# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=183

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

**Page:** 184

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## [Mergered models comes out empty](https://discourse.slicer.org/t/mergered-models-comes-out-empty/27415)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 0\
**Last updated:** [January 23, 2023, 10:01am UTC](https://discourse.slicer.org/t/mergered-models-comes-out-empty/27415 "2023-01-23T10:01:17Z")

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im trying to merge two models . i tried merge models module and append in dynamic models models . both make a model which is empty . it shows nothing and export nothing . any suggestions ? thanks

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## [Local Threshold --\> restrict threshold operation to user-defined 3D region --\> how to?](https://discourse.slicer.org/t/local-threshold-restrict-threshold-operation-to-user-defined-3d-region-how-to/27413)

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**Author:** [@MrMarkus](https://discourse.slicer.org/u/MrMarkus)\
**Replies:** 1\
**Last updated:** [January 23, 2023, 9:26am UTC](https://discourse.slicer.org/t/local-threshold-restrict-threshold-operation-to-user-defined-3d-region-how-to/27413 "2023-01-23T09:26:23Z")

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Operating system: Win10 Slicer version: 5.2.1 r31317 / 77da381 Hi, maybe you could help me out here: I am using “Local Threshold” and the region which should be segmented is further defined by the option “ROI” → Vol…

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## [Import position data (tracking) for images](https://discourse.slicer.org/t/import-position-data-tracking-for-images/19615)

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**Author:** [@megt](https://discourse.slicer.org/u/megt)\
**Replies:** 3\
**Last updated:** [January 23, 2023, 6:59am UTC](https://discourse.slicer.org/t/import-position-data-tracking-for-images/19615 "2023-01-23T06:59:22Z")

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Hi everybody, I am Matthieu working on a 3D free-hand project involving ultrasound imaging and electromagnetic device. I am interested to use 3D Slicer for volume visualization instead of Matlab. I am also thinking tha…

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## [Problem that 'Auto Segmentation' option deactivates when I ran monaibundle apps based on MONAI Label server of 3D-Slicer](https://discourse.slicer.org/t/problem-that-auto-segmentation-option-deactivates-when-i-ran-monaibundle-apps-based-on-monai-label-server-of-3d-slicer/26317)

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**Author:** [@platanus](https://discourse.slicer.org/u/platanus)\
**Replies:** 3\
**Last updated:** [January 22, 2023, 8:10pm UTC](https://discourse.slicer.org/t/problem-that-auto-segmentation-option-deactivates-when-i-ran-monaibundle-apps-based-on-monai-label-server-of-3d-slicer/26317 "2023-01-22T20:10:39Z")

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Dear 3D-Slicer developers I’m running ‘\[brats\_mri\_segmentation\_v0.3.3\] (Releases · Project-MONAI/model-zoo · GitHub)’ using monaibundle apps in 3D-Slicer. I captured work scene of monaibundle apps based on MONAI Label …

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## [Error message during data of DICOM file import ](https://discourse.slicer.org/t/error-message-during-data-of-dicom-file-import/27387)

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**Author:** [@pbs543210](https://discourse.slicer.org/u/pbs543210)\
**Replies:** 2\
**Last updated:** [January 22, 2023, 7:58pm UTC](https://discourse.slicer.org/t/error-message-during-data-of-dicom-file-import/27387 "2023-01-22T19:58:30Z")

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Hello all, I am a beginner of SlicerDMRI S/W and having some difficulties with DICOM data import. When I tried to import DICOM data (.dcm files) using DWIConvert option, I got an error message of below, " Diffusion-w…

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## [Zoom and translation failure](https://discourse.slicer.org/t/zoom-and-translation-failure/27403)

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**Author:** [@philippepellerin](https://discourse.slicer.org/u/philippepellerin)\
**Replies:** 0\
**Last updated:** [January 22, 2023, 3:39pm UTC](https://discourse.slicer.org/t/zoom-and-translation-failure/27403 "2023-01-22T15:39:23Z")

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Operating system:Mac OS Mojave Slicer version:5.3.0.2023.01.13 Expected behavior: Actual behavior: After a time working with segmentation, the zoom function (left clic-moving the mouse up and down) and the translation…

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## [BoneReconstructionPlanner not generating bone models/cutting guides](https://discourse.slicer.org/t/bonereconstructionplanner-not-generating-bone-models-cutting-guides/27188)

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**Author:** [@R\_Nara](https://discourse.slicer.org/u/R_Nara)\
**Replies:** 18\
**Last updated:** [January 22, 2023, 10:53am UTC](https://discourse.slicer.org/t/bonereconstructionplanner-not-generating-bone-models-cutting-guides/27188 "2023-01-22T10:53:42Z")

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Dear Sir, I’m trying to plan a case of mandibular reconstruction using BoneReconstructionPlanner, but i’m stuck at one step, “create bone models from segmentations” doesn’t do anything and returns empty bone models, hen…

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## [SimpleMarkupsWidget is missing features](https://discourse.slicer.org/t/simplemarkupswidget-is-missing-features/24056)

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**Author:** [@koeglfryderyk](https://discourse.slicer.org/u/koeglfryderyk)\
**Replies:** 3\
**Last updated:** [January 20, 2023, 8:17pm UTC](https://discourse.slicer.org/t/simplemarkupswidget-is-missing-features/24056 "2023-01-20T20:17:31Z")

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I have a SimpleMarkupsWidget in my Python Scripted module, that looks like this: However, this widget is missing certain features that are important to me, in contrast to the Control Points menu in the Markups module…

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## [MarkupsLine not showing length measurement?](https://discourse.slicer.org/t/markupsline-not-showing-length-measurement/27365)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 2\
**Last updated:** [January 20, 2023, 5:48pm UTC](https://discourse.slicer.org/t/markupsline-not-showing-length-measurement/27365 "2023-01-20T17:48:22Z")

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In previous versions of Slicer, the length measurement was shown on the 3D view, but for some reason it doesn’t seem to be working for me now. I have a MarkupsLine node with two control points, but the length measuremen…

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## [badly loaded ct scans](https://discourse.slicer.org/t/badly-loaded-ct-scans/27358)

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**Author:** [@pawel](https://discourse.slicer.org/u/pawel)\
**Replies:** 8\
**Last updated:** [January 20, 2023, 1:10pm UTC](https://discourse.slicer.org/t/badly-loaded-ct-scans/27358 "2023-01-20T13:10:39Z")

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Hello I have a problem with loaded ct scans. In te red window ct scany are properly visible but in green an yellow view ct scan are stretched or narrowed. I send screen with my problem. Best, Pawel

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## [New Dynamic Modeler tools: Hollow, Margin, ROI cut](https://discourse.slicer.org/t/new-dynamic-modeler-tools-hollow-margin-roi-cut/24422)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 5\
**Last updated:** [January 20, 2023, 12:53pm UTC](https://discourse.slicer.org/t/new-dynamic-modeler-tools-hollow-margin-roi-cut/24422 "2023-01-20T12:53:19Z")

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Dynamic Modeler module allows parametric editing of models. In this post we present three new tools have been added to this module some time ago (by @Sunderlandkyl and @lassoan) but they have not been announced yet. Hol…

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## [NifTI to color DICOM series](https://discourse.slicer.org/t/nifti-to-color-dicom-series/27373)

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**Author:** [@smcch](https://discourse.slicer.org/u/smcch)\
**Replies:** 0\
**Last updated:** [January 20, 2023, 10:00am UTC](https://discourse.slicer.org/t/nifti-to-color-dicom-series/27373 "2023-01-20T10:00:38Z")

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Hello! I’m trying to convert a NifTI volume (T1w fused with a color mask) into a color DICOM series. But, after using the “export” function, I got only a greyscale DICOM series. Can anybody help me? Thanks.

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## [Extensions not showing anything](https://discourse.slicer.org/t/extensions-not-showing-anything/23432)

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**Author:** [@sodium83](https://discourse.slicer.org/u/sodium83)\
**Replies:** 7\
**Last updated:** [January 20, 2023, 5:49am UTC](https://discourse.slicer.org/t/extensions-not-showing-anything/23432 "2023-01-20T05:49:22Z")

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Using Ubuntu 22.04 and Slicer 4.11.20210226. Also tried on the preview release. Loading Extensions Manager shows 100% at bottom but nothing appears. I am just using this on a home computer with no firewalls etc. My inte…

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## [How to color a stl file using VTK in python](https://discourse.slicer.org/t/how-to-color-a-stl-file-using-vtk-in-python/26334)

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**Author:** [@Hamid\_Fsian](https://discourse.slicer.org/u/Hamid_Fsian)\
**Replies:** 3\
**Last updated:** [January 20, 2023, 5:28am UTC](https://discourse.slicer.org/t/how-to-color-a-stl-file-using-vtk-in-python/26334 "2023-01-20T05:28:08Z")

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Hello, I am a newbie in VTK. I have generated a STL file (of bones) using VTK, and now I want to have specific color labels for each slice, for example : if the width of slice(n) \> N (number) =\> green, if width o…

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## [4D Animation from Multivolume](https://discourse.slicer.org/t/4d-animation-from-multivolume/27367)

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**Author:** [@Fluvio\_Lobo](https://discourse.slicer.org/u/Fluvio_Lobo)\
**Replies:** 0\
**Last updated:** [January 20, 2023, 3:37am UTC](https://discourse.slicer.org/t/4d-animation-from-multivolume/27367 "2023-01-20T03:37:14Z")

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Hello, I created an animation from an MRI sequence following this youtube tutorial. Here is what I get: How do I improve the registration? Can I segment additional frames? Thank you!

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## [Load Directory Leaves Off a File](https://discourse.slicer.org/t/load-directory-leaves-off-a-file/27356)

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**Author:** [@rhodesdante](https://discourse.slicer.org/u/rhodesdante)\
**Replies:** 5\
**Last updated:** [January 19, 2023, 9:34pm UTC](https://discourse.slicer.org/t/load-directory-leaves-off-a-file/27356 "2023-01-19T21:34:43Z")

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I was trying to use the Add Data → Choose Directory to Add button to load in some .nrrd files, but every time I try this, the loader always misses a single file. I checked the log, and it gives the error “There is…

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## [Removing the 4th dimension from NRRD file](https://discourse.slicer.org/t/removing-the-4th-dimension-from-nrrd-file/27362)

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**Author:** [@Senn81](https://discourse.slicer.org/u/Senn81)\
**Replies:** 2\
**Last updated:** [January 19, 2023, 6:58pm UTC](https://discourse.slicer.org/t/removing-the-4th-dimension-from-nrrd-file/27362 "2023-01-19T18:58:14Z")

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Hi Slicer support In some of my segmentations my NRRD files have an extra dimension (4th dimension). This has caused issues with compatibility with certain software loading the file up. Would anyone know how to remove t…

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## [When loading a DICOMRT file from MIM into 3DSlicer, there is a strange slit that appears. ](https://discourse.slicer.org/t/when-loading-a-dicomrt-file-from-mim-into-3dslicer-there-is-a-strange-slit-that-appears/27361)

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**Author:** [@rickyman12](https://discourse.slicer.org/u/rickyman12)\
**Replies:** 1\
**Last updated:** [January 19, 2023, 6:14pm UTC](https://discourse.slicer.org/t/when-loading-a-dicomrt-file-from-mim-into-3dslicer-there-is-a-strange-slit-that-appears/27361 "2023-01-19T18:14:43Z")

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We exported a DICOM-RT file from MIM into 3DSlicer. The segmentation displays well on 2D View. In 3D render it shows as having 2 slits, which do not appear on 3D surface view in MIM. Wondering why this happens and if the…

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## [Can we upload more than 50 nifti files at a time with a link or can we upload a folder of these much nifti files through script in 3d slicer?](https://discourse.slicer.org/t/can-we-upload-more-than-50-nifti-files-at-a-time-with-a-link-or-can-we-upload-a-folder-of-these-much-nifti-files-through-script-in-3d-slicer/27359)

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**Author:** [@kmordhwaj](https://discourse.slicer.org/u/kmordhwaj)\
**Replies:** 0\
**Last updated:** [January 19, 2023, 6:01pm UTC](https://discourse.slicer.org/t/can-we-upload-more-than-50-nifti-files-at-a-time-with-a-link-or-can-we-upload-a-folder-of-these-much-nifti-files-through-script-in-3d-slicer/27359 "2023-01-19T18:01:50Z")

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Can we upload more than 50 nifti files at a time with a link or can we upload a folder

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## [Problem in Extensions Manager](https://discourse.slicer.org/t/problem-in-extensions-manager/27354)

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**Author:** [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Replies:** 1\
**Last updated:** [January 19, 2023, 4:53pm UTC](https://discourse.slicer.org/t/problem-in-extensions-manager/27354 "2023-01-19T16:53:48Z")

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I installed 3D Slicer 5.2.1 in Ubuntu 22.04.1 LTS. Why don’t I see any extension to install in the Extension Manager?

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## [Fill inside a closed curve](https://discourse.slicer.org/t/fill-inside-a-closed-curve/27335)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [January 19, 2023, 4:36pm UTC](https://discourse.slicer.org/t/fill-inside-a-closed-curve/27335 "2023-01-19T16:36:37Z")

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When creating anatomical teaching materials, it would be nice to highlight different structures with different colors. Obviously this is best done with segmentation, but that’s quite a lot of work; especially when all yo…

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## [Options for AI Segmentation of MRI Scans](https://discourse.slicer.org/t/options-for-ai-segmentation-of-mri-scans/27219)

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**Author:** [@JacobD](https://discourse.slicer.org/u/JacobD)\
**Replies:** 7\
**Last updated:** [January 19, 2023, 3:11pm UTC](https://discourse.slicer.org/t/options-for-ai-segmentation-of-mri-scans/27219 "2023-01-19T15:11:58Z")

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Hello, I am looking to learn about tools or extensions that are available to assist with the automatic segmentation of a shoulder MRI using AI. Using a specific scanning sequence, multiple reconstructions of the bones o…

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## [Merge 2 segments](https://discourse.slicer.org/t/merge-2-segments/7702)

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**Author:** [@Jmarcs](https://discourse.slicer.org/u/Jmarcs)\
**Replies:** 4\
**Last updated:** [January 19, 2023, 12:11pm UTC](https://discourse.slicer.org/t/merge-2-segments/7702 "2023-01-19T12:11:53Z")

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I msorry about my ridiculous request but how can I merge 2 segments in ONE segment best regards jean-marc

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## [Local threshold](https://discourse.slicer.org/t/local-threshold/26461)

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**Author:** [@Mohamad\_Saadi](https://discourse.slicer.org/u/Mohamad_Saadi)\
**Replies:** 2\
**Last updated:** [January 18, 2023, 8:02pm UTC](https://discourse.slicer.org/t/local-threshold/26461 "2023-01-18T20:02:15Z")

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Hi, I downloaded version 5.0.3 and I can’t seem to find Local Threshold in extensions. how can I fix this problem? can I model the aorta using defferent methods?

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## [Trying to understand the different coordinate systems](https://discourse.slicer.org/t/trying-to-understand-the-different-coordinate-systems/27332)

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**Author:** [@spodamon](https://discourse.slicer.org/u/spodamon)\
**Replies:** 0\
**Last updated:** [January 18, 2023, 7:04pm UTC](https://discourse.slicer.org/t/trying-to-understand-the-different-coordinate-systems/27332 "2023-01-18T19:04:41Z")

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I am trying to make a bounding box based on a segmentation. I initially tried using SimpleITK and their LabelShapeStatisticsImageFilter class and their GetBoundingBox method to get some coordinates. When I tried doing th…

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## [Using module pynrrd in creation of extension](https://discourse.slicer.org/t/using-module-pynrrd-in-creation-of-extension/27330)

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**Author:** [@devD](https://discourse.slicer.org/u/devD)\
**Replies:** 1\
**Last updated:** [January 18, 2023, 6:30pm UTC](https://discourse.slicer.org/t/using-module-pynrrd-in-creation-of-extension/27330 "2023-01-18T18:30:27Z")

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Hi, I am currently creating an extension for Slicer that uses the model nrrd from pynrrd. However i get the error: ModuleNotFoundError: No module named ‘nrrd’ (I installed pynrrd by using “pip install pynrrd”) What c…

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## [how can we integrate hololense2 to slicer](https://discourse.slicer.org/t/how-can-we-integrate-hololense2-to-slicer/27329)

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**Author:** [@T\_Gulhane](https://discourse.slicer.org/u/T_Gulhane)\
**Replies:** 0\
**Last updated:** [January 18, 2023, 5:42pm UTC](https://discourse.slicer.org/t/how-can-we-integrate-hololense2-to-slicer/27329 "2023-01-18T17:42:52Z")

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here I have been trying to figure out the solution of integrating hololense2 to slicer. if there is an any solution will be much helpful.

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## [Get path node (file path directory)](https://discourse.slicer.org/t/get-path-node-file-path-directory/27325)

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**Author:** [@lucas\_sd](https://discourse.slicer.org/u/lucas_sd)\
**Replies:** 2\
**Last updated:** [January 18, 2023, 2:54pm UTC](https://discourse.slicer.org/t/get-path-node-file-path-directory/27325 "2023-01-18T14:54:36Z")

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Hi everybody, Im working in a module, and I need to save the path directory of a node. I would like to know if there is a command to get this (like getdirofnode, obtain something like ‘/User/data/etc/’, and save it lik…

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## [How to connect Slicer view with Hololens？](https://discourse.slicer.org/t/how-to-connect-slicer-view-with-hololens/20887)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 6\
**Last updated:** [January 18, 2023, 6:49am UTC](https://discourse.slicer.org/t/how-to-connect-slicer-view-with-hololens/20887 "2023-01-18T06:49:09Z")

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Maybe this is not a new topic. Now if I use hololens device ,I have to develop different apps with Unity, but it is hard for me to learn Unity. Anyway or app can help connect Slicer 3D or 2D view with Hololens？

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## [converting .stl to .nrrd](https://discourse.slicer.org/t/converting-stl-to-nrrd/3726)

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**Author:** [@mikayle](https://discourse.slicer.org/u/mikayle)\
**Replies:** 2\
**Last updated:** [January 17, 2023, 10:09pm UTC](https://discourse.slicer.org/t/converting-stl-to-nrrd/3726 "2023-01-17T22:09:29Z")

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Is there a way to convert my .stl to a .nrrd? I am able to import my stl into Slicer through Import\>Models which supposedly creates a Segmentation (though nothing appears on the screen) and then my export segmentation o…

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