# Top **URL:** https://discourse.slicer.org/top.md?page=15 [Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md) **Page:** 16 --- ## [Brachial plexus and subclavian vessel segmentation](https://discourse.slicer.org/t/brachial-plexus-and-subclavian-vessel-segmentation/47657)

**Author:** [@Eserval](https://discourse.slicer.org/u/Eserval)\ **Replies:** 0\ **Last updated:** [July 17, 2026, 1:35pm UTC](https://discourse.slicer.org/t/brachial-plexus-and-subclavian-vessel-segmentation/47657 "2026-07-17T13:35:24Z")

Hello everyone, I’m working on a surgical planning project for thoracic outlet syndrome. Is anyone segmenting peripheral nerve structures from MRI in 3D Slicer? I need to segment the brachial plexus and the subclavian … --- ## [Radiosteriormetric analysis- finding micromotion of knee replacement implant](https://discourse.slicer.org/t/radiosteriormetric-analysis-finding-micromotion-of-knee-replacement-implant/46667)

**Author:** [@vinothkumar](https://discourse.slicer.org/u/vinothkumar)\ **Replies:** 0\ **Last updated:** [April 6, 2026, 12:18pm UTC](https://discourse.slicer.org/t/radiosteriormetric-analysis-finding-micromotion-of-knee-replacement-implant/46667 "2026-04-06T12:18:11Z")

radiosteriometric analysis is a method to find metal implants implanted in bone over time. I am doing research on micromotion of knee implant in osteoporotic patients over two years by comparing the distance between meta… --- ## [How to export a NIfTI file with adjusted slice orientation while keeping the original origin?](https://discourse.slicer.org/t/how-to-export-a-nifti-file-with-adjusted-slice-orientation-while-keeping-the-original-origin/46542)

**Author:** [@Ronald\_Lu](https://discourse.slicer.org/u/Ronald_Lu)\ **Replies:** 0\ **Last updated:** [March 24, 2026, 2:02am UTC](https://discourse.slicer.org/t/how-to-export-a-nifti-file-with-adjusted-slice-orientation-while-keeping-the-original-origin/46542 "2026-03-24T02:02:08Z")

Hello everyone, I am using 3D Slicer and would like to rotate the slice views (coordinate axes) to a specific orientation that better matches my anatomical reference. My goal is to export a new .nii file that preserves … --- ## [How to create layer hierarchies for gltf export](https://discourse.slicer.org/t/how-to-create-layer-hierarchies-for-gltf-export/46432)

**Author:** [@Marcela\_Cardenas](https://discourse.slicer.org/u/Marcela_Cardenas)\ **Replies:** 0\ **Last updated:** [March 11, 2026, 12:24pm UTC](https://discourse.slicer.org/t/how-to-create-layer-hierarchies-for-gltf-export/46432 "2026-03-11T12:24:17Z")

Hello, I am trying to export a model using the OpenAnatomy Export module, creating subcategories for tissues (such as skeletal system, muscular system, etc. as seen here: Online 3D Viewer ). I have tried creating separa… --- ## [Estimation of vocal tract area function from rt MRI images](https://discourse.slicer.org/t/estimation-of-vocal-tract-area-function-from-rt-mri-images/45027)

**Author:** [@cbbader](https://discourse.slicer.org/u/cbbader)\ **Replies:** 1\ **Last updated:** [November 11, 2025, 5:26am UTC](https://discourse.slicer.org/t/estimation-of-vocal-tract-area-function-from-rt-mri-images/45027 "2025-11-11T05:26:17Z")

I’m a phonetician with lots of 2D and 3D rt MRI images of the vocal tract. Any tips on how to extract the vocal tract area function from these images? --- ## [why cant i download ？](https://discourse.slicer.org/t/why-cant-i-download/46938)

**Author:** [@bluefriend50f](https://discourse.slicer.org/u/bluefriend50f)\ **Replies:** 0\ **Last updated:** [May 6, 2026, 2:35pm UTC](https://discourse.slicer.org/t/why-cant-i-download/46938 "2026-05-06T14:35:10Z")

when i click a link to download mrb，the outcome is The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.drive me crazy，such as http://slicer.kitware.com/… --- ## [Issue importing mri](https://discourse.slicer.org/t/issue-importing-mri/46544)

**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\ **Replies:** 0\ **Last updated:** [March 24, 2026, 6:57am UTC](https://discourse.slicer.org/t/issue-importing-mri/46544 "2026-03-24T06:57:15Z")

i have this mri which i can view in other viewers . however its not opening in slicer. its not being added in data base --- ## [SUV Quantification Voxel Values differing from Exported Values](https://discourse.slicer.org/t/suv-quantification-voxel-values-differing-from-exported-values/45756)

**Author:** [@CSalt](https://discourse.slicer.org/u/CSalt)\ **Replies:** 0\ **Last updated:** [January 12, 2026, 6:32pm UTC](https://discourse.slicer.org/t/suv-quantification-voxel-values-differing-from-exported-values/45756 "2026-01-12T18:32:49Z")

Hi, I am working on some voxel plots comparing a segmented PET region’s SUV values over multiple time points. When I use the segment statistics feature within slicer, I get SUV min/max/average values that match my clini… --- ## [issue with automated dental tools ](https://discourse.slicer.org/t/issue-with-automated-dental-tools/47576)

**Author:** [@deepak\_R](https://discourse.slicer.org/u/deepak_R)\ **Replies:** 0\ **Last updated:** [July 8, 2026, 11:07am UTC](https://discourse.slicer.org/t/issue-with-automated-dental-tools/47576 "2026-07-08T11:07:49Z")

Hello everyone, I am using 3D Slicer 5.12.0 (also tested with 5.10.0) and the latest AutomatedDentalTools extension from the Extension Manager. I am trying to run ALI on Carestream CBCT DICOM data. The volume loads co… --- ## [Multiple organs segmentation in a MRI sequence?](https://discourse.slicer.org/t/multiple-organs-segmentation-in-a-mri-sequence/46699)

**Author:** [@koperkill](https://discourse.slicer.org/u/koperkill)\ **Replies:** 0\ **Last updated:** [April 9, 2026, 1:36pm UTC](https://discourse.slicer.org/t/multiple-organs-segmentation-in-a-mri-sequence/46699 "2026-04-09T13:36:47Z")

Hello, For a DCE-MRI study, I would like to extract the signal intensity, through time, for a dozen organs and regions of the upper body. I have successfully built a time sequence using my 40 volumes in time, drawn a s… --- ## [Problems related to features between theory of radiomics and pyradiomics ](https://discourse.slicer.org/t/problems-related-to-features-between-theory-of-radiomics-and-pyradiomics/45679)

**Author:** [@Cidi-2810](https://discourse.slicer.org/u/Cidi-2810)\ **Replies:** 0\ **Last updated:** [January 5, 2026, 9:28pm UTC](https://discourse.slicer.org/t/problems-related-to-features-between-theory-of-radiomics-and-pyradiomics/45679 "2026-01-05T21:28:50Z")

https://docs.google.com/spreadsheets/d/1DA15prfyoDq8dxiiPZnI\_mUPHrWa\_AMV/edit?usp=sharing&ouid=116590247353327979827&rtpof=true&sd=true (This is a link excel that my partner and me did the test with features, I just test… --- ## [Reminder: Meetings start today!](https://discourse.slicer.org/t/reminder-meetings-start-today/45133)

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\ **Replies:** 0\ **Last updated:** [November 18, 2025, 2:50pm UTC](https://discourse.slicer.org/t/reminder-meetings-start-today/45133 "2025-11-18T14:50:57Z")

Project Week Prep Meetings start 2025-11-18T15:00:00Z (UTC) --- ## [Workflow Advice: Preclinical rat brain CT hemispheric volumetry](https://discourse.slicer.org/t/workflow-advice-preclinical-rat-brain-ct-hemispheric-volumetry/48643)

**Author:** [@kbroeren](https://discourse.slicer.org/u/kbroeren)\ **Replies:** 0\ **Last updated:** [October 29, 2026, 7:56pm UTC](https://discourse.slicer.org/t/workflow-advice-preclinical-rat-brain-ct-hemispheric-volumetry/48643 "2026-10-29T19:56:25Z")

Hello, I am working with micro-CT scans of rat brains to quantify hemispheric tissue loss following Controlled Cortical Impact using the method: % Tissue loss = (Vcontra-V ipsi)/(V contra). There are three specific step… --- ## [I installed the Cochlear Automatic Segmentation extension successfully in 3D Slicer 5.8, ](https://discourse.slicer.org/t/i-installed-the-cochlear-automatic-segmentation-extension-successfully-in-3d-slicer-5-8/47562)

**Author:** [@pasfri](https://discourse.slicer.org/u/pasfri)\ **Replies:** 0\ **Last updated:** [July 7, 2026, 1:39pm UTC](https://discourse.slicer.org/t/i-installed-the-cochlear-automatic-segmentation-extension-successfully-in-3d-slicer-5-8/47562 "2026-07-07T13:39:46Z")

I installed the Cochlear Automatic Segmentation extension successfully in 3D Slicer 5.8, but it does not work. When I open the module, the output segmentation remains “None” and no segmentation is created after clicking … --- ## [Exploring digital membership cards for patient/research access in medical imaging environments](https://discourse.slicer.org/t/exploring-digital-membership-cards-for-patient-research-access-in-medical-imaging-environments/46684)

**Author:** [@hanblue](https://discourse.slicer.org/u/hanblue)\ **Replies:** 0\ **Last updated:** [April 8, 2026, 2:14pm UTC](https://discourse.slicer.org/t/exploring-digital-membership-cards-for-patient-research-access-in-medical-imaging-environments/46684 "2026-04-08T14:14:45Z")

Hi everyone, I’ve been thinking about how digital identity and access systems can be improved in medical imaging and research environments, especially in setups where multiple institutions collaborate. In many industri… --- ## [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/45865)

**Author:** [@Chandana](https://discourse.slicer.org/u/Chandana)\ **Replies:** 0\ **Last updated:** [January 22, 2026, 3:41pm 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/45865 "2026-01-22T15:41:42Z")

Operating system: Windows 11 Slicer version: 5.9 Expected behavior: clear radial artery stl Actual behavior: unclear lump with bone --- ## [open nrrd segmentation file in lungctanalyzer](https://discourse.slicer.org/t/open-nrrd-segmentation-file-in-lungctanalyzer/45828)

**Author:** [@Letizia\_Saviozzi](https://discourse.slicer.org/u/Letizia_Saviozzi)\ **Replies:** 0\ **Last updated:** [January 19, 2026, 4:44pm UTC](https://discourse.slicer.org/t/open-nrrd-segmentation-file-in-lungctanalyzer/45828 "2026-01-19T16:44:54Z")

I apologize in advance for my very bad computer knowledge. Operating system: Windows 11, 64 bit Slicer version: 5.10.0 Expected behavior: A year ago I save some scenes (Slicer version 5.6.2), leaving them open in the … --- ## [Irregular patch areas using VMTK](https://discourse.slicer.org/t/irregular-patch-areas-using-vmtk/45343)

**Author:** [@svankuijk](https://discourse.slicer.org/u/svankuijk)\ **Replies:** 0\ **Last updated:** [December 3, 2025, 9:05am UTC](https://discourse.slicer.org/t/irregular-patch-areas-using-vmtk/45343 "2025-12-03T09:05:55Z")

Dear all, I’m experiencing some issues with surface patching in 3D Slicer (using VMTK) during the post-processing of my carotid steady-state CFD simulations. The CFD run itself appears correct; the WSS output is proper… --- ## [Aruco navigation, camera Intel realsense d415](https://discourse.slicer.org/t/aruco-navigation-camera-intel-realsense-d415/48245)

**Author:** [@D.i\_V](https://discourse.slicer.org/u/D.i_V)\ **Replies:** 0\ **Last updated:** [September 23, 2026, 2:47pm UTC](https://discourse.slicer.org/t/aruco-navigation-camera-intel-realsense-d415/48245 "2026-09-23T14:47:48Z")

Hello! I am developing a navigation system model using ArUco markers. Configuration file - Optical marker tracker using MMF video from plus toolkit 2.8. I calibrated the camera using a chessboard pattern. The video in 3D… --- ## [Persistent Error when Generating SkinMould](https://discourse.slicer.org/t/persistent-error-when-generating-skinmould/46930)

**Author:** [@MichaelRuiz95](https://discourse.slicer.org/u/MichaelRuiz95)\ **Replies:** 0\ **Last updated:** [May 5, 2026, 2:52pm UTC](https://discourse.slicer.org/t/persistent-error-when-generating-skinmould/46930 "2026-05-05T14:52:22Z")

Hello! My name is Michael, I am an undergrad student currently doing a senior research project that involves the use of 3DSlicer. It is a great application, however when I try to generate a skin mould to generate a mode… --- ## [How to use the PySERA in 3D Slicer?](https://discourse.slicer.org/t/how-to-use-the-pysera-in-3d-slicer/46133)

**Author:** [@Subhash\_Kheruka](https://discourse.slicer.org/u/Subhash_Kheruka)\ **Replies:** 0\ **Last updated:** [February 12, 2026, 7:07am UTC](https://discourse.slicer.org/t/how-to-use-the-pysera-in-3d-slicer/46133 "2026-02-12T07:07:29Z")

I want to know how to install the pysera in 3 D slicer --- ## [PW Meeting Dec 16 2025](https://discourse.slicer.org/t/pw-meeting-dec-16-2025/45503)

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\ **Replies:** 0\ **Last updated:** [December 15, 2025, 9:31pm UTC](https://discourse.slicer.org/t/pw-meeting-dec-16-2025/45503 "2025-12-15T21:31:47Z")

Dear Project Week community, The next project week preparation meeting will be tomorrow Tuesday, Dec 16, at 10:00 AM ET. (2025-12-16T15:00:00Z (UTC)) If you are interested in discussing a possible project, please reply… --- ## [Lung segmentation problem(Dicom file resolution)](https://discourse.slicer.org/t/lung-segmentation-problem-dicom-file-resolution/45272)

**Author:** [@Seungho](https://discourse.slicer.org/u/Seungho)\ **Replies:** 0\ **Last updated:** [November 29, 2025, 1:37am UTC](https://discourse.slicer.org/t/lung-segmentation-problem-dicom-file-resolution/45272 "2025-11-29T01:37:29Z")

I am trying to perform lung segmentation, but the image resolution is too low as shown in the picture. Even after pointing everywhere, the segmentation does not work. Could you please advise me on what to do? Thank you f… --- ## [Dúvida. Preciso de ajuda](https://discourse.slicer.org/t/duvida-preciso-de-ajuda/47519)

**Author:** [@Candice\_Fabri](https://discourse.slicer.org/u/Candice_Fabri)\ **Replies:** 0\ **Last updated:** [July 1, 2026, 2:45pm UTC](https://discourse.slicer.org/t/duvida-preciso-de-ajuda/47519 "2026-07-01T14:45:43Z")

Ola. Meu nome é Candice. Brasileira. Preciso de orientação como ler arquivo .mvl . Se tem alguma extensão ou algum programa para a conversão. Obrigada. Tendo dificuldade para exportar meu exame do aparelho de ultrasso… --- ## [Timestamps in the testing dashboard are inconsistent](https://discourse.slicer.org/t/timestamps-in-the-testing-dashboard-are-inconsistent/46815)

**Author:** [@MaxHoges](https://discourse.slicer.org/u/MaxHoges)\ **Replies:** 0\ **Last updated:** [April 23, 2026, 11:50am UTC](https://discourse.slicer.org/t/timestamps-in-the-testing-dashboard-are-inconsistent/46815 "2026-04-23T11:50:30Z")

I was just checking out the testing dashboard and noticed that the timestamps in the build overview table don’t match with the timestamps Ince you click through to more details on the build. For example, here’s the view… --- ## [Orbital wall segmentation and bridging defects](https://discourse.slicer.org/t/orbital-wall-segmentation-and-bridging-defects/46703)

**Author:** [@hungryjoe](https://discourse.slicer.org/u/hungryjoe)\ **Replies:** 0\ **Last updated:** [April 9, 2026, 3:27pm UTC](https://discourse.slicer.org/t/orbital-wall-segmentation-and-bridging-defects/46703 "2026-04-09T15:27:12Z")

Hi there, Pretty new to this so very much appreciate any help. I am trying to 3D print orbits, but running into issues with thin bone and holes. I am trying to use filters, wrap solidify, etc but I just cannot seem to m… --- ## [Specific reason for using WinMain instead of main?](https://discourse.slicer.org/t/specific-reason-for-using-winmain-instead-of-main/45235)

**Author:** [@codeling](https://discourse.slicer.org/u/codeling)\ **Replies:** 0\ **Last updated:** [November 26, 2025, 10:56am UTC](https://discourse.slicer.org/t/specific-reason-for-using-winmain-instead-of-main/45235 "2025-11-26T10:56:02Z")

I just discovered that Slicer is using int \_\_stdcall WinMain(…) on Windows (basically since forever, as far as I can tell). From what I can tell, WinMain is just a wrapper making it easier for Windows-targeted developme… --- ## [Section thickness](https://discourse.slicer.org/t/section-thickness/46674)

**Author:** [@sturiones](https://discourse.slicer.org/u/sturiones)\ **Replies:** 0\ **Last updated:** [April 7, 2026, 9:58am UTC](https://discourse.slicer.org/t/section-thickness/46674 "2026-04-07T09:58:25Z")

How can I set up the slice thickness while uploading the stack of histological (light microscopy) sections? --- ## [Selecting a High-Performance Laptop for Advanced Virtual Planning](https://discourse.slicer.org/t/selecting-a-high-performance-laptop-for-advanced-virtual-planning/46317)

**Author:** [@MoBakri](https://discourse.slicer.org/u/MoBakri)\ **Replies:** 0\ **Last updated:** [February 26, 2026, 7:55pm UTC](https://discourse.slicer.org/t/selecting-a-high-performance-laptop-for-advanced-virtual-planning/46317 "2026-02-26T19:55:54Z")

Dear colleagues, I am planning to purchase a new laptop to be used for 3D Slicer and other design and virtual planning software. I would like it to have sufficient graphics performance and processing power to handle dem… --- ## [endless loading in the dental segmentator](https://discourse.slicer.org/t/endless-loading-in-the-dental-segmentator/46178)

**Author:** [@Imran](https://discourse.slicer.org/u/Imran)\ **Replies:** 0\ **Last updated:** [February 16, 2026, 4:51pm UTC](https://discourse.slicer.org/t/endless-loading-in-the-dental-segmentator/46178 "2026-02-16T16:51:15Z")

I installed the dental segmentator extension to automatically segment the cbct. I download the cbct, click apply, and the download begins, which lasts indefinitely. nvidia rtx 4070 gpu. help me fix it --- ## [Got error msg while applying MedSam2](https://discourse.slicer.org/t/got-error-msg-while-applying-medsam2/45862)

**Author:** [@aiden.zhu](https://discourse.slicer.org/u/aiden.zhu)\ **Replies:** 0\ **Last updated:** [January 22, 2026, 1:04pm UTC](https://discourse.slicer.org/t/got-error-msg-while-applying-medsam2/45862 "2026-01-22T13:04:40Z")

Operating system: windows Slicer version: 5.11.0-2026-01-19 Expected behavior: no errors Actual behavior: errors with pickling Hi all, Trying to work with MedSam2 and got the following error while clicking on “Segme… --- ## [Objects in-memory exchange between modules](https://discourse.slicer.org/t/objects-in-memory-exchange-between-modules/45771)

**Author:** [@Yaroslav\_Plutenko](https://discourse.slicer.org/u/Yaroslav_Plutenko)\ **Replies:** 0\ **Last updated:** [January 13, 2026, 4:02pm UTC](https://discourse.slicer.org/t/objects-in-memory-exchange-between-modules/45771 "2026-01-13T16:02:17Z")

Greeting! I’m developing a few scripted modules for plant MRI data processing and lifecycle management, two of which act as clients for a remote FastAPI server. The modules have different purposes; therefore, they are k… --- ## [How to set the .ini file's entries beofre build?](https://discourse.slicer.org/t/how-to-set-the-ini-files-entries-beofre-build/45078)

**Author:** [@Victor\_Wayne](https://discourse.slicer.org/u/Victor_Wayne)\ **Replies:** 0\ **Last updated:** [November 14, 2025, 10:21am UTC](https://discourse.slicer.org/t/how-to-set-the-ini-files-entries-beofre-build/45078 "2025-11-14T10:21:17Z")

Hello, I am currently using \`slicer.app.slicerUserSettingsFilePath()\` function to get the .ini file path when slicer is running and setting some entries. For example I set NumberOfFilesToKeep entry in the logging sectio… --- ## [Create of the new preset in ASD/VSD device simulator topic](https://discourse.slicer.org/t/create-of-the-new-preset-in-asd-vsd-device-simulator-topic/46925)

**Author:** [@Kamil.Kadyrov](https://discourse.slicer.org/u/Kamil.Kadyrov)\ **Replies:** 0\ **Last updated:** [May 5, 2026, 10:19am UTC](https://discourse.slicer.org/t/create-of-the-new-preset-in-asd-vsd-device-simulator-topic/46925 "2026-05-05T10:19:01Z")

Hi everybody! Does anyone know how to add my own preset into the custom device section inside ASD/VSD device simulator topic? Is there a possibility to do it whatsoever? --- ## [slicer 3D Hierarchical Registration Error](https://discourse.slicer.org/t/slicer-3d-hierarchical-registration-error/46517)

**Author:** [@Kelly\_Godkin](https://discourse.slicer.org/u/Kelly_Godkin)\ **Replies:** 0\ **Last updated:** [March 20, 2026, 2:34pm UTC](https://discourse.slicer.org/t/slicer-3d-hierarchical-registration-error/46517 "2026-03-20T14:34:38Z")

Hi, I am currently using the slicer 3D Hierarchical Registration module and I am getting the following error message: D:\\a\\im\\build\\cp39-cp39-win\_amd64\\\_deps\\elx-src\\Core\\Main\\itkElastixRegistrationMethod.hxx:389: ITK … --- ## [PW44 Meeting Dec 2 2025](https://discourse.slicer.org/t/pw44-meeting-dec-2-2025/45303)

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\ **Replies:** 0\ **Last updated:** [December 1, 2025, 9:35pm UTC](https://discourse.slicer.org/t/pw44-meeting-dec-2-2025/45303 "2025-12-01T21:35:16Z")

Dear Project Week community, The next project week preparation meeting will be tomorrow, Tuesday Dec 2, at 10:00 AM ET. (2025-12-02T15:00:00Z (UTC)) If you are interested in discussing a possible project, please join u… --- ## [The calculations used for determining TbTh/ TbSp/ & Tb.N in BoneMorphometry extension?](https://discourse.slicer.org/t/the-calculations-used-for-determining-tbth-tbsp-tb-n-in-bonemorphometry-extension/48416)

**Author:** [@danielleadams098](https://discourse.slicer.org/u/danielleadams098)\ **Replies:** 0\ **Last updated:** [October 6, 2026, 4:14pm UTC](https://discourse.slicer.org/t/the-calculations-used-for-determining-tbth-tbsp-tb-n-in-bonemorphometry-extension/48416 "2026-10-06T16:14:41Z")

Operating system: Mac OS 26.2 Slicer version: 5.12.4 Expected behavior: Actual behavior: I am looking for documentation on how exactly the BoneMorphometry extension measures trabecular thickness, trabecular separatio… --- ## [Qt6 build: close scene and discard modifications is ignored](https://discourse.slicer.org/t/qt6-build-close-scene-and-discard-modifications-is-ignored/47108)

**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\ **Replies:** 0\ **Last updated:** [May 21, 2026, 5:10pm UTC](https://discourse.slicer.org/t/qt6-build-close-scene-and-discard-modifications-is-ignored/47108 "2026-05-21T17:10:34Z")

I am experimenting with using Slicer built with Qt6 on Arch Linux on a daily basis. When a scene is closed, the SaveBeforeClosingScene appears. When the Close scene (discard modifications) button is clicked, the scene i… --- ## [Problem fiducial registration wizard](https://discourse.slicer.org/t/problem-fiducial-registration-wizard/46875)

**Author:** [@Zaky\_Alfarizi](https://discourse.slicer.org/u/Zaky_Alfarizi)\ **Replies:** 0\ **Last updated:** [April 30, 2026, 7:48am UTC](https://discourse.slicer.org/t/problem-fiducial-registration-wizard/46875 "2026-04-30T07:48:04Z")

Check this out. What happen to my system? why the S in RAS have number ±600? i have doin pivot calibration with rmse 0.3 stylus to stylus tip. whats wrong? so its make the transform matrix IS have number ±1300, please ex… --- ## [NO Meeting this week](https://discourse.slicer.org/t/no-meeting-this-week/45921)

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\ **Replies:** 0\ **Last updated:** [January 26, 2026, 10:36am UTC](https://discourse.slicer.org/t/no-meeting-this-week/45921 "2026-01-26T10:36:58Z")

Hi all, There will be no developer meeting this week due to Project Week. See you all next week! Sam --- ## [Apply filters to a CT scan to deal with high-contrast elements](https://discourse.slicer.org/t/apply-filters-to-a-ct-scan-to-deal-with-high-contrast-elements/45560)

**Author:** [@Francesca\_Parrotta](https://discourse.slicer.org/u/Francesca_Parrotta)\ **Replies:** 0\ **Last updated:** [December 19, 2025, 12:49pm UTC](https://discourse.slicer.org/t/apply-filters-to-a-ct-scan-to-deal-with-high-contrast-elements/45560 "2025-12-19T12:49:15Z")

Good morning everyone, I am workin with CT scans as the one attached (I am attaching just one slice of the CT). My objective is to recognize and segment all the different layers in the scanned structure. As you can see,… --- ## [Converting 3d STL files into ultrasound](https://discourse.slicer.org/t/converting-3d-stl-files-into-ultrasound/47131)

**Author:** [@dirtgrub](https://discourse.slicer.org/u/dirtgrub)\ **Replies:** 0\ **Last updated:** [May 24, 2026, 8:33am UTC](https://discourse.slicer.org/t/converting-3d-stl-files-into-ultrasound/47131 "2026-05-24T08:33:56Z")

I’m trying to create an ultrasound trainer, i have the files for a 3d STL of the area but I am wondering how I can go about converting all of this into an ultrasound --- ## [Controlling Chordal Decimation & Preventing Non-Manifold Edges When Exporting 3D Slicer Segmentations to CAD STEP/STL](https://discourse.slicer.org/t/controlling-chordal-decimation-preventing-non-manifold-edges-when-exporting-3d-slicer-segmentations-to-cad-step-stl/48748)

**Author:** [@cadguide](https://discourse.slicer.org/u/cadguide)\ **Replies:** 1\ **Last updated:** [November 7, 2026, 3:35pm UTC](https://discourse.slicer.org/t/controlling-chordal-decimation-preventing-non-manifold-edges-when-exporting-3d-slicer-segmentations-to-cad-step-stl/48748 "2026-11-07T15:35:52Z")

When converting segmented DICOM anatomical volumes (such as patient-specific cranial implants or orthopedic surgical guides) from 3D Slicer’s Segment Editor into closed STL meshes for downstream CAD modeling, Flying Edge… --- ## [DIEP flap breast reconstructio challenges in post operative imaging and 3D Slicer visualization workflow](https://discourse.slicer.org/t/diep-flap-breast-reconstructio-challenges-in-post-operative-imaging-and-3d-slicer-visualization-workflow/46769)

**Author:** [@elysac](https://discourse.slicer.org/u/elysac)\ **Replies:** 0\ **Last updated:** [April 17, 2026, 1:51pm UTC](https://discourse.slicer.org/t/diep-flap-breast-reconstructio-challenges-in-post-operative-imaging-and-3d-slicer-visualization-workflow/46769 "2026-04-17T13:51:41Z")

Hello everyone, I am working on understanding post-operative imaging and 3D visualization workflows related to DIEP flap breast reconstruction cases. In a recent clinical scenario, I observed some challenges in interpr… --- ## [How can I perform segmentation of the masticatory muscles (temporalis, masseter, pterygoids) using MR images?](https://discourse.slicer.org/t/how-can-i-perform-segmentation-of-the-masticatory-muscles-temporalis-masseter-pterygoids-using-mr-images/46466)

**Author:** [@Alirasat](https://discourse.slicer.org/u/Alirasat)\ **Replies:** 0\ **Last updated:** [March 16, 2026, 6:00pm UTC](https://discourse.slicer.org/t/how-can-i-perform-segmentation-of-the-masticatory-muscles-temporalis-masseter-pterygoids-using-mr-images/46466 "2026-03-16T18:00:50Z")

I want to perform segmentation of the masticatory muscles (temporalis, masseter, and pterygoids) on 1.5-Tesla MR images, but I have not been able to achieve this using MONAI or TotalSegmentator. I would be very grateful … --- ## [Slicer AURs throw CMAKE errors](https://discourse.slicer.org/t/slicer-aurs-throw-cmake-errors/47654)

**Author:** [@kikubamutwe](https://discourse.slicer.org/u/kikubamutwe)\ **Replies:** 0\ **Last updated:** [July 17, 2026, 1:14pm UTC](https://discourse.slicer.org/t/slicer-aurs-throw-cmake-errors/47654 "2026-07-17T13:14:02Z")

The AURs listed for Arch in the docs do not work on CachyOS: Getting Started — 3D Slicer documentation They throw CMAKE errors as follows: patching file CMakeLists.txt CMake Error at CMakeLists.txt:25 (CMAKE\_MINIMUM\_RE… --- ## [Measuring the volume of the fossa indent of bird skulls from a 3D mesh image](https://discourse.slicer.org/t/measuring-the-volume-of-the-fossa-indent-of-bird-skulls-from-a-3d-mesh-image/48236)

**Author:** [@tami\_evans](https://discourse.slicer.org/u/tami_evans)\ **Replies:** 0\ **Last updated:** [September 23, 2026, 2:30am UTC](https://discourse.slicer.org/t/measuring-the-volume-of-the-fossa-indent-of-bird-skulls-from-a-3d-mesh-image/48236 "2026-09-23T02:30:53Z")

New user here :slight\_smile: I am trying to measure the volume of the fossa in bird skulls from a 3D mesh scan, I believe I need to cap the indent with a closed curve and go from there, but I am a little lost. I have 15… --- ## [No PW Meeting this week (Dec 30th)](https://discourse.slicer.org/t/no-pw-meeting-this-week-dec-30th/45637)

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\ **Replies:** 0\ **Last updated:** [December 30, 2025, 4:30am UTC](https://discourse.slicer.org/t/no-pw-meeting-this-week-dec-30th/45637 "2025-12-30T04:30:49Z")

Enjoy the holidays! – The PW organizing committee: Tina Kapur, Simon Drouin, Rafael Palomar, Sam Horvath, Theodore Aptekarev --- ## [Auto skeleton to trajectory mv3d file](https://discourse.slicer.org/t/auto-skeleton-to-trajectory-mv3d-file/45487)

**Author:** [@kuoi](https://discourse.slicer.org/u/kuoi)\ **Replies:** 0\ **Last updated:** [December 15, 2025, 5:18am UTC](https://discourse.slicer.org/t/auto-skeleton-to-trajectory-mv3d-file/45487 "2025-12-15T05:18:56Z")

Hello, I am thinking that a commercial software called Avizo could do auto skeleton and output the trajectory as mv3d (MicroVisu3D) file mv3d header looks like this # MicroVisu3D file # Number of lines 1 # Number of … --- ## [slicer 3D Hierarchical Registration Error](https://discourse.slicer.org/t/slicer-3d-hierarchical-registration-error/46515)

Hi, I am currently using the slicer 3D Hierarchical Registration module and I am getting the following error message: D:\\a\\im\\build\\cp39-cp39-win\_amd64\\\_deps\\elx-src\\Core\\Main\\itkElastixRegistrationMethod.hxx:389: ITK … [Previous page](https://discourse.slicer.org/top.md?page=14&per_page=50) [Next page](https://discourse.slicer.org/top.md?page=16&per_page=50)