# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=19

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

**Page:** 20

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## [cbct distortion](https://discourse.slicer.org/t/cbct-distortion/45493)

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**Author:** [@seda\_ozdemir](https://discourse.slicer.org/u/seda_ozdemir)\
**Replies:** 1\
**Last updated:** [December 15, 2025, 1:36pm UTC](https://discourse.slicer.org/t/cbct-distortion/45493 "2025-12-15T13:36:32Z")

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In 3D Slicer version 5.10.0, when we load a CBCT with a 24 × 19 mm FOV, distortion occurs in the sagittal and coronal slice views. How can we resolve this issue?

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## [Auto skeleton to trajectory mv3d file](https://discourse.slicer.org/t/auto-skeleton-to-trajectory-mv3d-file/45487)

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**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")

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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 …

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## [Trouble loading .nrrd file in Slicer 5.10.0 as sequence](https://discourse.slicer.org/t/trouble-loading-nrrd-file-in-slicer-5-10-0-as-sequence/45239)

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**Author:** [@gchampa](https://discourse.slicer.org/u/gchampa)\
**Replies:** 9\
**Last updated:** [December 15, 2025, 2:05am UTC](https://discourse.slicer.org/t/trouble-loading-nrrd-file-in-slicer-5-10-0-as-sequence/45239 "2025-12-15T02:05:14Z")

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when I try and import my .nrrd files as sequences (which they work in slicer 5.8.1) i get an error that slicer cannot read it. They will import as volume but then there is no way to change the colour map, i have tried th…

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## [Segmentation in Windows 11 extremely slow](https://discourse.slicer.org/t/segmentation-in-windows-11-extremely-slow/45473)

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**Author:** [@NSLight](https://discourse.slicer.org/u/NSLight)\
**Replies:** 1\
**Last updated:** [December 13, 2025, 6:51pm UTC](https://discourse.slicer.org/t/segmentation-in-windows-11-extremely-slow/45473 "2025-12-13T18:51:24Z")

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Operating System - Windows 11 Slicer 3D Version - 5.8.1 I have been everywhere on the forum, tried different solutions but nothing seems to work. I am working on a dataset (Brain Angio-CT) and trying to segment vessel…

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## [Colorize Volume of a Sequence (sandbox)](https://discourse.slicer.org/t/colorize-volume-of-a-sequence-sandbox/45460)

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**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 0\
**Last updated:** [December 12, 2025, 7:00pm UTC](https://discourse.slicer.org/t/colorize-volume-of-a-sequence-sandbox/45460 "2025-12-12T19:00:47Z")

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Colorize Volume of a sequence is failing, 5.10.0 and some previous versions. Error message above. Works for a single frame. Was working for sequences some months ago.

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## [Can the nninteractive server environment be in a read-only folder](https://discourse.slicer.org/t/can-the-nninteractive-server-environment-be-in-a-read-only-folder/45451)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [December 12, 2025, 4:43pm UTC](https://discourse.slicer.org/t/can-the-nninteractive-server-environment-be-in-a-read-only-folder/45451 "2025-12-12T16:43:59Z")

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During the workshops there are a lot of interest from biologists to use NNInteractive. However, it does take a while to set it up the server, particularly if you are not familiar that kind of thing. In MorphoCloud, we c…

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## [Where can I find a working Slicer 5.6.x portable package with SlicerLiver extension?](https://discourse.slicer.org/t/where-can-i-find-a-working-slicer-5-6-x-portable-package-with-slicerliver-extension/45445)

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**Author:** [@kzx](https://discourse.slicer.org/u/kzx)\
**Replies:** 2\
**Last updated:** [December 12, 2025, 2:34am UTC](https://discourse.slicer.org/t/where-can-i-find-a-working-slicer-5-6-x-portable-package-with-slicerliver-extension/45445 "2025-12-12T02:34:40Z")

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Hello Slicer developers, I am experiencing an issue where the SlicerLiver module does not appear in the module list, even though it is successfully installed through the Extensions Manager. My environment OS: Windows…

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## [How to cut a Model using a Grid Surface markup?](https://discourse.slicer.org/t/how-to-cut-a-model-using-a-grid-surface-markup/45416)

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**Author:** [@GroadoSwaggins](https://discourse.slicer.org/u/GroadoSwaggins)\
**Replies:** 5\
**Last updated:** [December 12, 2025, 1:01am UTC](https://discourse.slicer.org/t/how-to-cut-a-model-using-a-grid-surface-markup/45416 "2025-12-12T01:01:48Z")

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tldr: I would like to cut a Model in “half” using a non-flat planar surface I created with Markup \> Geometric Surface Grid. Is it possible? Further explanation below. I have a CT scan asymmetrical brain Volume that I ha…

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## [Issues visualizing results in DentalModelSeg (Slicer 5.8) – segmentation runs but no output appears](https://discourse.slicer.org/t/issues-visualizing-results-in-dentalmodelseg-slicer-5-8-segmentation-runs-but-no-output-appears/45405)

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**Author:** [@Brendy\_Villanueva](https://discourse.slicer.org/u/Brendy_Villanueva)\
**Replies:** 1\
**Last updated:** [December 11, 2025, 8:38pm UTC](https://discourse.slicer.org/t/issues-visualizing-results-in-dentalmodelseg-slicer-5-8-segmentation-runs-but-no-output-appears/45405 "2025-12-11T20:38:13Z")

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Hello everyone, I am trying to segment teeth from STL dental models using DentalModelSeg, but I am running into visualization issues, and I would really appreciate some guidance. I used: 3D Slicer version 5.8 Den…

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## [3D volume from Tomo Set](https://discourse.slicer.org/t/3d-volume-from-tomo-set/45070)

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**Author:** [@jmac](https://discourse.slicer.org/u/jmac)\
**Replies:** 13\
**Last updated:** [December 11, 2025, 8:30pm UTC](https://discourse.slicer.org/t/3d-volume-from-tomo-set/45070 "2025-12-11T20:30:07Z")

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New to slicer via recommendation from colleague. Very nice tool. Trying to see a 3D volume of mouse from a tomosynthesis dataset (height stack of 24 slices). I know its not going to be a perfect 3D dataset but just wan…

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## [Low Framerate streaming NDI Lyra Transforms in Plus Server](https://discourse.slicer.org/t/low-framerate-streaming-ndi-lyra-transforms-in-plus-server/45434)

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**Author:** [@damparm](https://discourse.slicer.org/u/damparm)\
**Replies:** 2\
**Last updated:** [December 11, 2025, 4:19pm UTC](https://discourse.slicer.org/t/low-framerate-streaming-ndi-lyra-transforms-in-plus-server/45434 "2025-12-11T16:19:36Z")

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Hello My project is to track Telemed ultrasound using a recently purchased NDI Polaris Lyra tracker. So far PlusServer connects well with Telemed and the tracker, Images are moving in my Slicer scene. But the refreshme…

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## [Interaction Box for Transforms](https://discourse.slicer.org/t/interaction-box-for-transforms/45436)

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**Author:** [@Jane\_Hand](https://discourse.slicer.org/u/Jane_Hand)\
**Replies:** 2\
**Last updated:** [December 11, 2025, 1:57pm UTC](https://discourse.slicer.org/t/interaction-box-for-transforms/45436 "2025-12-11T13:57:54Z")

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I can’t figure out how to made my interaction display a box to more easily manipulate my models. I updated to 5.10. While I am able to move my models with the object on the screen, it only allows for local manipulatio…

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## [Undo Segment Changes in Extensions: MONAI label and nnInteractive](https://discourse.slicer.org/t/undo-segment-changes-in-extensions-monai-label-and-nninteractive/45427)

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**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 4\
**Last updated:** [December 10, 2025, 6:00pm UTC](https://discourse.slicer.org/t/undo-segment-changes-in-extensions-monai-label-and-nninteractive/45427 "2025-12-10T18:00:44Z")

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I am trying to understand the undo behavior when editing a segment by hand in extensions such as MONAI label or nnInteractive. I am talking about using the scissors or largest island in the “segment module” in these ext…

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## [Reconstructing a skull fragment with SSM/PDM](https://discourse.slicer.org/t/reconstructing-a-skull-fragment-with-ssm-pdm/45365)

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**Author:** [@ThomasVanParys](https://discourse.slicer.org/u/ThomasVanParys)\
**Replies:** 28\
**Last updated:** [December 9, 2025, 5:52pm UTC](https://discourse.slicer.org/t/reconstructing-a-skull-fragment-with-ssm-pdm/45365 "2025-12-09T17:52:12Z")

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Hello! I am seeking advice on how to practically reconstruct a skull in order to calculate cranial capacity. The skull is a fragment (missing skull base and some parietal), estimated to be a 4 year old indiviual. I ha…

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## [Totalsegmentator and monai segmentation](https://discourse.slicer.org/t/totalsegmentator-and-monai-segmentation/45090)

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**Author:** [@alex\_He](https://discourse.slicer.org/u/alex_He)\
**Replies:** 14\
**Last updated:** [December 9, 2025, 2:42pm UTC](https://discourse.slicer.org/t/totalsegmentator-and-monai-segmentation/45090 "2025-12-09T14:42:49Z")

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Hi I just updated to ed slicer 5.10.0 but I found that it is not compatible with totalsegmentator 2 and monai. May iknow why

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## [SlicerRT isocenter configuration](https://discourse.slicer.org/t/slicerrt-isocenter-configuration/45122)

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**Author:** [@Mafer\_Calix](https://discourse.slicer.org/u/Mafer_Calix)\
**Replies:** 1\
**Last updated:** [December 9, 2025, 12:19pm UTC](https://discourse.slicer.org/t/slicerrt-isocenter-configuration/45122 "2025-12-09T12:19:28Z")

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Hello. I need to know whether the isocenter for the slicerRT is fixed at 100 cm. Sure, in the software I can edit the isocenter position within the body and the SDD. But I need to know if the beam’s field defined in beam…

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## [How to correctly warp a CCT RTSTRUCT target volume to 4DCT after CCT→4DCT registration?](https://discourse.slicer.org/t/how-to-correctly-warp-a-cct-rtstruct-target-volume-to-4dct-after-cct-4dct-registration/45377)

<div class="topic-metadata">

**Author:** [@Huoqin\_Zhou](https://discourse.slicer.org/u/Huoqin_Zhou)\
**Replies:** 1\
**Last updated:** [December 9, 2025, 10:00am UTC](https://discourse.slicer.org/t/how-to-correctly-warp-a-cct-rtstruct-target-volume-to-4dct-after-cct-4dct-registration/45377 "2025-12-09T10:00:23Z")

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(Original post deleted upon author’s request to protect private information. -staff)

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## [Upper airway segmentator](https://discourse.slicer.org/t/upper-airway-segmentator/45413)

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**Author:** [@Noha\_Mansour](https://discourse.slicer.org/u/Noha_Mansour)\
**Replies:** 0\
**Last updated:** [December 9, 2025, 6:20am UTC](https://discourse.slicer.org/t/upper-airway-segmentator/45413 "2025-12-09T06:20:44Z")

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Need help with upper airway segmentation, need to just segment the oropharyngeal space only from full skull CBCT dicom & my problems or questions are: \_ can I crop the FOV 1stly to the oro pharyngeal area ? \_ how can I…

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## [Workflow Documentation](https://discourse.slicer.org/t/workflow-documentation/45385)

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**Author:** [@Tair](https://discourse.slicer.org/u/Tair)\
**Replies:** 1\
**Last updated:** [December 9, 2025, 6:12am UTC](https://discourse.slicer.org/t/workflow-documentation/45385 "2025-12-09T06:12:57Z")

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Hellow everyone, I want to know if there is any option to have a file\\note with all the actions that I do while I’m trying to segment an image. For example, if I first did median filter and then threshold… so, I can e…

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## [Creating a heatmap from corresponding points](https://discourse.slicer.org/t/creating-a-heatmap-from-corresponding-points/45397)

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**Author:** [@maas](https://discourse.slicer.org/u/maas)\
**Replies:** 1\
**Last updated:** [December 9, 2025, 2:20am UTC](https://discourse.slicer.org/t/creating-a-heatmap-from-corresponding-points/45397 "2025-12-09T02:20:02Z")

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Hallo! I’m trying to make a heatmap portraying the difference between a pre and post operation radius and ulna. I’ve managed to segment and overlay the bones. however I’m having issues creating the heatmap. When using t…

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## [Slicer ANTs Registration Failing](https://discourse.slicer.org/t/slicer-ants-registration-failing/45373)

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**Author:** [@ThomasVanParys](https://discourse.slicer.org/u/ThomasVanParys)\
**Replies:** 2\
**Last updated:** [December 8, 2025, 8:25pm UTC](https://discourse.slicer.org/t/slicer-ants-registration-failing/45373 "2025-12-08T20:25:43Z")

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Hello! I have tried to register two nrrd. volumes in ‘G:\\Kikopey\_project\\ANTs\_Volumes’ But I have come across this issue, and don’t fully undertsnad how to resolve it: Python 3.12.10 (main, Nov 10 2025, 02:47:38) \[MSC …

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## [New Feature: Independent Multi-Component Volume Rendering](https://discourse.slicer.org/t/new-feature-independent-multi-component-volume-rendering/45356)

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**Author:** [@Sunderlandkyl](https://discourse.slicer.org/u/Sunderlandkyl)\
**Replies:** 3\
**Last updated:** [December 8, 2025, 5:44pm UTC](https://discourse.slicer.org/t/new-feature-independent-multi-component-volume-rendering/45356 "2025-12-08T17:44:25Z")

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3D Slicer can now independently render each component of multi-component volumes (such as 3D color Doppler ultrasound or multispectral microscopy images) in 3D views. A new json-based file format is introduced to store t…

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## [Can not find 3DSlicer 5.9 version in preview releases, where is it available?](https://discourse.slicer.org/t/can-not-find-3dslicer-5-9-version-in-preview-releases-where-is-it-available/45242)

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**Author:** [@MaxVs](https://discourse.slicer.org/u/MaxVs)\
**Replies:** 3\
**Last updated:** [December 6, 2025, 6:35pm UTC](https://discourse.slicer.org/t/can-not-find-3dslicer-5-9-version-in-preview-releases-where-is-it-available/45242 "2025-12-06T18:35:23Z")

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I can not find 3DSlicer 5.9 version to download. Preview releases ends up on 5.8.1 version. There’s missing 5.9, where is it available? Thank you in advance.

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## [Extensions for stable are not building for macos](https://discourse.slicer.org/t/extensions-for-stable-are-not-building-for-macos/45381)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [December 6, 2025, 4:51am UTC](https://discourse.slicer.org/t/extensions-for-stable-are-not-building-for-macos/45381 "2025-12-06T04:51:42Z")

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No Mac extensions. Windows and Linux seems fine: @Sam\_Horvath @ebrahim

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## [How can I change HU values into normal range?](https://discourse.slicer.org/t/how-can-i-change-hu-values-into-normal-range/45379)

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**Author:** [@ChrisMak](https://discourse.slicer.org/u/ChrisMak)\
**Replies:** 3\
**Last updated:** [December 5, 2025, 8:00pm UTC](https://discourse.slicer.org/t/how-can-i-change-hu-values-into-normal-range/45379 "2025-12-05T20:00:43Z")

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So, I have a bunch of dental cbct’s that are way too dark to be useful. The source data came from transforming Viewer vol files into nhdr/nrrd, and I’m guessing all calibration (window/level) is gone (or I can’t find it…

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## [Split multiframe dicom to series dicom code problem](https://discourse.slicer.org/t/split-multiframe-dicom-to-series-dicom-code-problem/45374)

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**Author:** [@Berk\_Gezgin](https://discourse.slicer.org/u/Berk_Gezgin)\
**Replies:** 3\
**Last updated:** [December 5, 2025, 2:38pm UTC](https://discourse.slicer.org/t/split-multiframe-dicom-to-series-dicom-code-problem/45374 "2025-12-05T14:38:36Z")

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Hello I wrote the following code. My goal here is to slice a single DICOM file and establish a standard. However, the sliced DICOM does not appear the same as the original DICOM in the slicer program. The positions and …

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## [Please advise - Slicer wiped older dicoms/segmentations when editing other files ](https://discourse.slicer.org/t/please-advise-slicer-wiped-older-dicoms-segmentations-when-editing-other-files/45349)

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**Author:** [@Sus\_Mu](https://discourse.slicer.org/u/Sus_Mu)\
**Replies:** 3\
**Last updated:** [December 5, 2025, 12:05am UTC](https://discourse.slicer.org/t/please-advise-slicer-wiped-older-dicoms-segmentations-when-editing-other-files/45349 "2025-12-05T00:05:52Z")

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I am working on a project with batches of segmentations. Batch A (prepared in October) and Batch B (prepared in November) were saved on my computer, without meaningful backup through TimeMachine or iCloud. I also have a…

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## [Segmentation does not fit into new geometry](https://discourse.slicer.org/t/segmentation-does-not-fit-into-new-geometry/35691)

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**Author:** [@SHMMU](https://discourse.slicer.org/u/SHMMU)\
**Replies:** 5\
**Last updated:** [December 4, 2025, 10:31pm UTC](https://discourse.slicer.org/t/segmentation-does-not-fit-into-new-geometry/35691 "2025-12-04T22:31:08Z")

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I have used total segmentator to aquire liver volume. However, when I go to export the file as NIFTI I get this error message, “the current segmentation does not completely fit into the new geometry. Do you want to cr…

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## [Reload a python module that failed the initialize without restarting Slicer](https://discourse.slicer.org/t/reload-a-python-module-that-failed-the-initialize-without-restarting-slicer/45366)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [December 4, 2025, 5:14pm UTC](https://discourse.slicer.org/t/reload-a-python-module-that-failed-the-initialize-without-restarting-slicer/45366 "2025-12-04T17:14:47Z")

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Is there a way to reload a failed module without restarting the slicer? I can’t use the “Reload” button if the module hasn’t successfully initialized…

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## [Purchasing a new workstation - what to look for?](https://discourse.slicer.org/t/purchasing-a-new-workstation-what-to-look-for/1805)

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**Author:** [@losp](https://discourse.slicer.org/u/losp)\
**Replies:** 6\
**Last updated:** [December 4, 2025, 3:44am UTC](https://discourse.slicer.org/t/purchasing-a-new-workstation-what-to-look-for/1805 "2025-12-04T03:44:11Z")

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Hi, Hoping to pick some brains about workstation specs - I’m tasked with purchasing a new one for our lab. We’ll be working with large DICOM data sets (up 2 - 2.5GB). These are full-body scans and we’re planning to do l…

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