# Top

**URL:** https://discourse.slicer.org/top.md?page=4

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

**Page:** 5

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## [How to superimpose 2 stl files. Need help](https://discourse.slicer.org/t/how-to-superimpose-2-stl-files-need-help/45827)

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**Author:** [@DrSifali](https://discourse.slicer.org/u/DrSifali)\
**Replies:** 5\
**Last updated:** [January 20, 2026, 7:19pm UTC](https://discourse.slicer.org/t/how-to-superimpose-2-stl-files-need-help/45827 "2026-01-20T19:19:34Z")

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I need help on how to superimpose 2 stl files to analyze tooth movements

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## [PCA visualization parameters](https://discourse.slicer.org/t/pca-visualization-parameters/47141)

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**Author:** [@Stephan\_Collins](https://discourse.slicer.org/u/Stephan_Collins)\
**Replies:** 5\
**Last updated:** [May 27, 2026, 4:14pm UTC](https://discourse.slicer.org/t/pca-visualization-parameters/47141 "2026-05-27T16:14:55Z")

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Hi everyone, I am working with the GPA module from slicermorph and I noticed some changes which are most likely intentional and for good reasons but I need to ask. When you have a PCA showing segregation thanks to mult…

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## [Cleaning a model](https://discourse.slicer.org/t/cleaning-a-model/46197)

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**Author:** [@kvzwaag](https://discourse.slicer.org/u/kvzwaag)\
**Replies:** 5\
**Last updated:** [February 26, 2026, 12:55pm UTC](https://discourse.slicer.org/t/cleaning-a-model/46197 "2026-02-26T12:55:51Z")

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Hello! New user here, just getting my feet wet. I’m help an head and neck surgeon friend with some modeling to see if it can be used for surgical planning. I’m trying to isolate the mandible, and I’ve gotten close but…

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## [Improved python package installation: slicer.packaging](https://discourse.slicer.org/t/improved-python-package-installation-slicer-packaging/47088)

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**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 0\
**Last updated:** [May 19, 2026, 3:58pm UTC](https://discourse.slicer.org/t/improved-python-package-installation-slicer-packaging/47088 "2026-05-19T15:58:35Z")

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An improved python package installation experience is now available out of the box for extension developers: slicer.packaging. This feature was merged about a month ago and is available in the preview version of Slicer. …

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## [slicer runs out of memory with large  file.](https://discourse.slicer.org/t/slicer-runs-out-of-memory-with-large-file/46720)

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**Author:** [@mhsheikh25](https://discourse.slicer.org/u/mhsheikh25)\
**Replies:** 5\
**Last updated:** [April 15, 2026, 6:31pm UTC](https://discourse.slicer.org/t/slicer-runs-out-of-memory-with-large-file/46720 "2026-04-15T18:31:02Z")

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I have a Dell running 2 Platinum 8160 Xeons and 720GB ecc memory with a Nvidia 3090 24 GB video card and 3D slicer crashes on a large file with 300 Gb of memory remaining - error says that there isn’t enough memory. Is t…

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## [Brain MRI Gray Matter](https://discourse.slicer.org/t/brain-mri-gray-matter/47420)

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**Author:** [@bruce2647](https://discourse.slicer.org/u/bruce2647)\
**Replies:** 0\
**Last updated:** [June 22, 2026, 6:10am UTC](https://discourse.slicer.org/t/brain-mri-gray-matter/47420 "2026-06-22T06:10:07Z")

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Continuing the discussion from Brain MRI Gray Matter Segmentation: Fatima explained this really well. The point about thresholding not capturing cortical surface detail properly is probably the key issue here, especial…

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## [Trouble with the layout of the application](https://discourse.slicer.org/t/trouble-with-the-layout-of-the-application/45262)

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**Author:** [@kathw](https://discourse.slicer.org/u/kathw)\
**Replies:** 5\
**Last updated:** [November 28, 2025, 2:25pm UTC](https://discourse.slicer.org/t/trouble-with-the-layout-of-the-application/45262 "2025-11-28T14:25:00Z")

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Hi all! I just downloaded 3D Slicer on my Laptop, however the formatting is really weird. The icons and font size are huge, also whenever I open the program it is also huge and I have to scroll to reach the “full screen…

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## [Seeking Community Input on Upcoming trame‑slicer Applications](https://discourse.slicer.org/t/seeking-community-input-on-upcoming-trame-slicer-applications/46874)

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**Author:** [@Thibault\_Pelletier](https://discourse.slicer.org/u/Thibault_Pelletier)\
**Replies:** 2\
**Last updated:** [May 1, 2026, 4:02am UTC](https://discourse.slicer.org/t/seeking-community-input-on-upcoming-trame-slicer-applications/46874 "2026-05-01T04:02:59Z")

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Hi everyone! Following the discussions on the trame-slicer repo regarding Jupyter integration and first class citizen applications in trame-slicer we will be adding applications to the trame-slicer package starting the …

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## [Call for participation in the SOFA Week 2026](https://discourse.slicer.org/t/call-for-participation-in-the-sofa-week-2026/48553)

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**Author:** [@RafaelPalomar](https://discourse.slicer.org/u/RafaelPalomar)\
**Replies:** 0\
**Last updated:** [October 20, 2026, 2:02pm UTC](https://discourse.slicer.org/t/call-for-participation-in-the-sofa-week-2026/48553 "2026-10-20T14:02:23Z")

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:robot: This post was written with AI assistance. Dear Slicer Community, As many of you know, the 3D Slicer and SOFA communities have been working together on the SlicerSOFA extension, which brings the simulation cap…

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## [Free Webinar: Simplify Your Structural & Diffusion MRI Workflows](https://discourse.slicer.org/t/free-webinar-simplify-your-structural-diffusion-mri-workflows/47883)

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**Author:** [@Nick\_Bearup](https://discourse.slicer.org/u/Nick_Bearup)\
**Replies:** 0\
**Last updated:** [August 14, 2026, 6:20pm UTC](https://discourse.slicer.org/t/free-webinar-simplify-your-structural-diffusion-mri-workflows/47883 "2026-08-14T18:20:11Z")

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If you work with structural or diffusion MRI data, you’re probably already familiar with the range of software packages used for processing and analysis. On Tuesday, August 18th, from 12:00pm - 1:00pm ET, Kitware’s Medi…

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## [Reduce brush sphere resolution](https://discourse.slicer.org/t/reduce-brush-sphere-resolution/46365)

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**Author:** [@SANTIAGO\_PENDON\_MING](https://discourse.slicer.org/u/SANTIAGO_PENDON_MING)\
**Replies:** 6\
**Last updated:** [March 12, 2026, 7:29am UTC](https://discourse.slicer.org/t/reduce-brush-sphere-resolution/46365 "2026-03-12T07:29:48Z")

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The goal is to reduce the resolution of the Sphere Brush (i.e., make it more polyhedral). I assume this can be controlled through one or more parameters in the scripted module, but I have not found any settings related …

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## [In 3D Slicer, is it possible to simulate femur cut in real-time without iMSTK?](https://discourse.slicer.org/t/in-3d-slicer-is-it-possible-to-simulate-femur-cut-in-real-time-without-imstk/45543)

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**Author:** [@Vincent](https://discourse.slicer.org/u/Vincent)\
**Replies:** 6\
**Last updated:** [January 2, 2026, 5:20am UTC](https://discourse.slicer.org/t/in-3d-slicer-is-it-possible-to-simulate-femur-cut-in-real-time-without-imstk/45543 "2026-01-02T05:20:38Z")

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Hi, Support and development of iMSTK has been discontinued since May-02-2025. I would like to simulate femur cut in real-time with 3D Slicer. I have tried Mask volume effect, but it is not fast enough (the FPS is very …

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## [Heavy lag when displaying segmentations via Trame + TotalSegmentator](https://discourse.slicer.org/t/heavy-lag-when-displaying-segmentations-via-trame-totalsegmentator/46353)

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**Author:** [@Karuruychi](https://discourse.slicer.org/u/Karuruychi)\
**Replies:** 3\
**Last updated:** [March 4, 2026, 4:20am UTC](https://discourse.slicer.org/t/heavy-lag-when-displaying-segmentations-via-trame-totalsegmentator/46353 "2026-03-04T04:20:31Z")

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I am developing a web-based medical imaging viewer using Trame-slicer. I used TotalSegmentator to generate anatomical masks and then load these .nii.gz files into the Slicer scene for 3D visualization. Currently, I am l…

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## [Saving parameter preset in ANTs extension changes initialization value](https://discourse.slicer.org/t/saving-parameter-preset-in-ants-extension-changes-initialization-value/45993)

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**Author:** [@sulli419](https://discourse.slicer.org/u/sulli419)\
**Replies:** 8\
**Last updated:** [February 3, 2026, 12:40am UTC](https://discourse.slicer.org/t/saving-parameter-preset-in-ants-extension-changes-initialization-value/45993 "2026-02-03T00:40:14Z")

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In the General ANTs 3D slicer extension I noticed something rather odd. I can take one of the default parameter presets, say “QuickSyn”, change nothing, and click “save as preset”. The new .json preset saves in the cor…

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## [Urgent (Thesis project): Thresholding Impossible due to High Noise Levels in CT Reconstruction](https://discourse.slicer.org/t/urgent-thesis-project-thresholding-impossible-due-to-high-noise-levels-in-ct-reconstruction/46632)

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**Author:** [@Yaren\_Cetin](https://discourse.slicer.org/u/Yaren_Cetin)\
**Replies:** 4\
**Last updated:** [April 6, 2026, 4:11pm UTC](https://discourse.slicer.org/t/urgent-thesis-project-thresholding-impossible-due-to-high-noise-levels-in-ct-reconstruction/46632 "2026-04-06T16:11:19Z")

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To Whom It May Concern, I am experiencing a critical technical issue with my CT scan data that is preventing me from proceeding with my thesis analysis. The primary problem is that the Signal-to-Noise Ratio (SNR) is so…

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## [2026.03.31 Weekly Meeting](https://discourse.slicer.org/t/2026-03-31-weekly-meeting/46615)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 6\
**Last updated:** [April 7, 2026, 2:43am UTC](https://discourse.slicer.org/t/2026-03-31-weekly-meeting/46615 "2026-04-07T02:43:10Z")

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Tomorrow, we will be having our next weekly hangout at 10:00 AM ET until 11:00 AM ET. Anyone is welcome to join at this link: https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Please post to this thread to …

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## [Confidently incorrect posts appearing on forum](https://discourse.slicer.org/t/confidently-incorrect-posts-appearing-on-forum/46398)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 6\
**Last updated:** [March 4, 2026, 1:54am UTC](https://discourse.slicer.org/t/confidently-incorrect-posts-appearing-on-forum/46398 "2026-03-04T01:54:31Z")

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I have noticed that some confidently worded but incorrect responses to posts have been appearing on the forum recently, often with language suggestive of LLM generation. How should we handle those, as a community? If I…

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## [3D rendering makes whole screen glitch](https://discourse.slicer.org/t/3d-rendering-makes-whole-screen-glitch/46520)

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**Author:** [@naomic2](https://discourse.slicer.org/u/naomic2)\
**Replies:** 3\
**Last updated:** [June 5, 2026, 4:31pm UTC](https://discourse.slicer.org/t/3d-rendering-makes-whole-screen-glitch/46520 "2026-06-05T16:31:22Z")

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When I’m in Segmentation Editor and I press “Show 3D” the screen glitches between something like this image and normal. When I have all of my segments deselected with Show 3D on, the screen is also normal. I’m not rea…

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## [How to merge two CT series (Thorax + AbdoPelvis) into one continuous volume in Slicer 5.10](https://discourse.slicer.org/t/how-to-merge-two-ct-series-thorax-abdopelvis-into-one-continuous-volume-in-slicer-5-10/45058)

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**Author:** [@Julien\_Ancel](https://discourse.slicer.org/u/Julien_Ancel)\
**Replies:** 1\
**Last updated:** [November 12, 2025, 11:43pm UTC](https://discourse.slicer.org/t/how-to-merge-two-ct-series-thorax-abdopelvis-into-one-continuous-volume-in-slicer-5-10/45058 "2025-11-12T23:43:35Z")

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Hello everyone, I’m working on a quantitative imaging project and I have two CT series from the same patient: one Thorax series (Thorax MEDIASTIN 2.0 MPR ax) one AbdoPelvis series (PORTAL 2.0 MPR ax). Both are …

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## [Question regarding resample and segmentation](https://discourse.slicer.org/t/question-regarding-resample-and-segmentation/46193)

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**Author:** [@CS1](https://discourse.slicer.org/u/CS1)\
**Replies:** 5\
**Last updated:** [February 18, 2026, 3:02pm UTC](https://discourse.slicer.org/t/question-regarding-resample-and-segmentation/46193 "2026-02-18T15:02:45Z")

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I’m trying to understand how resampling may change my volume outcome that’s generated by segment statistic to mitigate error as I’m structuring my segmentation method, so I would greatly appreciate some input and help! B…

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## [3D Slicer won't open due to libssl on Ubuntu 24.04 LTS](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987)

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**Author:** [@dvijay](https://discourse.slicer.org/u/dvijay)\
**Replies:** 4\
**Last updated:** [May 11, 2026, 4:35pm UTC](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987 "2026-05-11T16:35:52Z")

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OS: Ubuntu 24.04.3 LTS Slicer: 5.10.0-linux-amd64 Installation method: cd ~/Downloads tar -xvf Slicer-5.10.0-linux-amd64.tar.gz sudo mv ./Slicer-5.10.0-linux-amd64 /opt/Slicer-5.10.0-linux-amd64 sudo apt-get install l…

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## [Airway segmentation of mouse lung](https://discourse.slicer.org/t/airway-segmentation-of-mouse-lung/47320)

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**Author:** [@ljuno](https://discourse.slicer.org/u/ljuno)\
**Replies:** 4\
**Last updated:** [June 13, 2026, 4:40pm UTC](https://discourse.slicer.org/t/airway-segmentation-of-mouse-lung/47320 "2026-06-13T16:40:18Z")

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Hello, I am working with 3D slicer in hopes to segment the airway of this mouse lung, acquired from lightsheet microscopy. I would like to segment the main airways, but not the alveoli (at least not yet - I am hoping to…

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## [How to suppress the Window not responding - force quit/wait error message in ubuntu?](https://discourse.slicer.org/t/how-to-suppress-the-window-not-responding-force-quit-wait-error-message-in-ubuntu/45516)

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**Author:** [@Victor\_Wayne](https://discourse.slicer.org/u/Victor_Wayne)\
**Replies:** 5\
**Last updated:** [December 18, 2025, 11:06pm UTC](https://discourse.slicer.org/t/how-to-suppress-the-window-not-responding-force-quit-wait-error-message-in-ubuntu/45516 "2025-12-18T23:06:05Z")

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Hello, In my extension I need to add a particular number of segmentation nodes that are ellipsoidal to the scene. After adding I am transforming them to a particular point one by one. But when the number of segmentatio…

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## [2026.02.17 Weekly Meeting](https://discourse.slicer.org/t/2026-02-17-weekly-meeting/46181)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 7\
**Last updated:** [February 23, 2026, 2:14pm UTC](https://discourse.slicer.org/t/2026-02-17-weekly-meeting/46181 "2026-02-23T14:14:36Z")

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Tomorrow, we will be having our next weekly hangout at 10:00 AM ET until 11:00 AM ET. Anyone is welcome to join at this link: https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Please post to this thread to …

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## [Scissors in Segment Editor module seriously lagged in Slicer 5.10.0](https://discourse.slicer.org/t/scissors-in-segment-editor-module-seriously-lagged-in-slicer-5-10-0/46364)

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**Author:** [@VincentYu](https://discourse.slicer.org/u/VincentYu)\
**Replies:** 3\
**Last updated:** [October 14, 2026, 7:46pm UTC](https://discourse.slicer.org/t/scissors-in-segment-editor-module-seriously-lagged-in-slicer-5-10-0/46364 "2026-10-14T19:46:03Z")

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Operating system: Windwos 11; Slicer version: 5.10.0 Recently I update Slicer from 5.8.1 to 5.10.0, and I found that sometimes the scissors in Segment Editor took very long computing time. After several small experimen…

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## [Automatic Extract Centerline with VMTK python (auto detect) from trachea segementation](https://discourse.slicer.org/t/automatic-extract-centerline-with-vmtk-python-auto-detect-from-trachea-segementation/46356)

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**Author:** [@hadrien\_calmet](https://discourse.slicer.org/u/hadrien_calmet)\
**Replies:** 0\
**Last updated:** [March 2, 2026, 11:09am UTC](https://discourse.slicer.org/t/automatic-extract-centerline-with-vmtk-python-auto-detect-from-trachea-segementation/46356 "2026-03-02T11:09:58Z")

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Hi everyone. Since several people seem to be working on this without a clear answer, I’m sharing my contribution in case it helps others in the community. Final main script: make\_clean\_centerlines\_zmax\_generic.py Cle…

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## [3D Slicer and trame-slicer framework](https://discourse.slicer.org/t/3d-slicer-and-trame-slicer-framework/45118)

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**Author:** [@claudiney](https://discourse.slicer.org/u/claudiney)\
**Replies:** 1\
**Last updated:** [November 17, 2025, 11:03pm UTC](https://discourse.slicer.org/t/3d-slicer-and-trame-slicer-framework/45118 "2025-11-17T23:03:02Z")

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Project Title: Building an Interactive 3D Slicer Tool for Global Clinical Training \[Quick Project Summary\] I’m looking for a specialized Python/Web developer to help me build a secure, cloud-hosted training tool using t…

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## [Measuring diameter of mouse lung airway](https://discourse.slicer.org/t/measuring-diameter-of-mouse-lung-airway/47396)

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**Author:** [@ljuno](https://discourse.slicer.org/u/ljuno)\
**Replies:** 5\
**Last updated:** [June 22, 2026, 4:31pm UTC](https://discourse.slicer.org/t/measuring-diameter-of-mouse-lung-airway/47396 "2026-06-22T16:31:37Z")

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Hi all, I have created this segmentation of part of the airways of a mouse lung. The images were generated from lightsheet microscopy and I used various tools to segment them - thresholding, painting, etc. I eventually …

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## [Testing dashboard shows no tests executed when filtering is used](https://discourse.slicer.org/t/testing-dashboard-shows-no-tests-executed-when-filtering-is-used/47144)

<div class="topic-metadata">

**Author:** [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Replies:** 5\
**Last updated:** [May 28, 2026, 2:12pm UTC](https://discourse.slicer.org/t/testing-dashboard-shows-no-tests-executed-when-filtering-is-used/47144 "2026-05-28T14:12:31Z")

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Hi all, I wanted to look at the test results of some extensions today. First I thought that the factory machine does not run any tests, because filtering on SlicerRT I saw this (and I know the extension has around 70 te…

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## [Segmentation Folders / Groups / Layers](https://discourse.slicer.org/t/segmentation-folders-groups-layers/47375)

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**Author:** [@LindenRB](https://discourse.slicer.org/u/LindenRB)\
**Replies:** 4\
**Last updated:** [June 19, 2026, 12:31am UTC](https://discourse.slicer.org/t/segmentation-folders-groups-layers/47375 "2026-06-19T00:31:56Z")

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Hi, Apologies in advance if this is obvious but I have tried to search for a solution for this but not found one. I am doing a lot of full body segmentations from CT imaging, and have been using Total Segmentator to sp…

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## [3D slicer with TotalSegmentator for abdominal CT](https://discourse.slicer.org/t/3d-slicer-with-totalsegmentator-for-abdominal-ct/46507)

<div class="topic-metadata">

**Author:** [@DiannaB](https://discourse.slicer.org/u/DiannaB)\
**Replies:** 3\
**Last updated:** [March 19, 2026, 9:07pm UTC](https://discourse.slicer.org/t/3d-slicer-with-totalsegmentator-for-abdominal-ct/46507 "2026-03-19T21:07:46Z")

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I am honestly don’t even know if this is possible, but I have the DICOM files from my husband’s CT scan (abdominal with contrast) and I would love to be able to 3D model them. He has an intussusception in his small bowel…

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## [Smallest specimen possible to image with Slicer Photogrammetry?](https://discourse.slicer.org/t/smallest-specimen-possible-to-image-with-slicer-photogrammetry/47522)

<div class="topic-metadata">

**Author:** [@imfeldts001](https://discourse.slicer.org/u/imfeldts001)\
**Replies:** 5\
**Last updated:** [July 10, 2026, 5:38pm UTC](https://discourse.slicer.org/t/smallest-specimen-possible-to-image-with-slicer-photogrammetry/47522 "2026-07-10T17:38:57Z")

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Greetings! My students and I have begun a project using Slicer Photogrammetry to create 3D models of songbird skulls from natural history collection in the area. The platform has worked well for us with the largest spec…

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## [Transform Source to Target 3D Model](https://discourse.slicer.org/t/transform-source-to-target-3d-model/45999)

<div class="topic-metadata">

**Author:** [@md.walten](https://discourse.slicer.org/u/md.walten)\
**Replies:** 7\
**Last updated:** [February 3, 2026, 10:52pm UTC](https://discourse.slicer.org/t/transform-source-to-target-3d-model/45999 "2026-02-03T22:52:26Z")

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Hello I am doing a research study with human bones where every bone has a little bit of different area das is marked and I would like to transform a source model exactly to a target bone so I can see the difference betw…

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## [Mensure tooth torque](https://discourse.slicer.org/t/mensure-tooth-torque/47140)

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**Author:** [@Kevin\_Nguyen](https://discourse.slicer.org/u/Kevin_Nguyen)\
**Replies:** 2\
**Last updated:** [June 3, 2026, 5:52am UTC](https://discourse.slicer.org/t/mensure-tooth-torque/47140 "2026-06-03T05:52:56Z")

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Hello! I’m a dentist currently working on a project where I’m measuring tooth torque, specifically the angle of the root. I’m looking for some guidance regarding which tools and measurement methods would be most appropr…

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## [Segment overlap versus 3D view](https://discourse.slicer.org/t/segment-overlap-versus-3d-view/45984)

<div class="topic-metadata">

**Author:** [@Hannnonk](https://discourse.slicer.org/u/Hannnonk)\
**Replies:** 3\
**Last updated:** [January 29, 2026, 5:38pm UTC](https://discourse.slicer.org/t/segment-overlap-versus-3d-view/45984 "2026-01-29T17:38:04Z")

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Two segments. 3D view when segments overlap, and larger segment (segment 1) is 50% transparent: 3D view when smaller segment is subtracted from larger segment (segment 1). Larger segment is 50% transparent: Why …

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## [Pytorch extension causes crash (Slicer 5.12.2 on Ubuntu 22.04)](https://discourse.slicer.org/t/pytorch-extension-causes-crash-slicer-5-12-2-on-ubuntu-22-04/47710)

<div class="topic-metadata">

**Author:** [@shai-ikko](https://discourse.slicer.org/u/shai-ikko)\
**Replies:** 5\
**Last updated:** [July 23, 2026, 8:58am UTC](https://discourse.slicer.org/t/pytorch-extension-causes-crash-slicer-5-12-2-on-ubuntu-22-04/47710 "2026-07-23T08:58:41Z")

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Hi, I’m having trouble with the PyTorch extension. On a fresh Slicer 5.12.2 installation, I install the extension, open it, and tell it to install pytorch using the default (automatic) backend. The installation supposed…

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## [TotalSegmentator install problem - pytorch version?](https://discourse.slicer.org/t/totalsegmentator-install-problem-pytorch-version/46167)

<div class="topic-metadata">

**Author:** [@mhopeng](https://discourse.slicer.org/u/mhopeng)\
**Replies:** 2\
**Last updated:** [February 19, 2026, 5:02am UTC](https://discourse.slicer.org/t/totalsegmentator-install-problem-pytorch-version/46167 "2026-02-19T05:02:56Z")

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Hello, I’ve tried to install TotalSegmentator on two macOS systems. When I try to run the sample data set, I get an error that seems to be related to the PyTorch version: ImportError: cannot import name ‘GradScaler’ fro…

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## [Segmentation color table generator](https://discourse.slicer.org/t/segmentation-color-table-generator/48330)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 0\
**Last updated:** [September 29, 2026, 2:33am UTC](https://discourse.slicer.org/t/segmentation-color-table-generator/48330 "2026-09-29T02:33:47Z")

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This is mostly for people who are using Slicer to segment non-human imaging data. If you want to use ontology mapped terms for your segmentations, I put together a small web-based tool that generates the table. Term Loo…

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## [TotalSegmentator finishes successfully but Slicer GUI freezes on macOS (M2-Pro Sequoia) after completion](https://discourse.slicer.org/t/totalsegmentator-finishes-successfully-but-slicer-gui-freezes-on-macos-m2-pro-sequoia-after-completion/45753)

<div class="topic-metadata">

**Author:** [@Lennart99](https://discourse.slicer.org/u/Lennart99)\
**Replies:** 2\
**Last updated:** [January 12, 2026, 6:46pm UTC](https://discourse.slicer.org/t/totalsegmentator-finishes-successfully-but-slicer-gui-freezes-on-macos-m2-pro-sequoia-after-completion/45753 "2026-01-12T18:46:24Z")

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Hi everyone, I am using the TotalSegmentator extension in slicer to segment MRI data. The data is successfully loaded and apparently segmented, however, before loading the segments into slicer and making them accessible…

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## [Workflow for segmenting many lesions as separate segments?](https://discourse.slicer.org/t/workflow-for-segmenting-many-lesions-as-separate-segments/47094)

<div class="topic-metadata">

**Author:** [@zhousy5310](https://discourse.slicer.org/u/zhousy5310)\
**Replies:** 5\
**Last updated:** [July 8, 2026, 8:56am UTC](https://discourse.slicer.org/t/workflow-for-segmenting-many-lesions-as-separate-segments/47094 "2026-07-08T08:56:49Z")

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Hi all, I’m currently working on NF1 cases using Slicer, and trying to find a better workflow. The main difficulty is not segmenting one lesion, but handling many separate lesions efficiently while keeping them as diff…

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## [Lung CT segmenter from Chest Imaging Platform bad quality image and segmentation](https://discourse.slicer.org/t/lung-ct-segmenter-from-chest-imaging-platform-bad-quality-image-and-segmentation/46229)

<div class="topic-metadata">

**Author:** [@Khaldoun](https://discourse.slicer.org/u/Khaldoun)\
**Replies:** 5\
**Last updated:** [February 21, 2026, 9:43pm UTC](https://discourse.slicer.org/t/lung-ct-segmenter-from-chest-imaging-platform-bad-quality-image-and-segmentation/46229 "2026-02-21T21:43:41Z")

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Problem report for 3D Slicer 5.10.0 win-amd64: \[please describe expected and actual behavior\] Since the last update of Total Segmentator the Lung CT segmenter module in Chest Imaging Platform is producing very blurry se…

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## [Kinect v2 \>OpenIGT\> 3D Slicer](https://discourse.slicer.org/t/kinect-v2-openigt-3d-slicer/45387)

<div class="topic-metadata">

**Author:** [@HazemShereef](https://discourse.slicer.org/u/HazemShereef)\
**Replies:** 5\
**Last updated:** [January 25, 2026, 1:38pm UTC](https://discourse.slicer.org/t/kinect-v2-openigt-3d-slicer/45387 "2026-01-25T13:38:14Z")

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Hello, pardon me if what i am asking is obvious, I am a student still learning. So i have been trying to add a support for Kinect V2 device to the Plus toolkit however it seems very hard for me because of the layers and…

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## [Undo Segment Changes in Extensions: MONAI label and nnInteractive](https://discourse.slicer.org/t/undo-segment-changes-in-extensions-monai-label-and-nninteractive/45427)

<div class="topic-metadata">

**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 4\
**Last updated:** [December 10, 2025, 6:00pm UTC](https://discourse.slicer.org/t/undo-segment-changes-in-extensions-monai-label-and-nninteractive/45427 "2025-12-10T18:00:44Z")

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I am trying to understand the undo behavior when editing a segment by hand in extensions such as MONAI label or nnInteractive. I am talking about using the scissors or largest island in the “segment module” in these ext…

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## [Data Load Failed](https://discourse.slicer.org/t/data-load-failed/46144)

<div class="topic-metadata">

**Author:** [@Daniel\_C](https://discourse.slicer.org/u/Daniel_C)\
**Replies:** 3\
**Last updated:** [February 13, 2026, 7:04pm UTC](https://discourse.slicer.org/t/data-load-failed/46144 "2026-02-13T19:04:42Z")

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Hi there, I encountered an error while trying to open a set of CT TIFF images. The error message only shows “load failed.” Is there any way to resolve this issue?

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## [Opacity cell - 5.12.2](https://discourse.slicer.org/t/opacity-cell-5-12-2/47652)

<div class="topic-metadata">

**Author:** [@BaptisteSVD](https://discourse.slicer.org/u/BaptisteSVD)\
**Replies:** 4\
**Last updated:** [July 20, 2026, 7:00am UTC](https://discourse.slicer.org/t/opacity-cell-5-12-2/47652 "2026-07-20T07:00:52Z")

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Hi, In Slicer 5.12.2, the per-segment opacity cell in the Segmentations module is no longer editable by mouse click or double-click. Editing only works after pressing F2. Is this intentional or a regression?

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## [BQML to SUV (how to do automatically while loading DICOM data)](https://discourse.slicer.org/t/bqml-to-suv-how-to-do-automatically-while-loading-dicom-data/46583)

<div class="topic-metadata">

**Author:** [@Divi](https://discourse.slicer.org/u/Divi)\
**Replies:** 4\
**Last updated:** [April 2, 2026, 2:40pm UTC](https://discourse.slicer.org/t/bqml-to-suv-how-to-do-automatically-while-loading-dicom-data/46583 "2026-04-02T14:40:48Z")

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I’m trying to do segmentation and quantification, but my values are too high (maybe its BQML) and I need it to be SUV values. Could you help me on how to do this?

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## [Extension manager hangs and crashes Slicer 5.10 today](https://discourse.slicer.org/t/extension-manager-hangs-and-crashes-slicer-5-10-today/47452)

<div class="topic-metadata">

**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 3\
**Last updated:** [June 25, 2026, 6:14pm UTC](https://discourse.slicer.org/t/extension-manager-hangs-and-crashes-slicer-5-10-today/47452 "2026-06-25T18:14:52Z")

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I am using Slicer 5.10 on Windows, and wanted to add the model to model distance extension today. However, when I open the Extension Manager, I get a blank window and spinning waiting cursor for an indefinite period, ap…

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## [Abdominal Muscle Segmentation any better ways to approach this?](https://discourse.slicer.org/t/abdominal-muscle-segmentation-any-better-ways-to-approach-this/46206)

<div class="topic-metadata">

**Author:** [@CS1](https://discourse.slicer.org/u/CS1)\
**Replies:** 3\
**Last updated:** [July 14, 2026, 4:00pm UTC](https://discourse.slicer.org/t/abdominal-muscle-segmentation-any-better-ways-to-approach-this/46206 "2026-07-14T16:00:34Z")

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Hello there, I’ve been using total segmentator, 3D slicer for the past few months trying to get the volumetric data for body composition of the lumbar region. I have to say that it is a great resource and gives you a de…

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## [Tooth segmentation in 2D panoramic dental radiographs](https://discourse.slicer.org/t/tooth-segmentation-in-2d-panoramic-dental-radiographs/47455)

<div class="topic-metadata">

**Author:** [@DrPierreGAUSSEN](https://discourse.slicer.org/u/DrPierreGAUSSEN)\
**Replies:** 1\
**Last updated:** [June 26, 2026, 8:09am UTC](https://discourse.slicer.org/t/tooth-segmentation-in-2d-panoramic-dental-radiographs/47455 "2026-06-26T08:09:06Z")

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Je suis à la recherche d’un expert pour le développement rapide d’un module automatique de segmentation par dents d’une radiographie panoramique dentaire 2D. Dr Pierre GAUSSEN Sarl AGATHA

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## [Correct workflow for loading 4D CT cardiac data](https://discourse.slicer.org/t/correct-workflow-for-loading-4d-ct-cardiac-data/48121)

<div class="topic-metadata">

**Author:** [@arumiat](https://discourse.slicer.org/u/arumiat)\
**Replies:** 4\
**Last updated:** [September 14, 2026, 8:41am UTC](https://discourse.slicer.org/t/correct-workflow-for-loading-4d-ct-cardiac-data/48121 "2026-09-14T08:41:53Z")

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Hi Slicer Community, I have a .nii file which is a 4D-gated cardiac CT but I am struggling to load it in Slicer in a way whereby I can watch the heart beating. Is there a specific workflow I need to follow. So far I ha…

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