [@Republique](https://discourse.slicer.org/u/Republique)\
**Replies:** 0\
**Last updated:** [March 4, 2025, 1:00pm UTC](https://discourse.slicer.org/t/same-problem-ai-segmentation-with-lung-ct-analyzer-error/41956 "2025-03-04T13:00:17Z")

</div>

Hi, I’ve been trying to use the Lung CT Analyzer extension with the AI segmentation ‘lung mask’, but I cannot get it to work. First,after I put a point in trachea and press apply button,I get a confirmation like:“PyTorc…

---

## [How should I cite LungCTAnalyzer](https://discourse.slicer.org/t/how-should-i-cite-lungctanalyzer/40557)

<div class="topic-metadata">

**Author:** [@Young-Chan2020](https://discourse.slicer.org/u/Young-Chan2020)\
**Replies:** 1\
**Last updated:** [December 9, 2024, 6:26pm UTC](https://discourse.slicer.org/t/how-should-i-cite-lungctanalyzer/40557 "2024-12-09T18:26:47Z")

</div>

I used the ‘lung ct segmenter’ extension to first segment the lung region and the result is used as the preprocessing result. However, I dont know the specific method that the extension used or the network was used. and…

---

## [LungCTAnalyzer for pneumonia + pleural effusion cases](https://discourse.slicer.org/t/lungctanalyzer-for-pneumonia-pleural-effusion-cases/38490)

<div class="topic-metadata">

**Author:** [@Daniel\_Lo](https://discourse.slicer.org/u/Daniel_Lo)\
**Replies:** 2\
**Last updated:** [October 25, 2024, 1:16pm UTC](https://discourse.slicer.org/t/lungctanalyzer-for-pneumonia-pleural-effusion-cases/38490 "2024-10-25T13:16:49Z")

</div>

Hi, i would like to ask how does it work with pneumonia + pleural effusion cases ?

---

## [Pneumothorax and CT analyzer](https://discourse.slicer.org/t/pneumothorax-and-ct-analyzer/38556)

<div class="topic-metadata">

**Author:** [@julian\_van\_Hoesel](https://discourse.slicer.org/u/julian_van_Hoesel)\
**Replies:** 4\
**Last updated:** [October 25, 2024, 1:08pm UTC](https://discourse.slicer.org/t/pneumothorax-and-ct-analyzer/38556 "2024-10-25T13:08:41Z")

</div>

Dear users/developers, I have been trying to use the LungCT analyzer for analyzing my segmentations of the lung, since i am interested in abnormalities in the lungs of primary spontaneous pneumothorax patients. I would …

---

## [Lung volume measurement](https://discourse.slicer.org/t/lung-volume-measurement/38489)

<div class="topic-metadata">

**Author:** [@Arash1](https://discourse.slicer.org/u/Arash1)\
**Replies:** 6\
**Last updated:** [September 25, 2024, 10:48pm UTC](https://discourse.slicer.org/t/lung-volume-measurement/38489 "2024-09-25T22:48:10Z")

</div>

Hello I wanted to use the LungCTAnalyzer for lung volume measurement. I followed the instructions provided on Github, but when I reviewed the results, the lung volume, and a few other values seemed wrong. On the Lo…

---

## [Lung lobe input segment is missing](https://discourse.slicer.org/t/lung-lobe-input-segment-is-missing/38540)

<div class="topic-metadata">

**Author:** [@Daniel\_Lo](https://discourse.slicer.org/u/Daniel_Lo)\
**Replies:** 4\
**Last updated:** [September 25, 2024, 8:09pm UTC](https://discourse.slicer.org/t/lung-lobe-input-segment-is-missing/38540 "2024-09-25T20:09:08Z")

</div>

how to solve this ? i was using AI mode how to solve GPU issue with macos system, is this model only linked to pytorchCUDA?

---

## [AI segmentation with lung CT analyzer error](https://discourse.slicer.org/t/ai-segmentation-with-lung-ct-analyzer-error/25678)

<div class="topic-metadata">

**Author:** [@MMdeB](https://discourse.slicer.org/u/MMdeB)\
**Replies:** 13\
**Last updated:** [September 25, 2024, 5:29am UTC](https://discourse.slicer.org/t/ai-segmentation-with-lung-ct-analyzer-error/25678 "2024-09-25T05:29:06Z")

</div>

Hi, I’ve been trying to use the Lung CT Analyzer extension with the AI segmentation ‘lung mask’, but I cannot get it to work. First, an error occurred that ‘torch was not present’, but I solved this by installing PyTorch…

---

## [Problem with AI lung segmentation in LungCTAnalyzer](https://discourse.slicer.org/t/problem-with-ai-lung-segmentation-in-lungctanalyzer/38447)

<div class="topic-metadata">

**Author:** [@alexjin](https://discourse.slicer.org/u/alexjin)\
**Replies:** 0\
**Last updated:** [September 18, 2024, 11:23pm UTC](https://discourse.slicer.org/t/problem-with-ai-lung-segmentation-in-lungctanalyzer/38447 "2024-09-18T23:23:28Z")

</div>

Hi, I have a similar error Command ‘\[’/Applications/Slicer.app/Contents/bin/…/bin/PythonSlicer’, ‘-m’, ‘pip’, ‘install’, 'https://github.com/JoHof/lungmask/archive/master.zip’\]’ returned non-zero exit status 1.

---

## [Using MONAI label to fine tune the vessel segmentation](https://discourse.slicer.org/t/using-monai-label-to-fine-tune-the-vessel-segmentation/34869)

<div class="topic-metadata">

**Author:** [@klc](https://discourse.slicer.org/u/klc)\
**Replies:** 6\
**Last updated:** [March 26, 2024, 8:47pm UTC](https://discourse.slicer.org/t/using-monai-label-to-fine-tune-the-vessel-segmentation/34869 "2024-03-26T20:47:21Z")

</div>

Hi, I have acheived robust and satisfactory segmentation result when using lungCTsegmenter before. However, if i use other samples(LIDC-IDRI dataset), most of the results have lung/vessel leaks. Should I use MON…

---

## [Lung CT Segmenter now supports 'lungmask' AI for lung and lobe segmentation](https://discourse.slicer.org/t/lung-ct-segmenter-now-supports-lungmask-ai-for-lung-and-lobe-segmentation/25081)

<div class="topic-metadata">

**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 30\
**Last updated:** [January 29, 2024, 3:47pm UTC](https://discourse.slicer.org/t/lung-ct-segmenter-now-supports-lungmask-ai-for-lung-and-lobe-segmentation/25081 "2024-01-29T15:47:03Z")

</div>

We have a new “experimental AI” option in Lung CT Segmenter for creating lung and lobe segmentations with minimal effort (one tracheal markup) on the fly. This feature involves Johannes Hofmanningers lungmask with permi…

---

## [Lung vessels model](https://discourse.slicer.org/t/lung-vessels-model/34743)

<div class="topic-metadata">

**Author:** [@Vikram](https://discourse.slicer.org/u/Vikram)\
**Replies:** 5\
**Last updated:** [March 12, 2024, 12:06pm UTC](https://discourse.slicer.org/t/lung-vessels-model/34743 "2024-03-12T12:06:54Z")

</div>

I segmented lung vessels model by using 3d slicer but the problem is that i want to print this model but vessels are connected to each other , what i can do there is any other way to do. please help me struck in my resea…

---

## [I can't use the lung lesion analyzer module of CIP](https://discourse.slicer.org/t/i-cant-use-the-lung-lesion-analyzer-module-of-cip/34398)

<div class="topic-metadata">

**Author:** [@gokcetaniyan](https://discourse.slicer.org/u/gokcetaniyan)\
**Replies:** 3\
**Last updated:** [February 21, 2024, 12:30pm UTC](https://discourse.slicer.org/t/i-cant-use-the-lung-lesion-analyzer-module-of-cip/34398 "2024-02-21T12:30:43Z")

</div>

I want to use the lung lesion analyzer module for lung nodule segmentation and analysis of nodule characteristics. I loaded my lung CT data. Then switched to the lung analyzer module, and put the fiducial on the nodule t…

---

## [The segmentation statistics with Lung Ct Anlizer does not show the results correctly.](https://discourse.slicer.org/t/the-segmentation-statistics-with-lung-ct-anlizer-does-not-show-the-results-correctly/34336)

<div class="topic-metadata">

**Author:** [@Marcelo\_Sanchez](https://discourse.slicer.org/u/Marcelo_Sanchez)\
**Replies:** 5\
**Last updated:** [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 "2024-02-18T22:53:06Z")

</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 …

---

## [How to get airways using LungCTAnalyzer](https://discourse.slicer.org/t/how-to-get-airways-using-lungctanalyzer/24102)

<div class="topic-metadata">

**Author:** [@ekmungi](https://discourse.slicer.org/u/ekmungi)\
**Replies:** 14\
**Last updated:** [February 12, 2024, 10:56pm UTC](https://discourse.slicer.org/t/how-to-get-airways-using-lungctanalyzer/24102 "2024-02-12T22:56:39Z")

</div>

This question is a continuation to an issue I posted on github. I am posting follow-up here. I performed the steps as suggested. However, as can be seen in the second picture. Somehow the lung lobes and airways are bein…

---

## [cant find LungCTanalyzer in module finder](https://discourse.slicer.org/t/cant-find-lungctanalyzer-in-module-finder/34241)

<div class="topic-metadata">

**Author:** [@evas](https://discourse.slicer.org/u/evas)\
**Replies:** 1\
**Last updated:** [February 11, 2024, 11:14am UTC](https://discourse.slicer.org/t/cant-find-lungctanalyzer-in-module-finder/34241 "2024-02-11T11:14:32Z")

</div>

Hello, I have 3D Slicer 5.6.1 and I want LungCTAnalyzer extension. I downloaded it in the Extensisons manager with the PyTorch. So I may have this after the restart in the menu. But I cant find it even in the modules and…

---

## [Lung segmentation with LungCTSegmenter](https://discourse.slicer.org/t/lung-segmentation-with-lungctsegmenter/32704)

<div class="topic-metadata">

**Author:** [@klc](https://discourse.slicer.org/u/klc)\
**Replies:** 12\
**Last updated:** [December 7, 2023, 12:06pm UTC](https://discourse.slicer.org/t/lung-segmentation-with-lungctsegmenter/32704 "2023-12-07T12:06:48Z")

</div>

@rbumm Dear Prof. Rudolf Bumm, Hi, I am using the LungCTSegmenter to segment the lungs with AIrwaySegmentation, Vessel Segmentation following this video: https://www.youtube.com/watch?v=bw1IaxVkOM4&ab\_channel=medec021 …

---

## [How to reduce lung segmentation time?](https://discourse.slicer.org/t/how-to-reduce-lung-segmentation-time/31799)

<div class="topic-metadata">

**Author:** [@mikiN](https://discourse.slicer.org/u/mikiN)\
**Replies:** 10\
**Last updated:** [October 30, 2023, 5:50pm UTC](https://discourse.slicer.org/t/how-to-reduce-lung-segmentation-time/31799 "2023-10-30T17:50:18Z")

</div>

When using the AI function of CTlungsegmentation (lungmask R231CovidWeb), segmentation takes more than 3 minutes. The spec of the PC used is RTX3050ti 4GB. What can I improve?

---

## [LUNGMASK in Lung CT segmenter EOF error](https://discourse.slicer.org/t/lungmask-in-lung-ct-segmenter-eof-error/31605)

<div class="topic-metadata">

**Author:** [@BM167](https://discourse.slicer.org/u/BM167)\
**Replies:** 2\
**Last updated:** [September 8, 2023, 6:42am UTC](https://discourse.slicer.org/t/lungmask-in-lung-ct-segmenter-eof-error/31605 "2023-09-08T06:42:12Z")

</div>

Lung CT segmenter I am trying to segment lung CT into lobes (Using lung mask LTRC lobes\_231). Using slicer 5.4.0. No matter how many times I reloaded lungmask file, there still seems to be a problem with a corruption o…

---

## [Exclude pleural effusion from CT lung segmentation (CT lung analyzer)](https://discourse.slicer.org/t/exclude-pleural-effusion-from-ct-lung-segmentation-ct-lung-analyzer/30506)

<div class="topic-metadata">

**Author:** [@mikiN](https://discourse.slicer.org/u/mikiN)\
**Replies:** 4\
**Last updated:** [September 6, 2023, 1:29pm UTC](https://discourse.slicer.org/t/exclude-pleural-effusion-from-ct-lung-segmentation-ct-lung-analyzer/30506 "2023-09-06T13:29:19Z")

</div>

Ask a question about lung segmentation. I am performing segmentation for chest CT using lungmask, but inevitably pleural effusion is also segmented together. I am now erasing the pleural fluid with an eraser for each th…

---

## [LungCTAnalyzer does not segment tumor/cancer nodule](https://discourse.slicer.org/t/lungctanalyzer-does-not-segment-tumor-cancer-nodule/31125)

<div class="topic-metadata">

**Author:** [@A\_By](https://discourse.slicer.org/u/A_By)\
**Replies:** 3\
**Last updated:** [August 13, 2023, 3:29pm UTC](https://discourse.slicer.org/t/lungctanalyzer-does-not-segment-tumor-cancer-nodule/31125 "2023-08-13T15:29:27Z")

</div>

I could not get LungCTAnalyzer to segmentate tumors. Is there any solution or other tools I can manage this? Thank You

---

## [SSL error when Lung CT segmenter is trying to instal light-the-torch](https://discourse.slicer.org/t/ssl-error-when-lung-ct-segmenter-is-trying-to-instal-light-the-torch/28774)

<div class="topic-metadata">

**Author:** [@wangjianmerci](https://discourse.slicer.org/u/wangjianmerci)\
**Replies:** 10\
**Last updated:** [August 2, 2023, 8:54am UTC](https://discourse.slicer.org/t/ssl-error-when-lung-ct-segmenter-is-trying-to-instal-light-the-torch/28774 "2023-08-02T08:54:45Z")

</div>

Operating system:Windows Slicer version:5.2.2 Hardware：R7-5800H+32G+3060laptop（6G） When I want use AI Lung lobe segmenter in 3dslicer 5.2.2, it asked to install light-the-torch. But error . \[Qt\] ctkSliderWidge…

---

## [I am having trouble with error codes when analyzing a series of images.](https://discourse.slicer.org/t/i-am-having-trouble-with-error-codes-when-analyzing-a-series-of-images/30494)

<div class="topic-metadata">

**Author:** [@mikiN](https://discourse.slicer.org/u/mikiN)\
**Replies:** 3\
**Last updated:** [July 10, 2023, 11:22pm UTC](https://discourse.slicer.org/t/i-am-having-trouble-with-error-codes-when-analyzing-a-series-of-images/30494 "2023-07-10T23:22:20Z")

</div>

I am analyzing images with CTlunganalyzer. When I try to analyze the second person’s data in succession, I get the error code “failed to compute results: ‘None Type’ object has no attribute ‘LookupValue’”. I have no choi…

---

## [about lungCTanalyzer Result](https://discourse.slicer.org/t/about-lungctanalyzer-result/30493)

<div class="topic-metadata">

**Author:** [@mikiN](https://discourse.slicer.org/u/mikiN)\
**Replies:** 2\
**Last updated:** [July 10, 2023, 2:49pm UTC](https://discourse.slicer.org/t/about-lungctanalyzer-result/30493 "2023-07-10T14:49:27Z")

</div>

I have a question about the result of LungCTanalyzer. Why do the Volmetric analysis (Table 1) and the Extended analysis (Table 2) have different values for Inflated? For example, in Table1, Inflated right is 560.077cm3…

---

## [Lung ROIs in LungCTAnalyzer](https://discourse.slicer.org/t/lung-rois-in-lungctanalyzer/30349)

<div class="topic-metadata">

**Author:** [@Marco\_Leali](https://discourse.slicer.org/u/Marco_Leali)\
**Replies:** 9\
**Last updated:** [July 3, 2023, 9:52am UTC](https://discourse.slicer.org/t/lung-rois-in-lungctanalyzer/30349 "2023-07-03T09:52:01Z")

</div>

Hello everybody. I am using LungCTAnalyzer for a research project: wonderful extension! However, I was wondering about which method LungCTAnalyzer uses to divide lungs into a ventral and a dorsal ROI: is it 50% of the lu…

---

## [LungCTAnalyzer error: NoneType oject has no attribute](https://discourse.slicer.org/t/lungctanalyzer-error-nonetype-oject-has-no-attribute/29616)

<div class="topic-metadata">

**Author:** [@Victor\_Shahen](https://discourse.slicer.org/u/Victor_Shahen)\
**Replies:** 1\
**Last updated:** [May 24, 2023, 2:43pm UTC](https://discourse.slicer.org/t/lungctanalyzer-error-nonetype-oject-has-no-attribute/29616 "2023-05-24T14:43:57Z")

</div>

Hi, I am using the Lung CT Segmenter add-on module and have had problems running it with imported CT data. Apologies, as I have never used the program before so please bear with me. I am struggling to get the module to …

[Next page](https://discourse.slicer.org/tag/lungctanalyzer/377.md?match_all_tags=true&page=1&tags%5B%5D=lungctanalyzer)