# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=22

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

**Page:** 23

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## [CT/CBCT reconstruction](https://discourse.slicer.org/t/ct-cbct-reconstruction/45032)

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**Author:** [@Hussam](https://discourse.slicer.org/u/Hussam)\
**Replies:** 2\
**Last updated:** [November 11, 2025, 2:03pm UTC](https://discourse.slicer.org/t/ct-cbct-reconstruction/45032 "2025-11-11T14:03:06Z")

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Dear Sir or Madam, Do you mind me asking whether 3 D slicer can reconstruct CT/CBCT? Yours sincerely

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## [mCT fossil tooth segmentation](https://discourse.slicer.org/t/mct-fossil-tooth-segmentation/44992)

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**Author:** [@ThomasVanParys](https://discourse.slicer.org/u/ThomasVanParys)\
**Replies:** 7\
**Last updated:** [November 11, 2025, 12:25pm UTC](https://discourse.slicer.org/t/mct-fossil-tooth-segmentation/44992 "2025-11-11T12:25:44Z")

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Hello: I am asking for advice about the best way to segment a tooth from a fossil mandibular fragment. This is from a mCT scan of 1,554 slices. I want to segment enamel, dentine, pulp, and roots etc… but densities are e…

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## [How to remove added module?](https://discourse.slicer.org/t/how-to-remove-added-module/45015)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 6\
**Last updated:** [November 11, 2025, 9:50am UTC](https://discourse.slicer.org/t/how-to-remove-added-module/45015 "2025-11-11T09:50:38Z")

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I added module through drag and drop in additional module path . I want to remove but i could t find a way to remove the added path . Only option is to restore to default

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## [Two ITK packages in Slicer](https://discourse.slicer.org/t/two-itk-packages-in-slicer/45030)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [November 11, 2025, 6:28am UTC](https://discourse.slicer.org/t/two-itk-packages-in-slicer/45030 "2025-11-11T06:28:41Z")

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When I try to register two volumes using our ANTsPy extension, I get this error on Linux. Things workout perfectly fine on Windows and Mac: Switch to module: "ANTsRegistration" WARNING: In /project/itksource/Modules/Co…

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## [Export linear measurements as a table](https://discourse.slicer.org/t/export-linear-measurements-as-a-table/44990)

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**Author:** [@jnations](https://discourse.slicer.org/u/jnations)\
**Replies:** 3\
**Last updated:** [November 10, 2025, 6:13pm UTC](https://discourse.slicer.org/t/export-linear-measurements-as-a-table/44990 "2025-11-10T18:13:48Z")

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I am trying to take multiple linear measurements from a bone using the markups tool, then export the lengths (distances) as a table. This has proven to be incredibly complicated, with posts discussing creating a database…

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## [Support for 2D transforms?](https://discourse.slicer.org/t/support-for-2d-transforms/34701)

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**Author:** [@dzenanz](https://discourse.slicer.org/u/dzenanz)\
**Replies:** 3\
**Last updated:** [November 10, 2025, 4:20pm UTC](https://discourse.slicer.org/t/support-for-2d-transforms/34701 "2025-11-10T16:20:48Z")

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sample2D.tfm #Insight Transform File V1.0 #Transform 0 Transform: AffineTransform\_float\_2\_2 Parameters: 0.99985015 0.017311562 -0.017311562 0.99985015 -0.64851546 -0.7623114 FixedParameters: 0 0 when opened in Slicer, …

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## [Segmentation of 4D sequence volumes using Sequence Registration](https://discourse.slicer.org/t/segmentation-of-4d-sequence-volumes-using-sequence-registration/20567)

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**Author:** [@Shambhavi\_Malik](https://discourse.slicer.org/u/Shambhavi_Malik)\
**Replies:** 5\
**Last updated:** [November 10, 2025, 3:35pm UTC](https://discourse.slicer.org/t/segmentation-of-4d-sequence-volumes-using-sequence-registration/20567 "2025-11-10T15:35:37Z")

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I am trying to segment the CT Cardio Volume Sequence (from the Slicer sample data). I have followed all the steps as mentioned in Load multiple cardiac phases for segmentation/virtual reality question that was posted ear…

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## [Error while using TotalSegmentator。](https://discourse.slicer.org/t/error-while-using-totalsegmentator/45023)

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**Author:** [@hwy13140](https://discourse.slicer.org/u/hwy13140)\
**Replies:** 0\
**Last updated:** [November 10, 2025, 2:51pm UTC](https://discourse.slicer.org/t/error-while-using-totalsegmentator/45023 "2025-11-10T14:51:51Z")

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System: Window 11 Slicer Version: 5.8.1 When I use the total segmentator extension, the Python console keeps showing the following warning during torch installation: WARNING: Retrying (Retry(total=0, connect=None, rea…

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## [Converting multiple DICOM files into one DICOM file](https://discourse.slicer.org/t/converting-multiple-dicom-files-into-one-dicom-file/1448)

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**Author:** [@ybabii](https://discourse.slicer.org/u/ybabii)\
**Replies:** 3\
**Last updated:** [November 10, 2025, 2:51pm UTC](https://discourse.slicer.org/t/converting-multiple-dicom-files-into-one-dicom-file/1448 "2025-11-10T14:51:43Z")

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Operating system: Windows 10 Enterprise Slicer version: Slicer 4.8.0 Expected behavior: Actual behavior: I have 157 DICOM images that are broken down into single images. I need to combine them into one DICOM file. Wh…

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## [Have Made Custom 3D Slicer Apps from Kitware – How to Access Them via Web Browser?](https://discourse.slicer.org/t/have-made-custom-3d-slicer-apps-from-kitware-how-to-access-them-via-web-browser/45021)

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**Author:** [@software](https://discourse.slicer.org/u/software)\
**Replies:** 1\
**Last updated:** [November 10, 2025, 2:31pm UTC](https://discourse.slicer.org/t/have-made-custom-3d-slicer-apps-from-kitware-how-to-access-them-via-web-browser/45021 "2025-11-10T14:31:26Z")

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Hi everyone, I have created some custom 3D Slicer apps using Kitware’s platform, and now I want to access them through a web browser. I’m looking for the easiest technique or approach to do this. Should I use a specifi…

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## [Manual Surface Registration](https://discourse.slicer.org/t/manual-surface-registration/44899)

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**Author:** [@Davi\_Matos](https://discourse.slicer.org/u/Davi_Matos)\
**Replies:** 3\
**Last updated:** [November 10, 2025, 1:29pm UTC](https://discourse.slicer.org/t/manual-surface-registration/44899 "2025-11-10T13:29:25Z")

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Is there a way to do something like this on 3D slicer? Basically, I’m trying to allign this two models for a planned condylectomy. I’ve used surface registration module on Slicer CMF, wich gave me a good match of the tw…

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## [How to clean the folder of Slicer\_Logs?](https://discourse.slicer.org/t/how-to-clean-the-folder-of-slicer-logs/9193)

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**Author:** [@aiden.zhu](https://discourse.slicer.org/u/aiden.zhu)\
**Replies:** 14\
**Last updated:** [November 10, 2025, 12:36pm UTC](https://discourse.slicer.org/t/how-to-clean-the-folder-of-slicer-logs/9193 "2025-11-10T12:36:52Z")

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Operating system: Windows Slicer version: 4.11.0-2019 Expected behavior: Keep Slicer\_Logs folder as small as possible Actual behavior: it is swelling after each usage Hi All expertise in Slicer: I happened to see my…

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## [Cross-section analysis](https://discourse.slicer.org/t/cross-section-analysis/44912)

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**Author:** [@bserrano](https://discourse.slicer.org/u/bserrano)\
**Replies:** 2\
**Last updated:** [November 10, 2025, 7:49am UTC](https://discourse.slicer.org/t/cross-section-analysis/44912 "2025-11-10T07:49:12Z")

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Hi all, We are using cross-section analysis to extract vessel radius. For some centerline nodes, the module prints the message “Consider improving the input surface” and then gives an error when attempting to extract th…

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## [Generating DRRs using the DRRGeneratorModule in a Python Script](https://discourse.slicer.org/t/generating-drrs-using-the-drrgeneratormodule-in-a-python-script/45003)

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**Author:** [@fmarcantoni](https://discourse.slicer.org/u/fmarcantoni)\
**Replies:** 1\
**Last updated:** [November 9, 2025, 9:36pm UTC](https://discourse.slicer.org/t/generating-drrs-using-the-drrgeneratormodule-in-a-python-script/45003 "2025-11-09T21:36:45Z")

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Hello everyone, I’m been using 3D slicer for a couple of weeks now, and I’ve been using the DRRGeneratorModule extension to create DRRs of a volume. Now, I’m trying to change the module parameters and run the generation…

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

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**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")

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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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## [nnInteractive with GPU 5090](https://discourse.slicer.org/t/nninteractive-with-gpu-5090/45002)

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**Author:** [@rakshrma](https://discourse.slicer.org/u/rakshrma)\
**Replies:** 1\
**Last updated:** [November 8, 2025, 7:06am UTC](https://discourse.slicer.org/t/nninteractive-with-gpu-5090/45002 "2025-11-08T07:06:21Z")

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Hi - I am interested to use nnInteractive extension on Nvidia 5090 series laptop. Unfortunately, whenever I try to use Totalsegmentator or nnInteractive, it re-installs an older version of pytorch which is incompatible …

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## [Pedicle screw planner and simulation module](https://discourse.slicer.org/t/pedicle-screw-planner-and-simulation-module/45001)

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**Author:** [@optimistsam](https://discourse.slicer.org/u/optimistsam)\
**Replies:** 0\
**Last updated:** [November 8, 2025, 6:49am UTC](https://discourse.slicer.org/t/pedicle-screw-planner-and-simulation-module/45001 "2025-11-08T06:49:18Z")

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In the pedicle screw planner module, I am unable to load a screw or visualize a screwafter placing markers. Directly getting a tab to adjust screw but no screw is visible. In the pedicle screw simulator module, is it po…

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## [Error while trying to import NRRD and DICOM into 3D Slicer](https://discourse.slicer.org/t/error-while-trying-to-import-nrrd-and-dicom-into-3d-slicer/45000)

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**Author:** [@tarciobr97](https://discourse.slicer.org/u/tarciobr97)\
**Replies:** 0\
**Last updated:** [November 8, 2025, 6:47am UTC](https://discourse.slicer.org/t/error-while-trying-to-import-nrrd-and-dicom-into-3d-slicer/45000 "2025-11-08T06:47:46Z")

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Hi i’m tarcio, and im trying to measure the supraspinatus from multiples MRI that i have from patients to elaborate a study around supraspinatus and radiomics. For that, im using 3d slicer, but in order to do not waste …

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## [Totalsegmentation hardware requirements](https://discourse.slicer.org/t/totalsegmentation-hardware-requirements/44870)

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**Author:** [@alex\_He](https://discourse.slicer.org/u/alex_He)\
**Replies:** 9\
**Last updated:** [November 8, 2025, 6:18am UTC](https://discourse.slicer.org/t/totalsegmentation-hardware-requirements/44870 "2025-11-08T06:18:30Z")

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Hi I am running 3d slicer 5.8 windows 11 with nvidia gpu, when I run totalsegmentation, it takes 45 mins to process. May i ask what is the minimum gpu requirement to run it in just a few minutes?

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## [Moose Extension was ERROR](https://discourse.slicer.org/t/moose-extension-was-error/44998)

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**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 1\
**Last updated:** [November 8, 2025, 5:00am UTC](https://discourse.slicer.org/t/moose-extension-was-error/44998 "2025-11-08T05:00:21Z")

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Dear All, I am faced problem since install dependencies for Moose Extension. Traceback (most recent call last): File “D:\\Slicer 5.8.1\\bin\\Python\\slicer\\util.py”, line 3303, in tryWithErrorDisplay yield File “D:/Slic…

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## [Painting on oblique images](https://discourse.slicer.org/t/painting-on-oblique-images/44968)

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**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 6\
**Last updated:** [November 6, 2025, 2:10pm UTC](https://discourse.slicer.org/t/painting-on-oblique-images/44968 "2025-11-06T14:10:43Z")

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v5.8.1 sample data cta abdomen. Create double oblique… I have never understood this. When I click with the paint tool, I do not get a circle. I might understand this. But I definitely do not understand why when …

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## [Change the color scheme of segmenation file](https://discourse.slicer.org/t/change-the-color-scheme-of-segmenation-file/44977)

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**Author:** [@Ruolin\_Li](https://discourse.slicer.org/u/Ruolin_Li)\
**Replies:** 1\
**Last updated:** [November 6, 2025, 2:03pm UTC](https://discourse.slicer.org/t/change-the-color-scheme-of-segmenation-file/44977 "2025-11-06T14:03:04Z")

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Hello! I’m trying to change the color scheme for the segmentation file I loaded in the 3D Slicer. My segmentation has 126 labels, and they’re currently displayed under the default color GenericAnatomyColors, which is no…

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## [Can you set scissor to a specific size?](https://discourse.slicer.org/t/can-you-set-scissor-to-a-specific-size/44976)

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**Author:** [@CS1](https://discourse.slicer.org/u/CS1)\
**Replies:** 0\
**Last updated:** [November 6, 2025, 12:33pm UTC](https://discourse.slicer.org/t/can-you-set-scissor-to-a-specific-size/44976 "2025-11-06T12:33:58Z")

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Hi guys! I’m hoping to acquire a volume of interest of the trabecular bone of the vertebrae body. So basically my plan is to segment the lumbar vertebrae first and then use scissor function (set the shape as rectangle an…

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## [How to calculate the internal cranial volume (space occupied by the brain) in 3D Slicer](https://discourse.slicer.org/t/how-to-calculate-the-internal-cranial-volume-space-occupied-by-the-brain-in-3d-slicer/44955)

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**Author:** [@Luz\_Velasco](https://discourse.slicer.org/u/Luz_Velasco)\
**Replies:** 2\
**Last updated:** [November 5, 2025, 11:03am UTC](https://discourse.slicer.org/t/how-to-calculate-the-internal-cranial-volume-space-occupied-by-the-brain-in-3d-slicer/44955 "2025-11-05T11:03:22Z")

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Hello everyone, I have a 3D CT scan of a skull (without the brain visible), and I would like to calculate the internal cranial volume — that is, the volume corresponding to the space where the brain would normally be lo…

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## [Adding a library to a custom loadable module](https://discourse.slicer.org/t/adding-a-library-to-a-custom-loadable-module/44945)

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**Author:** [@Suhaim](https://discourse.slicer.org/u/Suhaim)\
**Replies:** 1\
**Last updated:** [November 5, 2025, 8:48am UTC](https://discourse.slicer.org/t/adding-a-library-to-a-custom-loadable-module/44945 "2025-11-05T08:48:12Z")

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Hi, I wanted some support on adding a library in my custom loadable module. This is my cmake for adding a library called “SystemChecker” which is inside a directory called “SystemCheck”. The library is building correc…

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## [How to package Slicer built with a loadable module?](https://discourse.slicer.org/t/how-to-package-slicer-built-with-a-loadable-module/44964)

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**Author:** [@Suhaim](https://discourse.slicer.org/u/Suhaim)\
**Replies:** 1\
**Last updated:** [November 5, 2025, 5:35am UTC](https://discourse.slicer.org/t/how-to-package-slicer-built-with-a-loadable-module/44964 "2025-11-05T05:35:26Z")

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Hi everyone, I am creating this post as a reference for anyone who was wondering on how to package slicer built with a custom loadable module. I was not able to find any documentation on this, please correct me if I am …

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## [Getting ffmpeg crash on Linux](https://discourse.slicer.org/t/getting-ffmpeg-crash-on-linux/44957)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [November 4, 2025, 5:08pm UTC](https://discourse.slicer.org/t/getting-ffmpeg-crash-on-linux/44957 "2025-11-04T17:08:09Z")

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On ubuntu 22.04, ScreenCapture is crashing with the latest preview with this error. I presume this is an ABI issue? /usr/bin/ffmpeg -nostdin -y -r 60 -start\_number 0 -i /tmp/Slicer-NCcZBZ/Slicer-%04d.png -codec mpeg4 -q…

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## [Request for Technical Guidance on OAR Contouring and RTSTRUCT Export Using 3D Slicer](https://discourse.slicer.org/t/request-for-technical-guidance-on-oar-contouring-and-rtstruct-export-using-3d-slicer/44928)

<div class="topic-metadata">

**Author:** [@RAJVEER\_RUPEN](https://discourse.slicer.org/u/RAJVEER_RUPEN)\
**Replies:** 1\
**Last updated:** [November 4, 2025, 2:05pm UTC](https://discourse.slicer.org/t/request-for-technical-guidance-on-oar-contouring-and-rtstruct-export-using-3d-slicer/44928 "2025-11-04T14:05:33Z")

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Respected Team, I am Dr. \[Your Full Name\], BHMS, currently learning and developing skills in OAR (Organs at Risk) contouring using 3D Slicer. My goal is to understand the complete technical workflow for accurate deline…

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## [How to run IGT Volume Reconstruction in terminal](https://discourse.slicer.org/t/how-to-run-igt-volume-reconstruction-in-terminal/44951)

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**Author:** [@elisedl1](https://discourse.slicer.org/u/elisedl1)\
**Replies:** 0\
**Last updated:** [November 3, 2025, 5:33pm UTC](https://discourse.slicer.org/t/how-to-run-igt-volume-reconstruction-in-terminal/44951 "2025-11-03T17:33:03Z")

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If I’ve cloned the repo for SlicerIGT locally, can I perform “recorded sequence volume reconstruction” in terminal? (I need to run it via an ssh remote connection as opposed to using the GUI in actual 3D Slicer). Thanks …

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## [Body composition - abdominal muscle segmentation with total segmentator](https://discourse.slicer.org/t/body-composition-abdominal-muscle-segmentation-with-total-segmentator/44669)

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**Author:** [@CS1](https://discourse.slicer.org/u/CS1)\
**Replies:** 3\
**Last updated:** [November 2, 2025, 1:21pm UTC](https://discourse.slicer.org/t/body-composition-abdominal-muscle-segmentation-with-total-segmentator/44669 "2025-11-02T13:21:55Z")

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Heya, I’m currently using total segmentator subtask - tissue 4 type for abdominal muscle segmentation, however I noticed it doesn’t pick up transverse abdominis at all and is not the best at segmentating iliacus. I’ve ju…

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