# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=13

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

**Page:** 14

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## [MuscleMap Extension Error](https://discourse.slicer.org/t/musclemap-extension-error/46320)

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**Author:** [@MaxVs](https://discourse.slicer.org/u/MaxVs)\
**Replies:** 1\
**Last updated:** [February 27, 2026, 6:39pm UTC](https://discourse.slicer.org/t/musclemap-extension-error/46320 "2026-02-27T18:39:28Z")

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Hi Guys! I’ve recently downloaded a new extension built to segment muscles from multiple types of data. Unfortunatelly I haven’t managed to run it succesfully with GPU. CPU works perfectly fine. The authors can’t repeat…

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## [PET/CT segmentation for Head and neck cancer ](https://discourse.slicer.org/t/pet-ct-segmentation-for-head-and-neck-cancer/46312)

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**Author:** [@Huda](https://discourse.slicer.org/u/Huda)\
**Replies:** 1\
**Last updated:** [February 26, 2026, 8:31pm UTC](https://discourse.slicer.org/t/pet-ct-segmentation-for-head-and-neck-cancer/46312 "2026-02-26T20:31:35Z")

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Hi, I would like to know which semi-automatic segmentation tools are available in 3D Slicer and could be used to segment tumours in head and neck cancer patients on PET/CT images. I am used to ‘Level Tracing’, but I co…

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## [Selecting a High-Performance Laptop for Advanced Virtual Planning](https://discourse.slicer.org/t/selecting-a-high-performance-laptop-for-advanced-virtual-planning/46317)

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**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")

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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…

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

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

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

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## [Volume transformation snapping to orientation closest to voxel orientation](https://discourse.slicer.org/t/volume-transformation-snapping-to-orientation-closest-to-voxel-orientation/46294)

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**Author:** [@Antmaker](https://discourse.slicer.org/u/Antmaker)\
**Replies:** 2\
**Last updated:** [February 26, 2026, 1:14pm UTC](https://discourse.slicer.org/t/volume-transformation-snapping-to-orientation-closest-to-voxel-orientation/46294 "2026-02-26T13:14:40Z")

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I’ve noticed this following behavior when I transform a volume then hide-and-unhide the volume, the volume will snap back to the orientation closest to the voxel orientation. This happens even when I harden the transform…

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## [Cleaning a model](https://discourse.slicer.org/t/cleaning-a-model/46197)

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**Author:** [@kvzwaag](https://discourse.slicer.org/u/kvzwaag)\
**Replies:** 5\
**Last updated:** [February 26, 2026, 12:55pm UTC](https://discourse.slicer.org/t/cleaning-a-model/46197 "2026-02-26T12:55:51Z")

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Hello! New user here, just getting my feet wet. I’m help an head and neck surgeon friend with some modeling to see if it can be used for surgical planning. I’m trying to isolate the mandible, and I’ve gotten close but…

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## [Model to Model Distance Color Map Not working](https://discourse.slicer.org/t/model-to-model-distance-color-map-not-working/46273)

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**Author:** [@Nacole](https://discourse.slicer.org/u/Nacole)\
**Replies:** 3\
**Last updated:** [February 26, 2026, 10:59am UTC](https://discourse.slicer.org/t/model-to-model-distance-color-map-not-working/46273 "2026-02-26T10:59:09Z")

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Hi there, I am hoping to get some help with an issue. My goal is calculate the post op changes after bone grafting to the alveolus in cleft patients. I am having this issue. Import Pre op DICOMs–\> dental segmentor –\> M…

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## [Is there any way slicer can be used to generate synthetic data](https://discourse.slicer.org/t/is-there-any-way-slicer-can-be-used-to-generate-synthetic-data/41181)

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**Author:** [@maniron](https://discourse.slicer.org/u/maniron)\
**Replies:** 4\
**Last updated:** [February 25, 2026, 3:27pm UTC](https://discourse.slicer.org/t/is-there-any-way-slicer-can-be-used-to-generate-synthetic-data/41181 "2026-02-25T15:27:52Z")

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Hi, I am trying to figure out is there a way that slicer could be used to generate synthetic data, I am trying to edit the medical images and generate a new one out of the edited one is there a way I could achieve this …

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## [Custom application development Solutions](https://discourse.slicer.org/t/custom-application-development-solutions/46274)

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**Author:** [@Tarang](https://discourse.slicer.org/u/Tarang)\
**Replies:** 1\
**Last updated:** [February 24, 2026, 1:27pm UTC](https://discourse.slicer.org/t/custom-application-development-solutions/46274 "2026-02-24T13:27:01Z")

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hello everyone, I’m currently looking for the right custom application development solution for my organization. After browsing numerous websites and resources, I feel more confused than informed. A friend suggested I …

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## [Can anyone help with making an STL file of my ear canals for Custom ear plugs?](https://discourse.slicer.org/t/can-anyone-help-with-making-an-stl-file-of-my-ear-canals-for-custom-ear-plugs/46263)

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**Author:** [@JamesBellX](https://discourse.slicer.org/u/JamesBellX)\
**Replies:** 4\
**Last updated:** [February 24, 2026, 12:14pm UTC](https://discourse.slicer.org/t/can-anyone-help-with-making-an-stl-file-of-my-ear-canals-for-custom-ear-plugs/46263 "2026-02-24T12:14:05Z")

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Hi I need to get custom ear plugs for a medical appointment on the 10th March for a life threatening health condition. I need the plugs for the flights to America from London. I recently had a cbct and I am trying to …

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## [Suggestions on best workaround for poor data set](https://discourse.slicer.org/t/suggestions-on-best-workaround-for-poor-data-set/46050)

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**Author:** [@Learn34](https://discourse.slicer.org/u/Learn34)\
**Replies:** 3\
**Last updated:** [February 24, 2026, 2:01am UTC](https://discourse.slicer.org/t/suggestions-on-best-workaround-for-poor-data-set/46050 "2026-02-24T02:01:46Z")

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While I’m now attempting to follow the workflow described in this paper, I’m still stymied by the poor fitness of my baseline dataset (a SPECT of my spine) for segmentation of soft tissue (or it may be a limitation of th…

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## [ALPACA error; Version 5.10.0 (stable)](https://discourse.slicer.org/t/alpaca-error-version-5-10-0-stable/46227)

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**Author:** [@juliangallaun](https://discourse.slicer.org/u/juliangallaun)\
**Replies:** 10\
**Last updated:** [February 23, 2026, 5:42pm UTC](https://discourse.slicer.org/t/alpaca-error-version-5-10-0-stable/46227 "2026-02-23T17:42:47Z")

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Hello all, I have a problem opening the ALPACA extension, with the stable version of 3D slicer 5.10.0 . The error code says, it can’t find a certain file. I should have installed all additional extensions to run…

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## [Merge 3 MRI volumes with different orientations into one](https://discourse.slicer.org/t/merge-3-mri-volumes-with-different-orientations-into-one/27089)

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**Author:** [@Audrina\_Fernandez](https://discourse.slicer.org/u/Audrina_Fernandez)\
**Replies:** 8\
**Last updated:** [February 23, 2026, 10:30am UTC](https://discourse.slicer.org/t/merge-3-mri-volumes-with-different-orientations-into-one/27089 "2026-02-23T10:30:07Z")

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Hi, I’m working on MRI to segment cheek fat volume and often I have one serie of few images for axial axe, one serie for coronal axe, one serie for sagittal axe (for one patient, one IRM). To get a better volume segment…

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## [Help total segmentator](https://discourse.slicer.org/t/help-total-segmentator/46244)

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**Author:** [@jimenagonzalezsal](https://discourse.slicer.org/u/jimenagonzalezsal)\
**Replies:** 1\
**Last updated:** [February 23, 2026, 1:56am UTC](https://discourse.slicer.org/t/help-total-segmentator/46244 "2026-02-23T01:56:50Z")

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Hello! Could anyone help me set up total segmentator! thanks!

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## [Elastic Registration](https://discourse.slicer.org/t/elastic-registration/46025)

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**Author:** [@Zah](https://discourse.slicer.org/u/Zah)\
**Replies:** 2\
**Last updated:** [February 22, 2026, 11:19am UTC](https://discourse.slicer.org/t/elastic-registration/46025 "2026-02-22T11:19:06Z")

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Hi 3D Slicer Community, I’m new to 3D Slicer and still learning, and I have a few questions. After performing an elastic registration, should I harden the transformed CBCT using the “Transforms” module, or should thi…

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## [Lung CT segmenter from Chest Imaging Platform bad quality image and segmentation](https://discourse.slicer.org/t/lung-ct-segmenter-from-chest-imaging-platform-bad-quality-image-and-segmentation/46229)

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**Author:** [@Khaldoun](https://discourse.slicer.org/u/Khaldoun)\
**Replies:** 5\
**Last updated:** [February 21, 2026, 9:43pm UTC](https://discourse.slicer.org/t/lung-ct-segmenter-from-chest-imaging-platform-bad-quality-image-and-segmentation/46229 "2026-02-21T21:43:41Z")

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Problem report for 3D Slicer 5.10.0 win-amd64: \[please describe expected and actual behavior\] Since the last update of Total Segmentator the Lung CT segmenter module in Chest Imaging Platform is producing very blurry se…

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## [How rotate the axial slice in script to make it parallel with the plane across 3 specified points?](https://discourse.slicer.org/t/how-rotate-the-axial-slice-in-script-to-make-it-parallel-with-the-plane-across-3-specified-points/41187)

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**Author:** [@SummerZ2020](https://discourse.slicer.org/u/SummerZ2020)\
**Replies:** 2\
**Last updated:** [February 21, 2026, 12:45am UTC](https://discourse.slicer.org/t/how-rotate-the-axial-slice-in-script-to-make-it-parallel-with-the-plane-across-3-specified-points/41187 "2026-02-21T00:45:50Z")

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Operating system:windows Slicer version:5.6.2 Expected behavior: After running script in slicer, the crossline in the slice window is rotated. Actual behavior: no any rotated happened. The script is: # mark…

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## [Carotid Artery Segmentation for CFD analysis](https://discourse.slicer.org/t/carotid-artery-segmentation-for-cfd-analysis/46177)

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**Author:** [@Arundhati](https://discourse.slicer.org/u/Arundhati)\
**Replies:** 4\
**Last updated:** [February 20, 2026, 5:13pm UTC](https://discourse.slicer.org/t/carotid-artery-segmentation-for-cfd-analysis/46177 "2026-02-20T17:13:31Z")

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Is there any tutorial to create 3D carotid artery to be used for CFD analysis by using any of the sample images available in the 3D slicer itself ?

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## [issues with Elastix tool](https://discourse.slicer.org/t/issues-with-elastix-tool/46213)

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**Author:** [@Martina\_Ma](https://discourse.slicer.org/u/Martina_Ma)\
**Replies:** 3\
**Last updated:** [February 20, 2026, 9:48am UTC](https://discourse.slicer.org/t/issues-with-elastix-tool/46213 "2026-02-20T09:48:55Z")

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Operating system: Windows 11 PRO Slicer version: 5.10.0 Hi everyone, I’m trying to use Elastix tool to register a CT scan with a CBCT one but the tool doesn’t work anymore and gives error. I already resampled the volu…

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## [TotalSegmentator install problem - pytorch version?](https://discourse.slicer.org/t/totalsegmentator-install-problem-pytorch-version/46167)

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**Author:** [@mhopeng](https://discourse.slicer.org/u/mhopeng)\
**Replies:** 2\
**Last updated:** [February 19, 2026, 5:02am UTC](https://discourse.slicer.org/t/totalsegmentator-install-problem-pytorch-version/46167 "2026-02-19T05:02:56Z")

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Hello, I’ve tried to install TotalSegmentator on two macOS systems. When I try to run the sample data set, I get an error that seems to be related to the PyTorch version: ImportError: cannot import name ‘GradScaler’ fro…

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## [Surface semilandmarking: accounting for landmark asymmetry?](https://discourse.slicer.org/t/surface-semilandmarking-accounting-for-landmark-asymmetry/46210)

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**Author:** [@raranda22](https://discourse.slicer.org/u/raranda22)\
**Replies:** 3\
**Last updated:** [February 19, 2026, 4:55am UTC](https://discourse.slicer.org/t/surface-semilandmarking-accounting-for-landmark-asymmetry/46210 "2026-02-19T04:55:09Z")

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Hello, I’ve been using various surface semilandmarking techniques (DeCAL, auto3dgm, Builder (part of ATLAS), PseudoLMGenerator) to landmark bird beak meshes from MarkMyBird. The only landmarking module I’m aware of that…

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## [Scissor Tool Not Working](https://discourse.slicer.org/t/scissor-tool-not-working/46214)

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**Author:** [@jjjooosssiiieee](https://discourse.slicer.org/u/jjjooosssiiieee)\
**Replies:** 3\
**Last updated:** [February 19, 2026, 2:41am UTC](https://discourse.slicer.org/t/scissor-tool-not-working/46214 "2026-02-19T02:41:17Z")

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I have a university project due tomorrow and am in need of URGENT HELP. I am creating images of mouse organs however once i find my organ i must use the scissor tool to cut away the excess however it is not working. I’ve…

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## [Technical terms translation](https://discourse.slicer.org/t/technical-terms-translation/46220)

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**Author:** [@Antonio\_Oliveira](https://discourse.slicer.org/u/Antonio_Oliveira)\
**Replies:** 2\
**Last updated:** [February 19, 2026, 12:22am UTC](https://discourse.slicer.org/t/technical-terms-translation/46220 "2026-02-19T00:22:39Z")

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There are some technical terms, not particular to any field, that upon translation come out as nonsensical due to that term not being used in the translated version. I’ll give one example, but I’ve come across others. I…

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## [Question regarding resample and segmentation](https://discourse.slicer.org/t/question-regarding-resample-and-segmentation/46193)

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**Author:** [@CS1](https://discourse.slicer.org/u/CS1)\
**Replies:** 5\
**Last updated:** [February 18, 2026, 3:02pm UTC](https://discourse.slicer.org/t/question-regarding-resample-and-segmentation/46193 "2026-02-18T15:02:45Z")

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I’m trying to understand how resampling may change my volume outcome that’s generated by segment statistic to mitigate error as I’m structuring my segmentation method, so I would greatly appreciate some input and help! B…

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## [3D Slicer Tutorial Videos — Porosity Analysis, Image Registration & More 🚀](https://discourse.slicer.org/t/3d-slicer-tutorial-videos-porosity-analysis-image-registration-more/46198)

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**Author:** [@Academy.XRM](https://discourse.slicer.org/u/Academy.XRM)\
**Replies:** 2\
**Last updated:** [February 18, 2026, 2:25pm UTC](https://discourse.slicer.org/t/3d-slicer-tutorial-videos-porosity-analysis-image-registration-more/46198 "2026-02-18T14:25:31Z")

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Hi everyone, I’ve started a YouTube tutorial series focused on practical workflows in 3D Slicer, and I’d love to share it with the community here. So far, the videos cover topics such as: • Porosity analysis workflows …

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## [Image dimensions, image spacing and segmentation size](https://discourse.slicer.org/t/image-dimensions-image-spacing-and-segmentation-size/33881)

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**Author:** [@anasmh101](https://discourse.slicer.org/u/anasmh101)\
**Replies:** 8\
**Last updated:** [February 17, 2026, 7:21pm UTC](https://discourse.slicer.org/t/image-dimensions-image-spacing-and-segmentation-size/33881 "2026-02-17T19:21:09Z")

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Hello everyone I have question, I have several CBCTs for same patient taken in different time points, these CBCTs are in different image dimensions and image spacing, and i want to measure and compare the size of a cert…

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## [Segmentation of arteriography and T1w with Gadolinium](https://discourse.slicer.org/t/segmentation-of-arteriography-and-t1w-with-gadolinium/41361)

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**Author:** [@papagif66](https://discourse.slicer.org/u/papagif66)\
**Replies:** 8\
**Last updated:** [February 17, 2026, 12:54pm UTC](https://discourse.slicer.org/t/segmentation-of-arteriography-and-t1w-with-gadolinium/41361 "2026-02-17T12:54:51Z")

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Hello, I’m working on a Moya Moya patient dataset, that includes T1w with Gadolinuim, CT, and arteriography. I registered the images and segmented the skull, from the CT and also from the T1Gado using mri\_synthstrip. …

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## [CBCT volumetric alveolar comparison before after bone graft](https://discourse.slicer.org/t/cbct-volumetric-alveolar-comparison-before-after-bone-graft/45920)

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**Author:** [@Zah](https://discourse.slicer.org/u/Zah)\
**Replies:** 1\
**Last updated:** [February 17, 2026, 12:45pm UTC](https://discourse.slicer.org/t/cbct-volumetric-alveolar-comparison-before-after-bone-graft/45920 "2026-02-17T12:45:56Z")

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Hi there, I am totally new to slicer and would like to use it for a research study where volumetric changes of alveolar bone is measured before and after grafting. I have gone through the tutorials and there is a quantit…

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## [endless loading in the dental segmentator ](https://discourse.slicer.org/t/endless-loading-in-the-dental-segmentator/46175)

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**Author:** [@Imran](https://discourse.slicer.org/u/Imran)\
**Replies:** 1\
**Last updated:** [February 17, 2026, 9:53am UTC](https://discourse.slicer.org/t/endless-loading-in-the-dental-segmentator/46175 "2026-02-17T09:53:01Z")

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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. then I entered this command (slice…

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## [How can I export a brain tumor 3d model with brains opacity?](https://discourse.slicer.org/t/how-can-i-export-a-brain-tumor-3d-model-with-brains-opacity/21625)

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**Author:** [@Vinesh13](https://discourse.slicer.org/u/Vinesh13)\
**Replies:** 2\
**Last updated:** [February 17, 2026, 9:29am UTC](https://discourse.slicer.org/t/how-can-i-export-a-brain-tumor-3d-model-with-brains-opacity/21625 "2026-02-17T09:29:46Z")

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I used the segmentation for making the brain and tumor…later after exporting as an object file with merging both the segments as a single file,I opened this obj file in 3d viewer…but the output doesn’t has the brains opa…

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