# Latest

**URL:** https://discourse.slicer.org/latest.md?page=44

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

**Page:** 45

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## [Hiding nodes from qMRMLSubjectHierarchyTreeView widget](https://discourse.slicer.org/t/hiding-nodes-from-qmrmlsubjecthierarchytreeview-widget/44019)

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**Author:** [@Victor\_Wayne](https://discourse.slicer.org/u/Victor_Wayne)\
**Replies:** 3\
**Last updated:** [August 13, 2025, 8:51am UTC](https://discourse.slicer.org/t/hiding-nodes-from-qmrmlsubjecthierarchytreeview-widget/44019 "2025-08-13T08:51:58Z")

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Hello, I inspected the Data module and found out that it is using qMRMLSubjectHierarchyTreeView widget for showing the nodes in a tree view. I wanted to customize the Data module by creating my own custom widget. So I c…

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## [\[DICOM to NRRD Converter\] A Python 3 - based script for converting DICOM to nrrd](https://discourse.slicer.org/t/dicom-to-nrrd-converter-a-python-3-based-script-for-converting-dicom-to-nrrd/44005)

<div class="topic-metadata">

**Author:** [@Unicom](https://discourse.slicer.org/u/Unicom)\
**Replies:** 7\
**Last updated:** [August 13, 2025, 3:20am UTC](https://discourse.slicer.org/t/dicom-to-nrrd-converter-a-python-3-based-script-for-converting-dicom-to-nrrd/44005 "2025-08-13T03:20:12Z")

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\[DICOM to NRRD Converter\] A Python 3 - based script for converting DICOM to nrrd Currently, there are no very good methods or extensions available for efficient loading of large-size DICOM data. Spending some time conver…

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## [Endocast from STL](https://discourse.slicer.org/t/endocast-from-stl/43450)

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**Author:** [@Samino](https://discourse.slicer.org/u/Samino)\
**Replies:** 7\
**Last updated:** [August 12, 2025, 12:35pm UTC](https://discourse.slicer.org/t/endocast-from-stl/43450 "2025-08-12T12:35:11Z")

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Hi Is there a way I can generate an endocast from an STL file? The cavity I want to use for generating the endocast has external openings. Any help would be highly appreciated! TIA

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## [Wrap Solidify Too Smooth - Troubleshooting help](https://discourse.slicer.org/t/wrap-solidify-too-smooth-troubleshooting-help/44048)

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**Author:** [@PitaChib](https://discourse.slicer.org/u/PitaChib)\
**Replies:** 2\
**Last updated:** [August 11, 2025, 8:24pm UTC](https://discourse.slicer.org/t/wrap-solidify-too-smooth-troubleshooting-help/44048 "2025-08-11T20:24:11Z")

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I work with extracting endocasts from skull ct scans. I have a protocol I follow that basically use wrap solidify with split cavities at 1mm. I pretty much do this every time with slight fluctuation with the split cavity…

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## [Any help to do simple tractography by simple easy steps?@](https://discourse.slicer.org/t/any-help-to-do-simple-tractography-by-simple-easy-steps/44036)

<div class="topic-metadata">

**Author:** [@ahmad\_elgamal](https://discourse.slicer.org/u/ahmad_elgamal)\
**Replies:** 5\
**Last updated:** [August 11, 2025, 7:23pm UTC](https://discourse.slicer.org/t/any-help-to-do-simple-tractography-by-simple-easy-steps/44036 "2025-08-11T19:23:58Z")

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Any help to do simple tractography by simple easy steps?@

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## [Unknown Transformation - Canon 3D Ultrasound](https://discourse.slicer.org/t/unknown-transformation-canon-3d-ultrasound/44046)

<div class="topic-metadata">

**Author:** [@Adam\_Mcarthur](https://discourse.slicer.org/u/Adam_Mcarthur)\
**Replies:** 1\
**Last updated:** [August 11, 2025, 6:09pm UTC](https://discourse.slicer.org/t/unknown-transformation-canon-3d-ultrasound/44046 "2025-08-11T18:09:40Z")

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Hey Folks, I am trying to get the 3D Volume from proprietary Canon 3D Ultrasounds. I have made a lot of progress, using a custom version of RawImageGuess. I have got pretty far, but am stuck with this specific problem: …

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## [Abnormal stomach or reconstruction error in the total segmentation extension?](https://discourse.slicer.org/t/abnormal-stomach-or-reconstruction-error-in-the-total-segmentation-extension/44045)

<div class="topic-metadata">

**Author:** [@Benny\_Zamir](https://discourse.slicer.org/u/Benny_Zamir)\
**Replies:** 0\
**Last updated:** [August 11, 2025, 3:07pm UTC](https://discourse.slicer.org/t/abnormal-stomach-or-reconstruction-error-in-the-total-segmentation-extension/44045 "2025-08-11T15:07:40Z")

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hi I would like to know if the stomach reconstruction is good or bad, cause the stomach structure is abnormal?

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## [DICOM Image Spacing Issue at Z](https://discourse.slicer.org/t/dicom-image-spacing-issue-at-z/44025)

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**Author:** [@txuh](https://discourse.slicer.org/u/txuh)\
**Replies:** 6\
**Last updated:** [August 11, 2025, 2:02pm UTC](https://discourse.slicer.org/t/dicom-image-spacing-issue-at-z/44025 "2025-08-11T14:02:14Z")

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I am writing a single DICOM with multiple frames. After loading the dcm file via 3D Slicer (volume), the x/y image spacing is correct which I set the value (0.0195) at tag “0028,0030” (Pixel Spacing). However, the imag…

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## [Issue hiding shapeNodes in a folder via script](https://discourse.slicer.org/t/issue-hiding-shapenodes-in-a-folder-via-script/44023)

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**Author:** [@bserrano](https://discourse.slicer.org/u/bserrano)\
**Replies:** 8\
**Last updated:** [August 11, 2025, 1:27pm UTC](https://discourse.slicer.org/t/issue-hiding-shapenodes-in-a-folder-via-script/44023 "2025-08-11T13:27:44Z")

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Hi all, I’m working with a script that generates several shape nodes, grouped inside a folder. At a certain point in the execution, I want to hide all cylinders in that folder. I’m using the same code that works fine w…

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## [2025.08.05 Weekly Meeting](https://discourse.slicer.org/t/2025-08-05-weekly-meeting/43957)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 4\
**Last updated:** [August 11, 2025, 12:57pm UTC](https://discourse.slicer.org/t/2025-08-05-weekly-meeting/43957 "2025-08-11T12:57:11Z")

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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: Next release (proposal) Iden…

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## [How to read .bimg file format?](https://discourse.slicer.org/t/how-to-read-bimg-file-format/17931)

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**Author:** [@sulaimanvesal](https://discourse.slicer.org/u/sulaimanvesal)\
**Replies:** 5\
**Last updated:** [August 11, 2025, 11:52am UTC](https://discourse.slicer.org/t/how-to-read-bimg-file-format/17931 "2025-08-11T11:52:36Z")

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Hi, I wanted to ask, if we can read .bimg file format in 3D slicer! I have received some raw ultrasound data stored in \*.bimg file format (I think, it’s a video frames). However, I looked all over the net to find some …

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## [How to save slicer scene with both slicer data and with "self.variables" within custom widget](https://discourse.slicer.org/t/how-to-save-slicer-scene-with-both-slicer-data-and-with-self-variables-within-custom-widget/9830)

<div class="topic-metadata">

**Author:** [@jdp](https://discourse.slicer.org/u/jdp)\
**Replies:** 19\
**Last updated:** [August 11, 2025, 9:06am UTC](https://discourse.slicer.org/t/how-to-save-slicer-scene-with-both-slicer-data-and-with-self-variables-within-custom-widget/9830 "2025-08-11T09:06:08Z")

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I am using Slicer to create a widget for an application in which I would like to save my work. I see in slicer there is saveScene() in which I can do an mrml or a mrb file - which I can get to work. However, the widget a…

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## [Paint doesnt work. Just disappears from the region I paint.](https://discourse.slicer.org/t/paint-doesnt-work-just-disappears-from-the-region-i-paint/44009)

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**Author:** [@Ramya](https://discourse.slicer.org/u/Ramya)\
**Replies:** 3\
**Last updated:** [August 11, 2025, 6:36am UTC](https://discourse.slicer.org/t/paint-doesnt-work-just-disappears-from-the-region-i-paint/44009 "2025-08-11T06:36:51Z")

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Hi I am new to 3D slicer, I am trying to paint on my CT scan to do a segmentation. After I select the region to paint it doesn’t stay. May I know how to fix this issue.

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## [CDash build error: JSON not found](https://discourse.slicer.org/t/cdash-build-error-json-not-found/40241)

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**Author:** [@acsenrafilho](https://discourse.slicer.org/u/acsenrafilho)\
**Replies:** 6\
**Last updated:** [August 9, 2025, 9:40pm UTC](https://discourse.slicer.org/t/cdash-build-error-json-not-found/40241 "2025-08-09T21:40:22Z")

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Hi Slicers, I have uploaded some projects to the Slicer Extension Index. Some of them presented the following build error: error: EXTENSION\_FILE CMake variable points to a inexistent file or directory: /.../SlicerDTI…

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## [Latest slicer preview (r33816) does not launch in macos](https://discourse.slicer.org/t/latest-slicer-preview-r33816-does-not-launch-in-macos/43935)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 13\
**Last updated:** [August 9, 2025, 8:28pm UTC](https://discourse.slicer.org/t/latest-slicer-preview-r33816-does-not-launch-in-macos/43935 "2025-08-09T20:28:47Z")

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Tested on two different macs (imac and macbook pro) with Sequoia 15.5. After entering the security exception, Slicer icon continues to bounce for about a minute and then quits. When launched from the terminal window from…

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## [surfaceMarkups extension is failing to build on Preview](https://discourse.slicer.org/t/surfacemarkups-extension-is-failing-to-build-on-preview/44011)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [August 9, 2025, 8:28pm UTC](https://discourse.slicer.org/t/surfacemarkups-extension-is-failing-to-build-on-preview/44011 "2025-08-09T20:28:25Z")

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Seems across all the platforms. We do rely on that for a functionality in SlicerMorph, so I wanted to see if this is related to latest python changes. @cpinter

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## [TotalSegmentator error: \`returned non-zero exit status 1\`](https://discourse.slicer.org/t/totalsegmentator-error-returned-non-zero-exit-status-1/43932)

<div class="topic-metadata">

**Author:** [@era\_888](https://discourse.slicer.org/u/era_888)\
**Replies:** 3\
**Last updated:** [August 9, 2025, 7:40pm UTC](https://discourse.slicer.org/t/totalsegmentator-error-returned-non-zero-exit-status-1/43932 "2025-08-09T19:40:29Z")

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Failed to compute results. Command ‘\[‘E:/Slicer 5.8.1/bin/../bin\\PythonSlicer.EXE’, ‘E:\\Slicer 5.8.1\\lib\\Python\\Scripts\\TotalSegmentator.exe’, ‘-i’, ‘C:/Users/msi/AppData/Local/Temp/Slicer/\_\_SlicerTemp\_\_2025-08-01\_17+24…

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## [Inverse ROI volume crop](https://discourse.slicer.org/t/inverse-roi-volume-crop/44032)

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**Author:** [@JaredAmudeo](https://discourse.slicer.org/u/JaredAmudeo)\
**Replies:** 1\
**Last updated:** [August 9, 2025, 4:39pm UTC](https://discourse.slicer.org/t/inverse-roi-volume-crop/44032 "2025-08-09T16:39:44Z")

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Hi! Is there a simple way to do a volume crop that selects everything outside the ROI, basically erasing everything inside?

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## [Transparent background in screen capture module](https://discourse.slicer.org/t/transparent-background-in-screen-capture-module/44013)

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**Author:** [@JaredAmudeo](https://discourse.slicer.org/u/JaredAmudeo)\
**Replies:** 2\
**Last updated:** [August 9, 2025, 9:08am UTC](https://discourse.slicer.org/t/transparent-background-in-screen-capture-module/44013 "2025-08-09T09:08:05Z")

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Hi! Could someone help me? I’m trying to make a simple rotation video in 3D view, but no matter what background color or video format I choose, the video appears with a background, not the transparent background as ma…

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## [Can SlicerIGT Fiducial Registration Wizard use global coordinates instead of RAS?](https://discourse.slicer.org/t/can-slicerigt-fiducial-registration-wizard-use-global-coordinates-instead-of-ras/44007)

<div class="topic-metadata">

**Author:** [@Noam\_Borenstein](https://discourse.slicer.org/u/Noam_Borenstein)\
**Replies:** 3\
**Last updated:** [August 8, 2025, 8:49pm UTC](https://discourse.slicer.org/t/can-slicerigt-fiducial-registration-wizard-use-global-coordinates-instead-of-ras/44007 "2025-08-08T20:49:28Z")

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Hi everyone! I am working with a tracked knee model using an NDI camera. I am trying to find the transform between two sets of moving point lists using the fiducial registration wizard. If I move a point in the local/RA…

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## [Slicer ignoring command line path with accents](https://discourse.slicer.org/t/slicer-ignoring-command-line-path-with-accents/24569)

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**Author:** [@Ale](https://discourse.slicer.org/u/Ale)\
**Replies:** 2\
**Last updated:** [August 8, 2025, 6:17pm UTC](https://discourse.slicer.org/t/slicer-ignoring-command-line-path-with-accents/24569 "2025-08-08T18:17:10Z")

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Hi all, I’m getting this error when trying to load a file in command line: Slicer /home/mark/Docs/GMM\_Cráneos\_Armadillos/Models/cvi\_24.ply Then, the error below shows strange characters where the “á” was in the path. …

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## [VMTK, Centerline Extraction](https://discourse.slicer.org/t/vmtk-centerline-extraction/44027)

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**Author:** [@Paria.M](https://discourse.slicer.org/u/Paria.M)\
**Replies:** 3\
**Last updated:** [August 8, 2025, 5:05pm UTC](https://discourse.slicer.org/t/vmtk-centerline-extraction/44027 "2025-08-08T17:05:53Z")

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Hi everyone, I want to extract the centerline using VMTK. When I select the Endpoints, the extracted centerline does not cross the points properly, and its far from the Endpoints! Can anyone help me to see what is the p…

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## [Error while installing pytorch](https://discourse.slicer.org/t/error-while-installing-pytorch/26956)

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**Author:** [@Anish\_Raj](https://discourse.slicer.org/u/Anish_Raj)\
**Replies:** 22\
**Last updated:** [August 8, 2025, 3:21pm UTC](https://discourse.slicer.org/t/error-while-installing-pytorch/26956 "2025-08-08T15:21:15Z")

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Hii, I am having trouble applying the module in slicer 5.2.1. When i press apply, it says pytorch will be installed using light-the-torch. After few seconds, i get the error: failed to compute results, no module named t…

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## [Is there a way to use Slicer Virtual Reality with standalone VR headsets like the Magic Leap 2 or Lynx R1?](https://discourse.slicer.org/t/is-there-a-way-to-use-slicer-virtual-reality-with-standalone-vr-headsets-like-the-magic-leap-2-or-lynx-r1/44026)

<div class="topic-metadata">

**Author:** [@tech\_curious](https://discourse.slicer.org/u/tech_curious)\
**Replies:** 0\
**Last updated:** [August 8, 2025, 3:11pm UTC](https://discourse.slicer.org/t/is-there-a-way-to-use-slicer-virtual-reality-with-standalone-vr-headsets-like-the-magic-leap-2-or-lynx-r1/44026 "2025-08-08T15:11:28Z")

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I’m exploring ways to visualize 3D Slicer models in AR using either the Magic Leap 2 or Lynx R1, but I’m unsure about compatibility as they both support OpenXR but with the runtime locally on the device. Is it possible t…

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## [Compare 2 models](https://discourse.slicer.org/t/compare-2-models/44014)

<div class="topic-metadata">

**Author:** [@michaelli](https://discourse.slicer.org/u/michaelli)\
**Replies:** 4\
**Last updated:** [August 8, 2025, 2:14am UTC](https://discourse.slicer.org/t/compare-2-models/44014 "2025-08-08T02:14:46Z")

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I want to compare two models in two 3D views, so that I can rotate the camera independently for each 3D view. But all the models show in all views, how can I load the first model into the first 3d view window and the se…

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## [Using Slicer and 3d printing to support patient advocacy](https://discourse.slicer.org/t/using-slicer-and-3d-printing-to-support-patient-advocacy/44016)

<div class="topic-metadata">

**Author:** [@GeneRisi](https://discourse.slicer.org/u/GeneRisi)\
**Replies:** 0\
**Last updated:** [August 7, 2025, 11:22pm UTC](https://discourse.slicer.org/t/using-slicer-and-3d-printing-to-support-patient-advocacy/44016 "2025-08-07T23:22:43Z")

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I am not a researcher. I am a retired Engineer and used Slicer3D to process a series of CT scans related to a traumatic brain injury and the subsequent cranial surgeries (removal of temporal bone flap, re-attachment of t…

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## [Margin Tool Erases Segmentation](https://discourse.slicer.org/t/margin-tool-erases-segmentation/43973)

<div class="topic-metadata">

**Author:** [@jr2637](https://discourse.slicer.org/u/jr2637)\
**Replies:** 4\
**Last updated:** [August 7, 2025, 3:36pm UTC](https://discourse.slicer.org/t/margin-tool-erases-segmentation/43973 "2025-08-07T15:36:07Z")

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Hi, I am trying to grow my segment using the margin tool, but when I attempt to do so, the segment erases. How can I fix this? Thank you!

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## [How to build only a loadable module](https://discourse.slicer.org/t/how-to-build-only-a-loadable-module/43996)

<div class="topic-metadata">

**Author:** [@koeglfryderyk](https://discourse.slicer.org/u/koeglfryderyk)\
**Replies:** 1\
**Last updated:** [August 7, 2025, 2:34pm UTC](https://discourse.slicer.org/t/how-to-build-only-a-loadable-module/43996 "2025-08-07T14:34:37Z")

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I’m working on the Transforms loadable module on Ubuntu. Is there a way to only re-build this module without re-building all of Slicer?

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## [SlicerRT built from source cannot start](https://discourse.slicer.org/t/slicerrt-built-from-source-cannot-start/43792)

<div class="topic-metadata">

**Author:** [@ferhue](https://discourse.slicer.org/u/ferhue)\
**Replies:** 42\
**Last updated:** [August 7, 2025, 2:06pm UTC](https://discourse.slicer.org/t/slicerrt-built-from-source-cannot-start/43792 "2025-08-07T14:06:57Z")

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I’ve built Slicer and then SlicerRT from source several times in the past. I followed the online instructions. In the same computer, I recently updated (via git pull) the Slicer and SlicerRT repositories to master, and …

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## [WebAssembly version](https://discourse.slicer.org/t/webassembly-version/43997)

<div class="topic-metadata">

**Author:** [@Taron\_Holikyan](https://discourse.slicer.org/u/Taron_Holikyan)\
**Replies:** 1\
**Last updated:** [August 7, 2025, 12:37pm UTC](https://discourse.slicer.org/t/webassembly-version/43997 "2025-08-07T12:37:53Z")

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Hi, I want to know if this library has a WebAssembly version that works with Three.js. If not, would I need to create it myself? And if a WebAssembly version doesn’t exist, how difficult would it be to make one?

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