# Latest

**URL:** https://discourse.slicer.org/latest.md?page=20

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

**Page:** 21

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## [Synthetic PET from CT ](https://discourse.slicer.org/t/synthetic-pet-from-ct/37066)

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**Author:** [@oismaster](https://discourse.slicer.org/u/oismaster)\
**Replies:** 3\
**Last updated:** [February 28, 2026, 10:26am UTC](https://discourse.slicer.org/t/synthetic-pet-from-ct/37066 "2026-02-28T10:26:21Z")

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This paper ( PMID: \[38471502\] Synthetic PET from CT improves diagnosis and prognosis for lung cancer: Proof of concept - PubMed) describes a process to use a CT to predict what the PET will look like. Is this a useful m…

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## [Install ModalityConverter](https://discourse.slicer.org/t/install-modalityconverter/46308)

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**Author:** [@jmarichal](https://discourse.slicer.org/u/jmarichal)\
**Replies:** 4\
**Last updated:** [February 28, 2026, 10:07am UTC](https://discourse.slicer.org/t/install-modalityconverter/46308 "2026-02-28T10:07:46Z")

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Hi, New user here! I’m trying to download the ModalityConverter extension: GitHub - ciroraggio/SlicerModalityConverter. When trying via the extension manager, I got the following error message. So I went on extensions.…

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## [How to change the default file format for save](https://discourse.slicer.org/t/how-to-change-the-default-file-format-for-save/46278)

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**Author:** [@Victor\_Wayne](https://discourse.slicer.org/u/Victor_Wayne)\
**Replies:** 2\
**Last updated:** [February 28, 2026, 4:01am UTC](https://discourse.slicer.org/t/how-to-change-the-default-file-format-for-save/46278 "2026-02-28T04:01:31Z")

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Hello, When we click on the save button the default file format for saving a scene is .mrml. Is there any way I can change it to .mrb? Is there a way to edit the config file so that the save data dialog opens with .mrb …

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## [VMTK tool 3D slicer](https://discourse.slicer.org/t/vmtk-tool-3d-slicer/46330)

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**Author:** [@Tair](https://discourse.slicer.org/u/Tair)\
**Replies:** 1\
**Last updated:** [February 27, 2026, 8:01pm UTC](https://discourse.slicer.org/t/vmtk-tool-3d-slicer/46330 "2026-02-27T20:01:40Z")

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Hello, I started to use the VMTK took and I don’t understand. In my VTMK the only package I see relevant to centerlines are Extract centerlines. I don’t have the centerlines computation. is it the same? why I don’t h…

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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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## [Curved Planner - cant find](https://discourse.slicer.org/t/curved-planner-cant-find/46329)

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**Author:** [@Tair](https://discourse.slicer.org/u/Tair)\
**Replies:** 0\
**Last updated:** [February 27, 2026, 2:38pm UTC](https://discourse.slicer.org/t/curved-planner-cant-find/46329 "2026-02-27T14:38:26Z")

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I can’t find the curved planner option, I download the send box and I still cant find it does it have other names?

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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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## [DECA --\> any requirements on decimation of the model?](https://discourse.slicer.org/t/deca-any-requirements-on-decimation-of-the-model/46282)

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**Author:** [@MrMarkus](https://discourse.slicer.org/u/MrMarkus)\
**Replies:** 1\
**Last updated:** [February 25, 2026, 4:16pm UTC](https://discourse.slicer.org/t/deca-any-requirements-on-decimation-of-the-model/46282 "2026-02-25T16:16:46Z")

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Hi, I am wondering if there are any recommandations for decimation of the 3D model of interest. Working with CT data of mouse skull, the original 3D ply model is about 100 MB. After running “quadratic” decimation wit…

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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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## [Folder visibility confusing](https://discourse.slicer.org/t/folder-visibility-confusing/23753)

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**Author:** [@fbordignon](https://discourse.slicer.org/u/fbordignon)\
**Replies:** 6\
**Last updated:** [February 25, 2026, 2:26pm UTC](https://discourse.slicer.org/t/folder-visibility-confusing/23753 "2026-02-25T14:26:13Z")

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The eye icon is both loved and hated by our users, but I believe there is a confusing behavior for the folder eye icon. When I close the folder’s eye and have both 2D and 3D renderings, only the 3D hides: To confu…

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## [2026.02.24 Weekly Meeting](https://discourse.slicer.org/t/2026-02-24-weekly-meeting/46266)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 3\
**Last updated:** [February 24, 2026, 5:33pm UTC](https://discourse.slicer.org/t/2026-02-24-weekly-meeting/46266 "2026-02-24T17:33:52Z")

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Tomorrow, 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: https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Please post to this thread to …

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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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## [Aligning a markup plane to world coordinate system, with orthogonal planes](https://discourse.slicer.org/t/aligning-a-markup-plane-to-world-coordinate-system-with-orthogonal-planes/42032)

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**Author:** [@kat\_b](https://discourse.slicer.org/u/kat_b)\
**Replies:** 6\
**Last updated:** [February 23, 2026, 8:50pm UTC](https://discourse.slicer.org/t/aligning-a-markup-plane-to-world-coordinate-system-with-orthogonal-planes/42032 "2026-02-23T20:50:08Z")

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I am relatively new to 3D Slicer, and haven’t programmed in Python for a while, so please bear with me. In my Slicer environment, I have placed a scapular model (“Model”), and a markup plane (“P”) with associated points …

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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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## [2026.02.17 Weekly Meeting](https://discourse.slicer.org/t/2026-02-17-weekly-meeting/46181)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 7\
**Last updated:** [February 23, 2026, 2:14pm UTC](https://discourse.slicer.org/t/2026-02-17-weekly-meeting/46181 "2026-02-23T14:14:36Z")

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Tomorrow, 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: https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Please post to this thread to …

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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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## [Reproducing Nifti metadata](https://discourse.slicer.org/t/reproducing-nifti-metadata/46105)

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**Author:** [@Yaroslav\_Plutenko](https://discourse.slicer.org/u/Yaroslav_Plutenko)\
**Replies:** 10\
**Last updated:** [February 20, 2026, 11:12am UTC](https://discourse.slicer.org/t/reproducing-nifti-metadata/46105 "2026-02-20T11:12:07Z")

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Greetings! I have a question regarding Nifti format circulation. I’m developing a plugin that interacts with a remote repository and can upload/download images and whole datasets (viewing and fixing labels on the way if…

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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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