**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")
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…
---
## [Laptop requirements to do segmentation and volume rendering of wing imaginal discs](https://discourse.slicer.org/t/laptop-requirements-to-do-segmentation-and-volume-rendering-of-wing-imaginal-discs/47812)
**Author:** [@FlylabCHG](https://discourse.slicer.org/u/FlylabCHG)\
**Replies:** 4\
**Last updated:** [August 6, 2026, 3:34pm UTC](https://discourse.slicer.org/t/laptop-requirements-to-do-segmentation-and-volume-rendering-of-wing-imaginal-discs/47812 "2026-08-06T15:34:24Z")
I would like to know if anyone is using 3-D Slicer to segment wing imaginal discs of Drosophila larvae. I take images of discs that are too small to be isolated out of the larvae. They are labelled with gfp expression an…
---
## [Unable to load DICOM into sequence browser](https://discourse.slicer.org/t/unable-to-load-dicom-into-sequence-browser/47813)
**Author:** [@Rene\_Mazuela](https://discourse.slicer.org/u/Rene_Mazuela)\
**Replies:** 2\
**Last updated:** [August 5, 2026, 9:05pm UTC](https://discourse.slicer.org/t/unable-to-load-dicom-into-sequence-browser/47813 "2026-08-05T21:05:07Z")
We’re having an inconsistent issue in 3D Slicer with loading DICOM data as a sequence. Some team members can load a DICOM series into the Sequence Browser and select the proper frame, but others do not see the option to …
---
## [Download side giving internal error](https://discourse.slicer.org/t/download-side-giving-internal-error/47811)
**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [August 5, 2026, 8:14pm UTC](https://discourse.slicer.org/t/download-side-giving-internal-error/47811 "2026-08-05T20:14:24Z")
I am trying to download the stable for windows. After I click it tries to connect for a few minutes and eventually gives “Internal Server Error” @Sam\_Horvath @ebrahim
---
## [2026.08.04 Weekly Meeting](https://discourse.slicer.org/t/2026-08-04-weekly-meeting/47761)
**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 6\
**Last updated:** [August 4, 2026, 3:46pm UTC](https://discourse.slicer.org/t/2026-08-04-weekly-meeting/47761 "2026-08-04T15:46:19Z")
Title: 2026.08.04 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 · August 4, 2026…
---
## [extensions manager website is not opening](https://discourse.slicer.org/t/extensions-manager-website-is-not-opening/47800)
**Author:** [@enjy\_sallam](https://discourse.slicer.org/u/enjy_sallam)\
**Replies:** 1\
**Last updated:** [August 4, 2026, 3:26pm UTC](https://discourse.slicer.org/t/extensions-manager-website-is-not-opening/47800 "2026-08-04T15:26:14Z")
extensions manager website is not opening
---
## [A newcomer to 3D Slicer shares a cinematic interior fly-through of his own LAD and asks whether the rippled texture on the lumen wall is real anatomy or a segmentation/reconstruction artifact.](https://discourse.slicer.org/t/a-newcomer-to-3d-slicer-shares-a-cinematic-interior-fly-through-of-his-own-lad-and-asks-whether-the-rippled-texture-on-the-lumen-wall-is-real-anatomy-or-a-segmentation-reconstruction-artifact/47778)
**Author:** [@Passerby](https://discourse.slicer.org/u/Passerby)\
**Replies:** 3\
**Last updated:** [August 3, 2026, 5:20pm UTC](https://discourse.slicer.org/t/a-newcomer-to-3d-slicer-shares-a-cinematic-interior-fly-through-of-his-own-lad-and-asks-whether-the-rippled-texture-on-the-lumen-wall-is-real-anatomy-or-a-segmentation-reconstruction-artifact/47778 "2026-08-03T17:20:26Z")
Hi all, This is my first real project in 3D Slicer, and my first time using Guided Artery Segmentation, so I’d value a reality check from people who work with cardiac CTA. I’m a retired electrical engineer and commercia…
---
## [Segmenting Occipital Bone on a Head CT](https://discourse.slicer.org/t/segmenting-occipital-bone-on-a-head-ct/47777)
**Author:** [@Kate\_Sticha](https://discourse.slicer.org/u/Kate_Sticha)\
**Replies:** 1\
**Last updated:** [August 2, 2026, 11:49am UTC](https://discourse.slicer.org/t/segmenting-occipital-bone-on-a-head-ct/47777 "2026-08-02T11:49:51Z")
Operating system: 3D slicer Slicer version: 5.8.1 Expected behavior: I am trying to segment the occipital bone of a Head CT. I set the initial threshold to 226-3071 in order to capture the skull bone. I think use the c…
---
## [PyTorch install fails on Windows with WinError 206 — PythonSlicer.exe is not longPathAware](https://discourse.slicer.org/t/pytorch-install-fails-on-windows-with-winerror-206-pythonslicer-exe-is-not-longpathaware/47781)
**Author:** [@pboarantes](https://discourse.slicer.org/u/pboarantes)\
**Replies:** 1\
**Last updated:** [July 31, 2026, 7:40pm UTC](https://discourse.slicer.org/t/pytorch-install-fails-on-windows-with-winerror-206-pythonslicer-exe-is-not-longpathaware/47781 "2026-07-31T19:40:47Z")
Environment 3D Slicer 5.12.3, Windows 11 Default install path: C:\\Users\\\\\AppData\\Local\\slicer.org\\3D Slicer 5.12.3\\ Extensions: TotalSegmentator, PyTorch, NNUNet torch 2.13.0+cu130 / torchvision 0.28.0+cu130 (sel…
---
## [New Colorize Volume module](https://discourse.slicer.org/t/new-colorize-volume-module/32254)
**Author:** [@jaimigray](https://discourse.slicer.org/u/jaimigray)\
**Replies:** 18\
**Last updated:** [July 31, 2026, 2:45pm UTC](https://discourse.slicer.org/t/new-colorize-volume-module/32254 "2026-07-31T14:45:36Z")
Just added to 3D Slicer 5.5 is the new Colorize Volume module! I tried it on a fully segmented rattlesnake skull with really nice results comparable to the expensive proprietary software VGStudio Max. I played around wit…
---
## [No new mac extensions for stable](https://discourse.slicer.org/t/no-new-mac-extensions-for-stable/47768)
**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [July 31, 2026, 1:53pm UTC](https://discourse.slicer.org/t/no-new-mac-extensions-for-stable/47768 "2026-07-31T13:53:59Z")
Cdash shows no mac extensions being build for MacOS for today. That doesn’t seem like the usual lateness to me: SlicerStable @ebrahim @Sam\_Horvath
---
## [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)
**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")
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…
---
## [Digital Orthognathic Planning: A Full Workflow for Surgeons & Trainees using 3D Slicer](https://discourse.slicer.org/t/digital-orthognathic-planning-a-full-workflow-for-surgeons-trainees-using-3d-slicer/44363)
**Author:** [@manjula](https://discourse.slicer.org/u/manjula)\
**Replies:** 4\
**Last updated:** [July 30, 2026, 3:06pm UTC](https://discourse.slicer.org/t/digital-orthognathic-planning-a-full-workflow-for-surgeons-trainees-using-3d-slicer/44363 "2026-07-30T15:06:50Z")
I’ve created a comprehensive video tutorial that walks through my full workflow for performing virtual surgical planning (VSP) for orthognathic surgery. The video covers everything from aligning CT scans and intra-oral …
---
## [MPR or reslice, saving planes](https://discourse.slicer.org/t/mpr-or-reslice-saving-planes/47765)
**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 1\
**Last updated:** [July 30, 2026, 2:41pm UTC](https://discourse.slicer.org/t/mpr-or-reslice-saving-planes/47765 "2026-07-30T14:41:53Z")
Is there a mechanism/extension to recall MPR/reslicing (interactive) planes? eg, I have two volumes in a scene, I reslice one, then switch to the other volume and reslice. Want to switch back to volume 1 and have its …
---
## [Superimposition of STL files / segmentation](https://discourse.slicer.org/t/superimposition-of-stl-files-segmentation/35695)
**Author:** [@constance\_sid](https://discourse.slicer.org/u/constance_sid)\
**Replies:** 8\
**Last updated:** [July 30, 2026, 10:54am UTC](https://discourse.slicer.org/t/superimposition-of-stl-files-segmentation/35695 "2026-07-30T10:54:18Z")
hello ! I’m writing a thesis for my end of studies. It’s about dental mouvements with orthodontics appliance. I have 2 intra oral scans that I need to analyse and compare. those scans are 3D stl files. i figured out t…
---
## [Problem using MEMOS extension](https://discourse.slicer.org/t/problem-using-memos-extension/34456)
**Author:** [@coco](https://discourse.slicer.org/u/coco)\
**Replies:** 25\
**Last updated:** [July 29, 2026, 5:00pm UTC](https://discourse.slicer.org/t/problem-using-memos-extension/34456 "2026-07-29T17:00:51Z")
Dear Murat, very excited to use this tool for tests but I seem to be stuck. Most likely a problem with my environment but any suggestion or help appreciated. I installed a fresh version of slicer (5.6.1) on windows 11.…
---
## [Aligning CBCT & intraoral scan](https://discourse.slicer.org/t/aligning-cbct-intraoral-scan/45801)
**Author:** [@Aiden](https://discourse.slicer.org/u/Aiden)\
**Replies:** 3\
**Last updated:** [July 29, 2026, 6:53am UTC](https://discourse.slicer.org/t/aligning-cbct-intraoral-scan/45801 "2026-07-29T06:53:11Z")
I have a STL from an intraoral scan with 3shape, and a CBCT in dicom. How can I align these semi automatically using a few manual landmarks? What I have: 1x Skull CBCT dicom (edit: I also have a segmentation of this fr…
---
## [Grow from seeds error - minimum 2 visible segments required](https://discourse.slicer.org/t/grow-from-seeds-error-minimum-2-visible-segments-required/33279)
**Author:** [@JamesM](https://discourse.slicer.org/u/JamesM)\
**Replies:** 24\
**Last updated:** [July 28, 2026, 10:06pm UTC](https://discourse.slicer.org/t/grow-from-seeds-error-minimum-2-visible-segments-required/33279 "2026-07-28T22:06:48Z")
Hello! I am measuring tumor volume, segmenting the inside and background separately and using the “grow from seed” function. However, when I try to use “grow from seed” again after filling in the completed volume where t…
---
## [2026.07.28 Weekly Meeting](https://discourse.slicer.org/t/2026-07-28-weekly-meeting/47713)
**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 4\
**Last updated:** [July 28, 2026, 7:25pm UTC](https://discourse.slicer.org/t/2026-07-28-weekly-meeting/47713 "2026-07-28T19:25:36Z")
Title: 2026.07.28 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 · July 28, 2026 …
---
## [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)
**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")
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
---
## [Working Apple Silicon MPS workaround for DentalSegmentator / SlicerNNUnet under Rosetta](https://discourse.slicer.org/t/working-apple-silicon-mps-workaround-for-dentalsegmentator-slicernnunet-under-rosetta/47755)
**Author:** [@Carlo\_Strada](https://discourse.slicer.org/u/Carlo_Strada)\
**Replies:** 0\
**Last updated:** [July 28, 2026, 1:10pm UTC](https://discourse.slicer.org/t/working-apple-silicon-mps-workaround-for-dentalsegmentator-slicernnunet-under-rosetta/47755 "2026-07-28T13:10:03Z")
I tested a proof of concept that allows DentalSegmentator to use Apple Silicon GPU acceleration through MPS, while the main 3D Slicer application continues running as x86\_64 under Rosetta. Environment MacBook Pro with …
---
## [Build Slicer on Nvidia's Jetson Orin Nano](https://discourse.slicer.org/t/build-slicer-on-nvidias-jetson-orin-nano/47737)
**Author:** [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Replies:** 5\
**Last updated:** [July 28, 2026, 1:36am UTC](https://discourse.slicer.org/t/build-slicer-on-nvidias-jetson-orin-nano/47737 "2026-07-28T01:36:52Z")
Hi, I have this developer kit and I was able to compile Slicer. My steps where almost the same as provided on Project Description | NA-MIC Project Weeks and Scripts for building Slicer on Ubuntu ARM aarch64 · GitHub 1…
---
## [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/47748)
**Author:** [@yennys](https://discourse.slicer.org/u/yennys)\
**Replies:** 1\
**Last updated:** [July 27, 2026, 5:05pm 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/47748 "2026-07-27T17:05:12Z")
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…
---
## [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)
**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")
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…
---
## [Measuring per-tooth displacement between serial intraoral scans - which modules?](https://discourse.slicer.org/t/measuring-per-tooth-displacement-between-serial-intraoral-scans-which-modules/47723)
**Author:** [@Alla\_Belova](https://discourse.slicer.org/u/Alla_Belova)\
**Replies:** 2\
**Last updated:** [July 25, 2026, 4:15pm UTC](https://discourse.slicer.org/t/measuring-per-tooth-displacement-between-serial-intraoral-scans-which-modules/47723 "2026-07-25T16:15:56Z")
Hi all — I’m a dentist working on a PhD metrology project and I kindly ask for your help to build an efficient protocol for measuring tooth displacement in time. The data: five surface meshes (STL) of the same mandibula…
---
## [Slicer 5.12.3 plans and fixing the macOS stable extension packages](https://discourse.slicer.org/t/slicer-5-12-3-plans-and-fixing-the-macos-stable-extension-packages/47715)
**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 9\
**Last updated:** [July 25, 2026, 1:32am UTC](https://discourse.slicer.org/t/slicer-5-12-3-plans-and-fixing-the-macos-stable-extension-packages/47715 "2026-07-25T01:32:49Z")
Yesterday we merged Slicer#9302 which worked out the cause of the issue with macOS C++ extension packages on Slicer 5.12, and which hopefully resolved the issue. Today there’s good evidence from the nightly packages th…
---
## [Concurrent slicer mcp session](https://discourse.slicer.org/t/concurrent-slicer-mcp-session/47612)
**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 7\
**Last updated:** [July 24, 2026, 7:15pm UTC](https://discourse.slicer.org/t/concurrent-slicer-mcp-session/47612 "2026-07-24T19:15:36Z")
Sometimes I run two agents simultaneously for different tasks. these tasks are often executed in different Slicer sessions also running concurrently (e.g., stable vs a preview version, or different code branches being te…
---
## [Asking for more mask save format](https://discourse.slicer.org/t/asking-for-more-mask-save-format/47709)
**Author:** [@zhousy5310](https://discourse.slicer.org/u/zhousy5310)\
**Replies:** 8\
**Last updated:** [July 24, 2026, 6:29pm UTC](https://discourse.slicer.org/t/asking-for-more-mask-save-format/47709 "2026-07-24T18:29:56Z")
Hi all, May i ask why does 3D slicer only support output the segmentation results as these 4: .seg.nrrd; .seg.nhdr; .nrrd; .nhdr. Is it possible, without using plugins, to save the segmentation results separately into …
---
## [New to SlicerBiomech - How to measure Cortical Area of Long Bone](https://discourse.slicer.org/t/new-to-slicerbiomech-how-to-measure-cortical-area-of-long-bone/47728)
**Author:** [@rjgilmour](https://discourse.slicer.org/u/rjgilmour)\
**Replies:** 0\
**Last updated:** [July 23, 2026, 4:40pm UTC](https://discourse.slicer.org/t/new-to-slicerbiomech-how-to-measure-cortical-area-of-long-bone/47728 "2026-07-23T16:40:19Z")
Hi all, I’m new to both Slicer and the SlicerBiomech and SegmentGeometry extensions. I’m hoping to calculate cortical and medullary area of long bone cross sections, in addition to total area. Does anyone know if this e…
---
## [SlicerFab doesnt work properly in 5.0.2](https://discourse.slicer.org/t/slicerfab-doesnt-work-properly-in-5-0-2/24001)
**Author:** [@Esteban\_Barreiro](https://discourse.slicer.org/u/Esteban_Barreiro)\
**Replies:** 4\
**Last updated:** [July 23, 2026, 2:43pm UTC](https://discourse.slicer.org/t/slicerfab-doesnt-work-properly-in-5-0-2/24001 "2026-07-23T14:43:32Z")
Hi there! I have trouble using SlicerFab Module in 5.0.2 The bitmaps generated doesnt start from the first slice as it should, it just stays at the top and create slices from there. It was working fine in 5.1 (last week) …
[Previous page](https://discourse.slicer.org/latest.md?page=5)
[Next page](https://discourse.slicer.org/latest.md?page=7)