# Top

**URL:** https://discourse.slicer.org/top.md?page=14

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

**Page:** 15

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## [Automated dental tools are not working but dental segmentator is working. ](https://discourse.slicer.org/t/automated-dental-tools-are-not-working-but-dental-segmentator-is-working/47577)

<div class="topic-metadata">

**Author:** [@Sum123](https://discourse.slicer.org/u/Sum123)\
**Replies:** 0\
**Last updated:** [July 8, 2026, 11:08am UTC](https://discourse.slicer.org/t/automated-dental-tools-are-not-working-but-dental-segmentator-is-working/47577 "2026-07-08T11:08:25Z")

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The automated dental tools are not working, however, Dental segmentator is working well. I have downloaded the latest version, 5.12. I need to work on the following tools: ALI, AMASSS, V FACE, CLIC, AREG, AUTOCROP 3D…

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## [How to find the calcification?](https://discourse.slicer.org/t/how-to-find-the-calcification/47033)

<div class="topic-metadata">

**Author:** [@liam26](https://discourse.slicer.org/u/liam26)\
**Replies:** 0\
**Last updated:** [May 14, 2026, 6:38pm UTC](https://discourse.slicer.org/t/how-to-find-the-calcification/47033 "2026-05-14T18:38:20Z")

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Hi, I’m looking for some help with finding arterial calcification. I’m working from MRIs, looking for illiac, portal, vena cava, etc. My current process looks something like: Subtract all vertebrae from the artery (In c…

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## [Updates to slicer-packages.kitware.com in progress](https://discourse.slicer.org/t/updates-to-slicer-packages-kitware-com-in-progress/48518)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [October 14, 2026, 9:21pm UTC](https://discourse.slicer.org/t/updates-to-slicer-packages-kitware-com-in-progress/48518 "2026-10-14T21:21:47Z")

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The Kitware team is applying updates to the package server infrastructure, which will result in intermittent downtime of the package server, and (worst case) may cause issues with uploading packages for the upcoming nigh…

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## [Segmenting only within a ROI](https://discourse.slicer.org/t/segmenting-only-within-a-roi/46129)

<div class="topic-metadata">

**Author:** [@jamie.miller.phd](https://discourse.slicer.org/u/jamie.miller.phd)\
**Replies:** 0\
**Last updated:** [February 12, 2026, 7:05am UTC](https://discourse.slicer.org/t/segmenting-only-within-a-roi/46129 "2026-02-12T07:05:17Z")

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Hi team, I am a novice user of 3D Slicer and trying to upskill. I have MRI images of the upper airway and I am trying to segment out only the airways (nasal and oral cavities). I have been using the threshold masking to …

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## [PW Meeting Jan 13](https://discourse.slicer.org/t/pw-meeting-jan-13/45758)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [January 12, 2026, 8:31pm UTC](https://discourse.slicer.org/t/pw-meeting-jan-13/45758 "2026-01-12T20:31:30Z")

</div>

Dear Project Week community, The next project week preparation meeting will be next tomorrow, Tuesday, Jan 13, at 10:00 AM ET. (2026-01-13T15:00:00Z (UTC)) Here is the schedule of high-level discussion topics for the n…

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## [Bugs with ROI - Red panes or panes with text](https://discourse.slicer.org/t/bugs-with-roi-red-panes-or-panes-with-text/45788)

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**Author:** [@marklumberjack](https://discourse.slicer.org/u/marklumberjack)\
**Replies:** 1\
**Last updated:** [January 15, 2026, 11:11pm UTC](https://discourse.slicer.org/t/bugs-with-roi-red-panes-or-panes-with-text/45788 "2026-01-15T23:11:09Z")

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I’m new here so I’m not sure if I’m even using everything correctly, but I’m experiencing some bugs when using ROI clipping on an image stack volume.

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## [Segment Not working](https://discourse.slicer.org/t/segment-not-working/47659)

<div class="topic-metadata">

**Author:** [@Reza\_ashtiani](https://discourse.slicer.org/u/Reza_ashtiani)\
**Replies:** 0\
**Last updated:** [July 17, 2026, 3:25pm UTC](https://discourse.slicer.org/t/segment-not-working/47659 "2026-07-17T15:25:39Z")

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Dear friends I am new on program. When I want to segment my CBCT, it simply doesn’t work. I’m using CUDA. The first step — loading the DICOM file — works fine, but the dental segmentation process doesn’t proceed be…

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## [Converting Radial Artery from DICOM ( CT files) and Segmentation using slicer manually and using slicer AI 3d segmentation for simulation](https://discourse.slicer.org/t/converting-radial-artery-from-dicom-ct-files-and-segmentation-using-slicer-manually-and-using-slicer-ai-3d-segmentation-for-simulation/47603)

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**Author:** [@Chandana](https://discourse.slicer.org/u/Chandana)\
**Replies:** 0\
**Last updated:** [July 13, 2026, 3:22am UTC](https://discourse.slicer.org/t/converting-radial-artery-from-dicom-ct-files-and-segmentation-using-slicer-manually-and-using-slicer-ai-3d-segmentation-for-simulation/47603 "2026-07-13T03:22:57Z")

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Operating system: Windows 11 Slicer version: 5.9 Expected behavior: clear radial artery stl Actual behavior: unclear lump with bone

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## [Next PW Prep meeting Tues May 26 at 10 AM ET](https://discourse.slicer.org/t/next-pw-prep-meeting-tues-may-26-at-10-am-et/47113)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 21, 2026, 8:37pm UTC](https://discourse.slicer.org/t/next-pw-prep-meeting-tues-may-26-at-10-am-et/47113 "2026-05-21T20:37:05Z")

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Dear Project Week community, The next project week preparation meeting will be next Tuesday, May 26, at 10:00 AM ET. (2026-05-26T14:00:00Z (UTC)) If you are interested in discussing a possible project, please reply to …

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## [CTKResEdit unable to start](https://discourse.slicer.org/t/ctkresedit-unable-to-start/45772)

<div class="topic-metadata">

**Author:** [@rphellan2210](https://discourse.slicer.org/u/rphellan2210)\
**Replies:** 1\
**Last updated:** [January 14, 2026, 12:56am UTC](https://discourse.slicer.org/t/ctkresedit-unable-to-start/45772 "2026-01-14T00:56:42Z")

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Hello, I am trying to build Slicer and the process requires running CTKResEdit.exe to update some icons, but CTKResEdit fails and it leads to the error below. C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\MSBu…

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## [Need CT scans with leksell localizer for validating the transformation to leksell frame co-ordinates in my extension](https://discourse.slicer.org/t/need-ct-scans-with-leksell-localizer-for-validating-the-transformation-to-leksell-frame-co-ordinates-in-my-extension/48116)

<div class="topic-metadata">

**Author:** [@Victor\_Wayne](https://discourse.slicer.org/u/Victor_Wayne)\
**Replies:** 0\
**Last updated:** [September 11, 2026, 5:34am UTC](https://discourse.slicer.org/t/need-ct-scans-with-leksell-localizer-for-validating-the-transformation-to-leksell-frame-co-ordinates-in-my-extension/48116 "2026-09-11T05:34:11Z")

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Hi, I am working on an extension in which I have to convert the volumes from RAS co-ordinate system to leksell frame’s XYZ co-ordinate system. I need test data validate my transformation logic. Is there any place where …

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## [HighRes segmentation in TotalSegmentator](https://discourse.slicer.org/t/highres-segmentation-in-totalsegmentator/47345)

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**Author:** [@jordy86](https://discourse.slicer.org/u/jordy86)\
**Replies:** 0\
**Last updated:** [June 15, 2026, 12:40pm UTC](https://discourse.slicer.org/t/highres-segmentation-in-totalsegmentator/47345 "2026-06-15T12:40:22Z")

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I noticed some test high res models in the TotalSegmentator github a while back but now they are gone. Are there any plans to introduce higher resolution segmentation similar to the highresh heart chambers available now? …

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## [Experiment auto-optimize volume rendering](https://discourse.slicer.org/t/experiment-auto-optimize-volume-rendering/46711)

<div class="topic-metadata">

**Author:** [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Replies:** 0\
**Last updated:** [April 11, 2026, 12:42am UTC](https://discourse.slicer.org/t/experiment-auto-optimize-volume-rendering/46711 "2026-04-11T00:42:06Z")

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Hi, Seeing this post today: Sharing custom presets - #4 by muratmaga I tried to make a script that calls Slicer, screenshots a 3D picture of the CTChest data set with a custom property and tries to optimize the custom …

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## [Fedora 43 build error (curl / libzstd)](https://discourse.slicer.org/t/fedora-43-build-error-curl-libzstd/45836)

<div class="topic-metadata">

**Author:** [@codeling](https://discourse.slicer.org/u/codeling)\
**Replies:** 0\
**Last updated:** [January 19, 2026, 10:34pm UTC](https://discourse.slicer.org/t/fedora-43-build-error-curl-libzstd/45836 "2026-01-19T22:34:59Z")

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On Fedora 43, I get this error when building slicer: \[20/2591\] Linking CXX shared library bin/libRemoteIO.so FAILED: \[code=1\] bin/libRemoteIO.so : && /usr/bin/c++ -fPIC -Wall -Wextra -Wpointer-arith -Winvalid-pch -Wcas…

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## [PW Meeting Jan 6](https://discourse.slicer.org/t/pw-meeting-jan-6/45680)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [January 5, 2026, 9:31pm UTC](https://discourse.slicer.org/t/pw-meeting-jan-6/45680 "2026-01-05T21:31:47Z")

</div>

Dear Project Week community, The next project week preparation meeting will be next Tomorrow, Tuesday, Jan 6, at 10:00 AM ET. (2026-01-06T15:00:00Z (UTC)) Here is the schedule of high-level discussion topics for the ne…

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## [Volume Sequence broken in 5.12?](https://discourse.slicer.org/t/volume-sequence-broken-in-5-12/48692)

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**Author:** [@coffee](https://discourse.slicer.org/u/coffee)\
**Replies:** 1\
**Last updated:** [November 4, 2026, 6:19pm UTC](https://discourse.slicer.org/t/volume-sequence-broken-in-5-12/48692 "2026-11-04T18:19:57Z")

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Hello, I’m working with a 3D+time CT DICOM dataset (which unfortunately I cannot upload on account of it being patient data) in Windows, and in versions 5.12.0 and 5.12.4 I do not see the Volume Sequence show up as an o…

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## [How can I calculate and visualize displacement vectors of the heart and lungs between Normal Breathing and DIBH](https://discourse.slicer.org/t/how-can-i-calculate-and-visualize-displacement-vectors-of-the-heart-and-lungs-between-normal-breathing-and-dibh/46995)

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**Author:** [@zahra\_Tabasi](https://discourse.slicer.org/u/zahra_Tabasi)\
**Replies:** 0\
**Last updated:** [May 12, 2026, 6:20pm UTC](https://discourse.slicer.org/t/how-can-i-calculate-and-visualize-displacement-vectors-of-the-heart-and-lungs-between-normal-breathing-and-dibh/46995 "2026-05-12T18:20:03Z")

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Hello everyone, I am currently conducting a research study involving patients with unilateral left-sided breast cancer undergoing radiotherapy. The purpose of my study is to compare Normal Breathing (free breathing) and…

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## [Slicer 5.12.0 Extension Manager](https://discourse.slicer.org/t/slicer-5-12-0-extension-manager/47474)

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**Author:** [@kareem\_abdelaziz](https://discourse.slicer.org/u/kareem_abdelaziz)\
**Replies:** 0\
**Last updated:** [June 26, 2026, 9:47pm UTC](https://discourse.slicer.org/t/slicer-5-12-0-extension-manager/47474 "2026-06-26T21:47:10Z")

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Slicer version 5.12.0 extension manager not working , do i need ot manually install extensions from source ? I saw that the VR module openxr backend now support Passthorugh camera for the Meta Quest 3 and wanted to try …

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## [plugin specialized in segmenting layers in the abdominal wall](https://discourse.slicer.org/t/plugin-specialized-in-segmenting-layers-in-the-abdominal-wall/47427)

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**Author:** [@arcsurgery](https://discourse.slicer.org/u/arcsurgery)\
**Replies:** 0\
**Last updated:** [June 22, 2026, 12:41pm UTC](https://discourse.slicer.org/t/plugin-specialized-in-segmenting-layers-in-the-abdominal-wall/47427 "2026-06-22T12:41:07Z")

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Is there a plugin that can segment the layers in the abdominal wall?

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## [Bump minimum CMake version to 3.28.1?](https://discourse.slicer.org/t/bump-minimum-cmake-version-to-3-28-1/47247)

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**Author:** [@dzenanz](https://discourse.slicer.org/u/dzenanz)\
**Replies:** 0\
**Last updated:** [June 5, 2026, 2:35pm UTC](https://discourse.slicer.org/t/bump-minimum-cmake-version-to-3-28-1/47247 "2026-06-05T14:35:30Z")

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CMake 3.28.1 shipped with Ubuntu 24.04 LTS. I suggest Slicer bumps it to that version after 5.12 is tagged. We are strongly considering the same bump in ITK. Please pitch in with your opinions.

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## [Steps for Glioma Perfusion (CBV) and Diffusion (ADC) Analysis](https://discourse.slicer.org/t/steps-for-glioma-perfusion-cbv-and-diffusion-adc-analysis/46880)

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**Author:** [@Edvinas\_Chaleckas](https://discourse.slicer.org/u/Edvinas_Chaleckas)\
**Replies:** 0\
**Last updated:** [April 30, 2026, 5:53pm UTC](https://discourse.slicer.org/t/steps-for-glioma-perfusion-cbv-and-diffusion-adc-analysis/46880 "2026-04-30T17:53:11Z")

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Hello, I am a new 3D Slicer user and I am working on a project to analyze 3D glioma datasets. My goal is to calculate: Perfusion parameters, specifically Cerebral Blood Volume (CBV). Diffusion parameters, specific…

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## ["Editable Area" for segmentation on multiple aspects does not work as intended](https://discourse.slicer.org/t/editable-area-for-segmentation-on-multiple-aspects-does-not-work-as-intended/46563)

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**Author:** [@Silver\_Fish](https://discourse.slicer.org/u/Silver_Fish)\
**Replies:** 0\
**Last updated:** [March 25, 2026, 3:57pm UTC](https://discourse.slicer.org/t/editable-area-for-segmentation-on-multiple-aspects-does-not-work-as-intended/46563 "2026-03-25T15:57:15Z")

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I’ve been founding out that masking(Editable Area) is not working for multiple aspects. Adjusting models from “grow from seed” using Paint tool: When clicking Editable Area - Inside , I’m not able to Paint anything Vi…

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## [Fat Segmentation (SAT, VAT)](https://discourse.slicer.org/t/fat-segmentation-sat-vat/47940)

<div class="topic-metadata">

**Author:** [@Sahar\_KARIMI](https://discourse.slicer.org/u/Sahar_KARIMI)\
**Replies:** 0\
**Last updated:** [August 20, 2026, 7:05pm UTC](https://discourse.slicer.org/t/fat-segmentation-sat-vat/47940 "2026-08-20T19:05:35Z")

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Hello, I am doing Fat segmentation for Subcutaneous Adipose Tissue (SAT) and Visceral Adipose Tissue(VAT) with 3D-slicer using Thresholding and Grow from seeds modules. HU for both are considered between -190 to -30. H…

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## [Exporting DICOM perfusion/cine as NIfTI gives only 1 dynamic (but Slicer shows 150 frames)](https://discourse.slicer.org/t/exporting-dicom-perfusion-cine-as-nifti-gives-only-1-dynamic-but-slicer-shows-150-frames/47163)

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**Author:** [@Demy](https://discourse.slicer.org/u/Demy)\
**Replies:** 0\
**Last updated:** [May 28, 2026, 7:37pm UTC](https://discourse.slicer.org/t/exporting-dicom-perfusion-cine-as-nifti-gives-only-1-dynamic-but-slicer-shows-150-frames/47163 "2026-05-28T19:37:10Z")

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Hi everyone, I am loading a DICOM perfusion/cine MRI dataset into 3D Slicer. In the DICOM browser, the series summary shows: Modality: MR Size: 180 × 208 Count: 150 frames So Slicer correctly detects that t…

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## [What are the denoising algorithms used to denoise forward projection X-rays in Slicer](https://discourse.slicer.org/t/what-are-the-denoising-algorithms-used-to-denoise-forward-projection-x-rays-in-slicer/45726)

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**Author:** [@Idris\_Sunmola](https://discourse.slicer.org/u/Idris_Sunmola)\
**Replies:** 0\
**Last updated:** [January 9, 2026, 8:44pm UTC](https://discourse.slicer.org/t/what-are-the-denoising-algorithms-used-to-denoise-forward-projection-x-rays-in-slicer/45726 "2026-01-09T20:44:47Z")

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I would like to know which analytical and/or deep learning algorithms Slicer uses to denoise the forward projection X-rays (also known as sinograms). These X-rays exhibit a host of noise profiles, such as beam hardening,…

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## [PW Meeting Dec 9 2025](https://discourse.slicer.org/t/pw-meeting-dec-9-2025/45406)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [December 8, 2025, 8:06pm UTC](https://discourse.slicer.org/t/pw-meeting-dec-9-2025/45406 "2025-12-08T20:06:51Z")

</div>

Dear Project Week community, The next project week preparation meeting will be tomorrow, Tuesday, Dec 9th, at 10:00 AM ET. (2025-12-09T15:00:00Z (UTC)) If you are interested in discussing a possible project, please use…

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## [SlicerDRRGenerator (lancelevine) — how to get lateral/oblique views? Rotation parameters undocumented](https://discourse.slicer.org/t/slicerdrrgenerator-lancelevine-how-to-get-lateral-oblique-views-rotation-parameters-undocumented/47824)

<div class="topic-metadata">

**Author:** [@anuragp2018](https://discourse.slicer.org/u/anuragp2018)\
**Replies:** 0\
**Last updated:** [August 7, 2026, 10:06am UTC](https://discourse.slicer.org/t/slicerdrrgenerator-lancelevine-how-to-get-lateral-oblique-views-rotation-parameters-undocumented/47824 "2026-08-07T10:06:46Z")

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Hi all, I’m using the SlicerDRRGenerator extension ( GitHub - lancelevine/SlicerDRRGenerator: A 3D Slicer extension that generates Digitally Reconstructed Radiographs · GitHub ) to generate DRRs from a pelvis CT for com…

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## [Threshold and masking](https://discourse.slicer.org/t/threshold-and-masking/45867)

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**Author:** [@Varsha](https://discourse.slicer.org/u/Varsha)\
**Replies:** 0\
**Last updated:** [January 22, 2026, 4:35pm UTC](https://discourse.slicer.org/t/threshold-and-masking/45867 "2026-01-22T16:35:03Z")

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Does anybody know how bone morphometry analysis can be done using the Bone texture module? I am hoping to create texture maps and get corresponding values for trabecular bone density, but am unsure how to do this.

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## [ extensions aren’t showing up and I can’t download them](https://discourse.slicer.org/t/extensions-aren-t-showing-up-and-i-can-t-download-them/48768)

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**Author:** [@bugakova.annie](https://discourse.slicer.org/u/bugakova.annie)\
**Replies:** 1\
**Last updated:** [November 6, 2026, 6:57pm UTC](https://discourse.slicer.org/t/extensions-aren-t-showing-up-and-i-can-t-download-them/48768 "2026-11-06T18:57:47Z")

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hello! I’m having a problem. The program works well, but the extensions aren’t showing up and I can’t download them. What should I do?

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## [Boundary Cut: Upper airway volume + Lower airway volume does not equal Total airway volume](https://discourse.slicer.org/t/boundary-cut-upper-airway-volume-lower-airway-volume-does-not-equal-total-airway-volume/47779)

<div class="topic-metadata">

**Author:** [@valperrier1999](https://discourse.slicer.org/u/valperrier1999)\
**Replies:** 0\
**Last updated:** [July 31, 2026, 1:37pm UTC](https://discourse.slicer.org/t/boundary-cut-upper-airway-volume-lower-airway-volume-does-not-equal-total-airway-volume/47779 "2026-07-31T13:37:46Z")

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Hello, I am working on a research project where I need to measure upper, lower and total airway volumes from CBCT scans using 3D Slicer (version 5.10.0). My workflow is the following: Segment the complete upper airwa…

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## [PyTomography extension is not compatible with 3D Slicer 5.12.2](https://discourse.slicer.org/t/pytomography-extension-is-not-compatible-with-3d-slicer-5-12-2/47702)

<div class="topic-metadata">

**Author:** [@macp970617](https://discourse.slicer.org/u/macp970617)\
**Replies:** 0\
**Last updated:** [July 21, 2026, 2:37pm UTC](https://discourse.slicer.org/t/pytomography-extension-is-not-compatible-with-3d-slicer-5-12-2/47702 "2026-07-21T14:37:24Z")

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Hello, I am trying to use the PyTomography extension with 3D Slicer version 5.12.2, but the extension does not work. It appears to be incompatible with this version of Slicer. Could you please confirm whether PyTomogra…

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## [Next PW Prep meeting Tues May 19 at 10 AM ET](https://discourse.slicer.org/t/next-pw-prep-meeting-tues-may-19-at-10-am-et/47039)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 14, 2026, 8:24pm UTC](https://discourse.slicer.org/t/next-pw-prep-meeting-tues-may-19-at-10-am-et/47039 "2026-05-14T20:24:07Z")

</div>

Dear Project Week community, The next project week preparation meeting will be next Tuesday, May 19, at 10:00 AM ET. (2026-05-19T14:00:00Z (UTC)) If you are interested in discussing a possible project, please reply to …

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## [Project tumor model onto skull surface for craniotomy planning / Extension "Trackerless Craniotomy Planning based on 3D Slicer "](https://discourse.slicer.org/t/project-tumor-model-onto-skull-surface-for-craniotomy-planning-extension-trackerless-craniotomy-planning-based-on-3d-slicer/45950)

<div class="topic-metadata">

**Author:** [@thymallus](https://discourse.slicer.org/u/thymallus)\
**Replies:** 0\
**Last updated:** [January 27, 2026, 5:54pm UTC](https://discourse.slicer.org/t/project-tumor-model-onto-skull-surface-for-craniotomy-planning-extension-trackerless-craniotomy-planning-based-on-3d-slicer/45950 "2026-01-27T17:54:55Z")

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Hi, does this extension still exist? i can’t find it … can anyone help me? :slight\_smile: https://www.researchgate.net/publication/323739599\_Trackerless\_surgical\_image-guided\_system\_design\_using\_an\_intera…

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## [Colorize Volume of a Sequence (sandbox)](https://discourse.slicer.org/t/colorize-volume-of-a-sequence-sandbox/45460)

<div class="topic-metadata">

**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 0\
**Last updated:** [December 12, 2025, 7:00pm UTC](https://discourse.slicer.org/t/colorize-volume-of-a-sequence-sandbox/45460 "2025-12-12T19:00:47Z")

</div>

Colorize Volume of a sequence is failing, 5.10.0 and some previous versions. Error message above. Works for a single frame. Was working for sequences some months ago.

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## [Average mesh module](https://discourse.slicer.org/t/average-mesh-module/45422)

<div class="topic-metadata">

**Author:** [@elisa](https://discourse.slicer.org/u/elisa)\
**Replies:** 0\
**Last updated:** [December 9, 2025, 3:49pm UTC](https://discourse.slicer.org/t/average-mesh-module/45422 "2025-12-09T15:49:33Z")

</div>

Hi, I study imprints in ceramics and I want to reproduce a tool by averaging different meshes of the imprint. I used the average mesh module, selected my different meshes as inputs, creating a new model as output, but i…

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## [ Subtract Segment using python console is not working](https://discourse.slicer.org/t/subtract-segment-using-python-console-is-not-working/47315)

<div class="topic-metadata">

**Author:** [@Gaia\_Eligio](https://discourse.slicer.org/u/Gaia_Eligio)\
**Replies:** 0\
**Last updated:** [June 11, 2026, 3:10pm UTC](https://discourse.slicer.org/t/subtract-segment-using-python-console-is-not-working/47315 "2026-06-11T15:10:32Z")

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Hi, all. I am working on a Python script to automate the creation of skull, meninges, and CSF with the use of segmentations imported from FreeSurfer and MRI images. This is for a research project on Traumatic Brain Injur…

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## [Displace the axes idependently of the plane + navigate in time (4D-flow MRI dataset) + coding preset in python](https://discourse.slicer.org/t/displace-the-axes-idependently-of-the-plane-navigate-in-time-4d-flow-mri-dataset-coding-preset-in-python/47080)

<div class="topic-metadata">

**Author:** [@jceb](https://discourse.slicer.org/u/jceb)\
**Replies:** 0\
**Last updated:** [May 19, 2026, 12:33pm UTC](https://discourse.slicer.org/t/displace-the-axes-idependently-of-the-plane-navigate-in-time-4d-flow-mri-dataset-coding-preset-in-python/47080 "2026-05-19T12:33:20Z")

</div>

Dear 3D Slicer community First many thanks to developers and maintainers of this incredible software. I am working with 4D flow MRI datasets and have the following questions (if needed I can post separate questions) …

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## ["Pull from Repo" for Dev Mode](https://discourse.slicer.org/t/pull-from-repo-for-dev-mode/47064)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 0\
**Last updated:** [May 18, 2026, 6:07am UTC](https://discourse.slicer.org/t/pull-from-repo-for-dev-mode/47064 "2026-05-18T06:07:12Z")

</div>

I added a feature request for a button that allows to get the latest version of module’s python code from the source repository. A "Pull from repo" for DevMode · Issue #9160 · Slicer/Slicer · GitHub The primary driver i…

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## [2D cine not playing when converted to nifti from dicom](https://discourse.slicer.org/t/2d-cine-not-playing-when-converted-to-nifti-from-dicom/45555)

<div class="topic-metadata">

**Author:** [@Nshehata](https://discourse.slicer.org/u/Nshehata)\
**Replies:** 0\
**Last updated:** [December 19, 2025, 12:48pm UTC](https://discourse.slicer.org/t/2d-cine-not-playing-when-converted-to-nifti-from-dicom/45555 "2025-12-19T12:48:40Z")

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Operating system: Linux also MacOS Slicer version: 5.8.1 Expected behavior: Play button to be enabled when importing as DICOM Actual behavior: Play button disabled and fixed on one slice only I thought maybe the prob…

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## [Weird segmentation outcome](https://discourse.slicer.org/t/weird-segmentation-outcome/45010)

<div class="topic-metadata">

**Author:** [@CS1](https://discourse.slicer.org/u/CS1)\
**Replies:** 0\
**Last updated:** [November 9, 2025, 3:22pm UTC](https://discourse.slicer.org/t/weird-segmentation-outcome/45010 "2025-11-09T15:22:07Z")

</div>

Hi there, I’m using total segmentator to segment abdominal muscle (tissue 4 type) + some manual correction/painting of the muscles (using paint function with a set HU range -29 to 150) that are not included in the segmen…

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## [How to see VAT and SAT crossection area at L3 level](https://discourse.slicer.org/t/how-to-see-vat-and-sat-crossection-area-at-l3-level/47756)

<div class="topic-metadata">

**Author:** [@Vishal\_91](https://discourse.slicer.org/u/Vishal_91)\
**Replies:** 0\
**Last updated:** [July 28, 2026, 1:10pm UTC](https://discourse.slicer.org/t/how-to-see-vat-and-sat-crossection-area-at-l3-level/47756 "2026-07-28T13:10:32Z")

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How to calculate VAT and SAT crossection area at L3 level? VAT/SAT ratio also required. Please someone help me, i need it for research purpose. Extensions are not working in my laptop

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## [SwissSkullStripper is having trouble with multiple splices, and so am I](https://discourse.slicer.org/t/swissskullstripper-is-having-trouble-with-multiple-splices-and-so-am-i/47111)

<div class="topic-metadata">

**Author:** [@HomerHaddock](https://discourse.slicer.org/u/HomerHaddock)\
**Replies:** 0\
**Last updated:** [May 21, 2026, 8:30pm UTC](https://discourse.slicer.org/t/swissskullstripper-is-having-trouble-with-multiple-splices-and-so-am-i/47111 "2026-05-21T20:30:45Z")

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I am having trouble with getting a CT scan exported. The scan has one splice for X, Y, and Z where it gets the most quality. To show my problem I used the scan best used on the horizontal plane (It has the most imaging…

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## [Looking for public tricuspid valve CT/MRI/echo datasets compatible with 3D Slicer](https://discourse.slicer.org/t/looking-for-public-tricuspid-valve-ct-mri-echo-datasets-compatible-with-3d-slicer/46311)

<div class="topic-metadata">

**Author:** [@n12401234](https://discourse.slicer.org/u/n12401234)\
**Replies:** 0\
**Last updated:** [February 26, 2026, 7:53pm UTC](https://discourse.slicer.org/t/looking-for-public-tricuspid-valve-ct-mri-echo-datasets-compatible-with-3d-slicer/46311 "2026-02-26T19:53:59Z")

</div>

Hi everyone, I am currently working on tricuspid valve biomechanics research and looking for publicly available imaging datasets (CT, MRI, or 3D echocardiography) of the tricuspid valve that can be imported and segmente…

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## [3D slicer 5.10 SlicerSPECTRecon Critical warning: this will cause errors after 2025-11-30](https://discourse.slicer.org/t/3d-slicer-5-10-slicerspectrecon-critical-warning-this-will-cause-errors-after-2025-11-30/46132)

<div class="topic-metadata">

**Author:** [@macp970617](https://discourse.slicer.org/u/macp970617)\
**Replies:** 0\
**Last updated:** [February 12, 2026, 7:06am UTC](https://discourse.slicer.org/t/3d-slicer-5-10-slicerspectrecon-critical-warning-this-will-cause-errors-after-2025-11-30/46132 "2026-02-12T07:06:14Z")

</div>

Applications/Slicer.app/Contents/Extensions-34045/SPECTRecon/lib/Slicer-5.10/qt-scripted-modules/SPECTRecon.py:3: UserWarning: pkg\_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg\_resources…

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## [Dental Segmentator not working with M1 Mac](https://discourse.slicer.org/t/dental-segmentator-not-working-with-m1-mac/46041)

<div class="topic-metadata">

**Author:** [@nguyetun](https://discourse.slicer.org/u/nguyetun)\
**Replies:** 0\
**Last updated:** [February 3, 2026, 4:04am UTC](https://discourse.slicer.org/t/dental-segmentator-not-working-with-m1-mac/46041 "2026-02-03T04:04:48Z")

</div>

I’ve downloaded Slicer 5.11 and the Dental Segmentator isn’t working. I’ve attached the error message.

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## [Model visibility in 2D - visible in saggital/coronal/3D but not axial](https://discourse.slicer.org/t/model-visibility-in-2d-visible-in-saggital-coronal-3d-but-not-axial/45333)

<div class="topic-metadata">

**Author:** [@ckolluru](https://discourse.slicer.org/u/ckolluru)\
**Replies:** 0\
**Last updated:** [December 2, 2025, 5:57pm UTC](https://discourse.slicer.org/t/model-visibility-in-2d-visible-in-saggital-coronal-3d-but-not-axial/45333 "2025-12-02T17:57:40Z")

</div>

I have two image stacks, a raw CT image and a corresponding distance map (same physical space, dimensions and spacing). I want to iteratively run vtkFlyingEdges2D on each slice of the distance map, with an isocontour val…

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## [Exporting Pre-Post maxillofacial quantification models to GLB](https://discourse.slicer.org/t/exporting-pre-post-maxillofacial-quantification-models-to-glb/48209)

<div class="topic-metadata">

**Author:** [@alvaro](https://discourse.slicer.org/u/alvaro)\
**Replies:** 0\
**Last updated:** [September 21, 2026, 1:57pm UTC](https://discourse.slicer.org/t/exporting-pre-post-maxillofacial-quantification-models-to-glb/48209 "2026-09-21T13:57:51Z")

</div>

Hi everyone, I am working on a custom scripted module in 3D Slicer tailored for Pre-Post surgical maxillofacial and orthognathic studies. My goal is to automate the export workflow for clinical web visualization: Com…

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## [3D Slicer cannot display cardiac LGE MRI volume correctly – only a single line/slice is shown after DICOM import](https://discourse.slicer.org/t/3d-slicer-cannot-display-cardiac-lge-mri-volume-correctly-only-a-single-line-slice-is-shown-after-dicom-import/47746)

<div class="topic-metadata">

**Author:** [@yennys](https://discourse.slicer.org/u/yennys)\
**Replies:** 0\
**Last updated:** [July 27, 2026, 11:12am UTC](https://discourse.slicer.org/t/3d-slicer-cannot-display-cardiac-lge-mri-volume-correctly-only-a-single-line-slice-is-shown-after-dicom-import/47746 "2026-07-27T11:12:33Z")

</div>

Hello everyone, I am using 3D Slicer for cardiac MRI (LGE/PSIR) image analysis. My goal is to perform registration and ROI-based analysis between pre- and post-procedure LGE images. However, I encountered an issue when…

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## [Slicer-SurfaceFragmentsRegistration](https://discourse.slicer.org/t/slicer-surfacefragmentsregistration/45777)

<div class="topic-metadata">

**Author:** [@Esteban\_Barreiro](https://discourse.slicer.org/u/Esteban_Barreiro)\
**Replies:** 0\
**Last updated:** [January 14, 2026, 2:58pm UTC](https://discourse.slicer.org/t/slicer-surfacefragmentsregistration/45777 "2026-01-14T14:58:16Z")

</div>

Hi! I work with FDM 3D printing, and recently found this new extension (Slicer-SurfaceFragmentsRegistration) https://github.com/sebastianandress/Slicer-SurfaceFragmentsRegistration/tree/master but I don’t fully unders…

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## [ROI-based segmentation in MONAI Label Slicer extension does not work correctly for specific labels](https://discourse.slicer.org/t/roi-based-segmentation-in-monai-label-slicer-extension-does-not-work-correctly-for-specific-labels/45634)

<div class="topic-metadata">

**Author:** [@anuragp2018](https://discourse.slicer.org/u/anuragp2018)\
**Replies:** 0\
**Last updated:** [December 30, 2025, 4:27am UTC](https://discourse.slicer.org/t/roi-based-segmentation-in-monai-label-slicer-extension-does-not-work-correctly-for-specific-labels/45634 "2025-12-30T04:27:57Z")

</div>

Problem Description I am using the MONAI Label Slicer extension to perform ROI-based segmentation for a specific label. Although the ROI is drawn correctly in Slicer, the segmentation result does not respect the selecte…

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