# Latest

**URL:** https://discourse.slicer.org/latest.md?page=3

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

**Page:** 4

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## [Applying boundary constraints to DRR volumes in SlicerAutoscoperM](https://discourse.slicer.org/t/applying-boundary-constraints-to-drr-volumes-in-slicerautoscoperm/48106)

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**Author:** [@Dorte](https://discourse.slicer.org/u/Dorte)\
**Replies:** 1\
**Last updated:** [September 10, 2026, 7:22am UTC](https://discourse.slicer.org/t/applying-boundary-constraints-to-drr-volumes-in-slicerautoscoperm/48106 "2026-09-10T07:22:41Z")

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Hello Slicer team and Slicer community, I’m working with monoplanar videoradiography, and I’m trying to reduce depth ambiguity during bone tracking. I was wondering whether SlicerAutoscoperM allows applying geometric o…

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## [3D Slicer Online Training in Fall 2026](https://discourse.slicer.org/t/3d-slicer-online-training-in-fall-2026/48105)

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**Author:** [@SebGoll](https://discourse.slicer.org/u/SebGoll)\
**Replies:** 0\
**Last updated:** [September 9, 2026, 2:19pm UTC](https://discourse.slicer.org/t/3d-slicer-online-training-in-fall-2026/48105 "2026-09-09T14:19:23Z")

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Dear all, Kitware will be holding two 3D Slicer training courses this fall, in Lyon, France and online (Paris time, CET). September 30, 2026: 3D Slicer for Users This course is designed for users who want to get famili…

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## [MouseMaster Extension "module is not loaded"](https://discourse.slicer.org/t/mousemaster-extension-module-is-not-loaded/48099)

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**Author:** [@jamie.miller.phd](https://discourse.slicer.org/u/jamie.miller.phd)\
**Replies:** 3\
**Last updated:** [September 9, 2026, 2:10am UTC](https://discourse.slicer.org/t/mousemaster-extension-module-is-not-loaded/48099 "2026-09-09T02:10:53Z")

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Problem report for 3D Slicer 5.12.3 win-amd64: Trying to use the MouseMaster extension, but after downloading from extension manager, and installing from file, there is a error message in the module finder “MouseMaster m…

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## [2026.09.08 Weekly Meeting](https://discourse.slicer.org/t/2026-09-08-weekly-meeting/48093)

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**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 3\
**Last updated:** [September 8, 2026, 5:16pm UTC](https://discourse.slicer.org/t/2026-09-08-weekly-meeting/48093 "2026-09-08T17:16:18Z")

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Title: 2026.09.08 Weekly Meeting Next Tuesday, 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: Google Meet meeting 📅 Weekly Meeting · September 8, 2…

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## [Whole adult woman body ct scan and mri?](https://discourse.slicer.org/t/whole-adult-woman-body-ct-scan-and-mri/48054)

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**Author:** [@Melodicpinpon](https://discourse.slicer.org/u/Melodicpinpon)\
**Replies:** 4\
**Last updated:** [September 8, 2026, 1:51pm UTC](https://discourse.slicer.org/t/whole-adult-woman-body-ct-scan-and-mri/48054 "2026-09-08T13:51:50Z")

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Hi everyone, Can anyone please tell me where I could download a whole (young healthy) adult woman body ct scan and mri? I would be used to start building a libre 3D atlas of the woman’s anatomy.

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## [4D NifTi flipped and rotated about 90-deg](https://discourse.slicer.org/t/4d-nifti-flipped-and-rotated-about-90-deg/48056)

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**Author:** [@SeunO](https://discourse.slicer.org/u/SeunO)\
**Replies:** 2\
**Last updated:** [September 8, 2026, 12:09pm UTC](https://discourse.slicer.org/t/4d-nifti-flipped-and-rotated-about-90-deg/48056 "2026-09-08T12:09:25Z")

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Hi everyone, Whilst working with some NifTi files, all regular 3DNifti’s seem to match between my application and 3D-Slicer. However, I noticed that the 4D NifTi file I’m working with seems to be flipped in 3D-Slicer ra…

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## [Request for feedback on ToothAnalyserMicroCT extension PR](https://discourse.slicer.org/t/request-for-feedback-on-toothanalysermicroct-extension-pr/48077)

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**Author:** [@Lukon](https://discourse.slicer.org/u/Lukon)\
**Replies:** 2\
**Last updated:** [September 7, 2026, 3:01pm UTC](https://discourse.slicer.org/t/request-for-feedback-on-toothanalysermicroct-extension-pr/48077 "2026-09-07T15:01:21Z")

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Hi everyone, I hope this is the right place to ask for some guidance. I submitted a pull request to add our extension, ToothAnalyserMicroCT, to the Slicer Extensions Catalog: Pull Request #2342 ToothAnalyserMicroCT i…

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## [How to quickly recompile updated code based on the current build version](https://discourse.slicer.org/t/how-to-quickly-recompile-updated-code-based-on-the-current-build-version/48089)

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**Author:** [@zhuofalin](https://discourse.slicer.org/u/zhuofalin)\
**Replies:** 1\
**Last updated:** [September 7, 2026, 2:23pm UTC](https://discourse.slicer.org/t/how-to-quickly-recompile-updated-code-based-on-the-current-build-version/48089 "2026-09-07T14:23:19Z")

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Hello, I am very happy to be back in the Slicer community.:grinning\_face: I typically use an older version of the slicer for development, but thanks to the efforts of the developers, new features are constantly being a…

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## [New extension: SlicerMicroView – read and write GE eXplore / MicroView VFF micro-CT volumes](https://discourse.slicer.org/t/new-extension-slicermicroview-read-and-write-ge-explore-microview-vff-micro-ct-volumes/48083)

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**Author:** [@falkwiegmann](https://discourse.slicer.org/u/falkwiegmann)\
**Replies:** 0\
**Last updated:** [September 6, 2026, 11:02pm UTC](https://discourse.slicer.org/t/new-extension-slicermicroview-read-and-write-ge-explore-microview-vff-micro-ct-volumes/48083 "2026-09-06T23:02:52Z")

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Hi all, I have submitted a small extension to the ExtensionsIndex and would appreciate a review when someone has a moment: Add SlicerMicroView extension by falkwiegmann · Pull Request #2390 · Slicer/ExtensionsIndex · Gi…

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## [How to compute bifurcation angles in Slicer?](https://discourse.slicer.org/t/how-to-compute-bifurcation-angles-in-slicer/25577)

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**Author:** [@tim](https://discourse.slicer.org/u/tim)\
**Replies:** 2\
**Last updated:** [September 4, 2026, 7:39pm UTC](https://discourse.slicer.org/t/how-to-compute-bifurcation-angles-in-slicer/25577 "2026-09-04T19:39:48Z")

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Hi, my goal is to compute centerlines, diameters and bifurcation angles of a vascular tree using Slicer and its Python interactor. I managed to compute both centerlines and diameters using the vmtk scripted modules. H…

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## [Soft-tissue segmentation: advice needed](https://discourse.slicer.org/t/soft-tissue-segmentation-advice-needed/48060)

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**Author:** [@Toumia\_Bessedik](https://discourse.slicer.org/u/Toumia_Bessedik)\
**Replies:** 0\
**Last updated:** [September 3, 2026, 10:20pm UTC](https://discourse.slicer.org/t/soft-tissue-segmentation-advice-needed/48060 "2026-09-03T22:20:55Z")

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Hello, I would like to get your opinion on an approach I am currently using to refine the segmentation of soft tissues in a head MRI. I used TotalSegmentator (MR) to automatically segment the soft tissues, particularly…

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## [Segmentations Module - Opacity Issue](https://discourse.slicer.org/t/segmentations-module-opacity-issue/48044)

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**Author:** [@Malaquias\_Cerrillo](https://discourse.slicer.org/u/Malaquias_Cerrillo)\
**Replies:** 2\
**Last updated:** [September 3, 2026, 5:15pm UTC](https://discourse.slicer.org/t/segmentations-module-opacity-issue/48044 "2026-09-03T17:15:34Z")

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Hi everybody, i’m experiencing some trouble in the latest version 5.12.3 trying to shift the opacity of the different segmentations. However, I can shift the overall opacity of de segmentation node, does this happens to …

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## [Resetting a transform in an existing node](https://discourse.slicer.org/t/resetting-a-transform-in-an-existing-node/48040)

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**Author:** [@shai-ikko](https://discourse.slicer.org/u/shai-ikko)\
**Replies:** 1\
**Last updated:** [September 2, 2026, 3:02pm UTC](https://discourse.slicer.org/t/resetting-a-transform-in-an-existing-node/48040 "2026-09-02T15:02:19Z")

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Hi, In my extension, in some context, I need to reset a transform to Identity, without changing its node otherwise (that is, I need to keep its state wrt volumes, display-nodes etc). When I first wrote this, a few years…

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## [New Extension: DRAI AI 3D Segmentation and Modelling Extension for 3D Slicer](https://discourse.slicer.org/t/new-extension-drai-ai-3d-segmentation-and-modelling-extension-for-3d-slicer/48031)

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**Author:** [@bywbilly](https://discourse.slicer.org/u/bywbilly)\
**Replies:** 0\
**Last updated:** [September 1, 2026, 4:12pm UTC](https://discourse.slicer.org/t/new-extension-drai-ai-3d-segmentation-and-modelling-extension-for-3d-slicer/48031 "2026-09-01T16:12:40Z")

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AI-powered segmentation for Spine/Pelvis (CT) and Aorta–Iliac–Femoral Arteries (CTA). Upload CT volumes directly from 3D Slicer to the DRAI server and receive high-quality, multi-label 3D segmentation masks and models w…

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## [2026.09.01 Weekly Meeting](https://discourse.slicer.org/t/2026-09-01-weekly-meeting/47984)

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**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 1\
**Last updated:** [September 1, 2026, 1:39pm UTC](https://discourse.slicer.org/t/2026-09-01-weekly-meeting/47984 "2026-09-01T13:39:55Z")

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Title: 2026.09.01 Weekly Meeting Next Tuesday, 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: Google Meet meeting 📅 Weekly Meeting · September 1, 2…

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## [RF data streaming from the BK Activ](https://discourse.slicer.org/t/rf-data-streaming-from-the-bk-activ/48025)

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**Author:** [@J.vd.Zee](https://discourse.slicer.org/u/J.vd.Zee)\
**Replies:** 2\
**Last updated:** [August 31, 2026, 7:26pm UTC](https://discourse.slicer.org/t/rf-data-streaming-from-the-bk-activ/48025 "2026-08-31T19:26:01Z")

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We would like to perform research on the raw RF data acquired with a BK Activ ultrasound scanner, with the aim of developing and evaluating methods for improving ultrasound image quality. Could anyone advise us on: whi…

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## [Spect Ct Reconstruction ](https://discourse.slicer.org/t/spect-ct-reconstruction/48001)

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**Author:** [@JuanIgnacioElutchanz](https://discourse.slicer.org/u/JuanIgnacioElutchanz)\
**Replies:** 3\
**Last updated:** [August 30, 2026, 3:47pm UTC](https://discourse.slicer.org/t/spect-ct-reconstruction/48001 "2026-08-30T15:47:13Z")

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Hello everyone, I need some help in terms of spect reconstruction in 3dSlicer. I’m student of Nuclear Medicine in Uruguay, I’m currently working on a research project to present at the Uruguayan Con…

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## [Load Failed over multiple formats (TIFF, NRRD)](https://discourse.slicer.org/t/load-failed-over-multiple-formats-tiff-nrrd/48018)

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**Author:** [@asims](https://discourse.slicer.org/u/asims)\
**Replies:** 4\
**Last updated:** [August 30, 2026, 5:30am UTC](https://discourse.slicer.org/t/load-failed-over-multiple-formats-tiff-nrrd/48018 "2026-08-30T05:30:07Z")

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Hi I have an image stack to load which was provided to me as a series of TIFF files. These can be successfully opened in 3rd party tools such as ImageJ (Fiji) and GIMP. However there is a warning message about the descr…

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## [Adjusting position of markups text](https://discourse.slicer.org/t/adjusting-position-of-markups-text/48014)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 2\
**Last updated:** [August 30, 2026, 1:08am UTC](https://discourse.slicer.org/t/adjusting-position-of-markups-text/48014 "2026-08-30T01:08:14Z")

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I use markups quite often to illustrate CT findings. It would be very helpful if the text within markups could be easily repositioned. At present, it can be difficult to read when the text overlaps with anatomical struct…

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## [Recurring bug on Shoulder tracking](https://discourse.slicer.org/t/recurring-bug-on-shoulder-tracking/47656)

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**Author:** [@AlonsoFigueroa](https://discourse.slicer.org/u/AlonsoFigueroa)\
**Replies:** 12\
**Last updated:** [August 27, 2026, 4:13pm UTC](https://discourse.slicer.org/t/recurring-bug-on-shoulder-tracking/47656 "2026-08-27T16:13:35Z")

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Hello SAM team, We are encountering an issue while tracking a scapula in Autoscoper during an arm elevation task. For one participant, Autoscoper consistently crashes when saving frames within specific ranges of motion…

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## [Aligning STL anatomical models with MRI segmentations in 3D Slicer](https://discourse.slicer.org/t/aligning-stl-anatomical-models-with-mri-segmentations-in-3d-slicer/47983)

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**Author:** [@Toumia\_Bessedik](https://discourse.slicer.org/u/Toumia_Bessedik)\
**Replies:** 4\
**Last updated:** [August 27, 2026, 2:11pm UTC](https://discourse.slicer.org/t/aligning-stl-anatomical-models-with-mri-segmentations-in-3d-slicer/47983 "2026-08-27T14:11:01Z")

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Hi, I am working with an MRI of the head and I have existing STL models for several anatomical domains, including the skull, brain, soft tissue (ST), etc. I would like to use these STL models as references and align th…

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## [Question on Segmentation and Smoothing a Gecko Skull](https://discourse.slicer.org/t/question-on-segmentation-and-smoothing-a-gecko-skull/47990)

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**Author:** [@GBurkin](https://discourse.slicer.org/u/GBurkin)\
**Replies:** 2\
**Last updated:** [August 26, 2026, 6:51pm UTC](https://discourse.slicer.org/t/question-on-segmentation-and-smoothing-a-gecko-skull/47990 "2026-08-26T18:51:15Z")

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Hello, I’m working with CT scans of small geckos, and I’m working on segmenting their skulls and full skeletons. I have mostly taught myself how to segment via YouTube and help pages, but most of these are focused on hu…

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## [How to segment bad quality 4D MRI FLOW](https://discourse.slicer.org/t/how-to-segment-bad-quality-4d-mri-flow/47975)

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**Author:** [@VERRUCKT](https://discourse.slicer.org/u/VERRUCKT)\
**Replies:** 1\
**Last updated:** [August 26, 2026, 1:24pm UTC](https://discourse.slicer.org/t/how-to-segment-bad-quality-4d-mri-flow/47975 "2026-08-26T13:24:14Z")

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Hi everyone :slight\_smile: I’m working on aortic segmentation from 4D flow MRI. I’ve been using TotalSegmentator but results are poor, I assume mostly a domain issue, since it’s CT-trained, plus the low SNR of my data. …

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## [Extension Manager does not launch on Win 11 (Slicer 5.12.3)](https://discourse.slicer.org/t/extension-manager-does-not-launch-on-win-11-slicer-5-12-3/47935)

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**Author:** [@dumichgh](https://discourse.slicer.org/u/dumichgh)\
**Replies:** 3\
**Last updated:** [August 24, 2026, 12:37pm UTC](https://discourse.slicer.org/t/extension-manager-does-not-launch-on-win-11-slicer-5-12-3/47935 "2026-08-24T12:37:25Z")

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Problem report for 3D Slicer 5.12.3 win-amd64: \[please describe expected and actual behavior\] Extension manager does not launch on Windows 11 system after 30min Log: \[DEBUG\]\[Qt\] 19.08.2026 17:14:18 \[\] (unknown:0) - S…

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## [New opportunity](https://discourse.slicer.org/t/new-opportunity/46313)

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**Author:** [@Martin\_Parraga](https://discourse.slicer.org/u/Martin_Parraga)\
**Replies:** 1\
**Last updated:** [August 23, 2026, 1:07pm UTC](https://discourse.slicer.org/t/new-opportunity/46313 "2026-08-23T13:07:08Z")

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Hello everyone! My name is Martin, and I work at micro1. We’re currently looking for talented professionals for 3D Slicer Experts You can find all the details and apply through here. We’re a U.S.-based startup working …

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## [Bronchus segmentation loads but is not visible, while TotalSegmentator segmentation displays correctly](https://discourse.slicer.org/t/bronchus-segmentation-loads-but-is-not-visible-while-totalsegmentator-segmentation-displays-correctly/47886)

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**Author:** [@Tien\_Huynh](https://discourse.slicer.org/u/Tien_Huynh)\
**Replies:** 1\
**Last updated:** [August 23, 2026, 12:54pm UTC](https://discourse.slicer.org/t/bronchus-segmentation-loads-but-is-not-visible-while-totalsegmentator-segmentation-displays-correctly/47886 "2026-08-23T12:54:38Z")

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Hello, I am trying to compare two airway segmentations in 3D Slicer: a Bronchus segmentation generated by one algorithm and an airway segmentation generated by TotalSegmentator. The TotalSegmentator segmentation loads …

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## [TotalSegmentator Extension failed to install req. package](https://discourse.slicer.org/t/totalsegmentator-extension-failed-to-install-req-package/47939)

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**Author:** [@dumichgh](https://discourse.slicer.org/u/dumichgh)\
**Replies:** 2\
**Last updated:** [August 21, 2026, 1:44pm UTC](https://discourse.slicer.org/t/totalsegmentator-extension-failed-to-install-req-package/47939 "2026-08-21T13:44:25Z")

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Problem report for Slicer 5.6.2 win-amd64: When trying to run a TotalSeg got an “error” and process halted : Failed to install required packages. Command ‘\[‘C:/Users/XXXX/AppData/Local/slicer.org/Slicer 5.6.2/bin/../b…

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## [Error using OpenDose 3D ](https://discourse.slicer.org/t/error-using-opendose-3d/46768)

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**Author:** [@Oscar\_Azula](https://discourse.slicer.org/u/Oscar_Azula)\
**Replies:** 1\
**Last updated:** [August 21, 2026, 7:48am UTC](https://discourse.slicer.org/t/error-using-opendose-3d/46768 "2026-08-21T07:48:11Z")

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Hello, I am working with patient images from a Lu-177 therapy study in 3D Slicer. After segmenting the organs and integrating the Absorbed dose rate, I am getting a mass of 0 for all segmented organs. I would apprecia…

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## [Opendose 3D cannot generate integratation of absorbed dose rate table](https://discourse.slicer.org/t/opendose-3d-cannot-generate-integratation-of-absorbed-dose-rate-table/47822)

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**Author:** [@jghtt](https://discourse.slicer.org/u/jghtt)\
**Replies:** 1\
**Last updated:** [August 21, 2026, 7:41am UTC](https://discourse.slicer.org/t/opendose-3d-cannot-generate-integratation-of-absorbed-dose-rate-table/47822 "2026-08-21T07:41:17Z")

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Hello, When I used the extension of Opendose 3D, I have got the absorbed dose rate table,but it is not valid in clicking integrate absorbed dose rate. Did anyone got same problem and how to solve it. Thanks.

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

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**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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